Introduction
Sustainable aspects of agriculture are widely discussed topics in global forums today. United Nations General Assembly (2012) recognizes sustainability aspects of agriculture with more focus on ecological and social factors, including food security needs. Also, the United Nations Department of Economic and Social Affairs for Sustainable Development (2021) reemphasizes this unprecedented need for food and agriculture sustainability for the 21st century. The Sri Lankan government also realizes the timely need to implement measures to transition agriculture to a more sustainable aspect, focusing on rice cultivation. Even though the government tried to transition agriculture into more organic-centric, it failed. Banning chemical fertilizer is a massive social, economic, and political failure in the country. This failure shows that Sri Lankan farmers’ potential for Sustainable Agriculture (SA) appears not appropriately known by policymakers.
The principles of sustainable agriculture and its importance have become increasingly discussed in economic, political, and academic domains in many parts of the world over the last decades. Lichtfouse et al., 2009 suggest the SA addresses the world’s food-securing needs for the ever-rising population while preserving resources for future generations. Conway & Barbier, 1990; Ackerman et al., 2014; Scherer et al., 2018) define sustainable agriculture as a dynamic and complex ecosystem that can fulfil the food needs within acceptable social, economic, and environmental costs and be resilient to environmental and economic changes. UN General Assembly (2012) recognized the diversity of agricultural systems and processes in the emergence of growing food demands for the world’s rising population. United Nations passed a global resolution to promote SA production and productivity, mainly focusing on developing countries. These emphases were reasserted in (The rio+20) conference under the sustainable development goal to “End hunger to achieve food security and improved nutrition and promote SA Sustainable Development Goals 2(SDG2).
FAO (Zoveda et al.,2014) defines five fundamental principles of sustainable food and agriculture that balance the social, economic, and environmental dimensions of sustainability:
Improving efficiency in the use of resources;
Conserving, protecting, and enhancing natural ecosystems;
safeguarding and improving rural livelihoods and social well-being;
Strengthening the resilience of people, communities, and ecosystems; and
Promoting good governance of both natural and human systems.
Present Characteristics of Rice Cultivation
The Sri Lankan economy contracted by 3.6% due to the Covid-19 pandemic. The agriculture sector also reported a 2.3% shrinkage as of the last quarter 2020. Nevertheless, the rice-growing and processing industry has shown promising resilience to the pandemic by gaining an expansion of 5.7%, favouring the economy (Department of Census and Statistics, 2021).
Table 1 reflects the efforts of farmers who have provided almost the national rice demand over the last decade. The annual report issued for 2022 by the central bank of Sri Lanka reported a 6.9% contribution from agriculture to the national output in the year 2021 which shows the regaining of the agriculture sector in the country amidst the post-recovery of the pandemic. However, the present situation might differ due to the prevailing hard-hit economic crisis.
However, farmers increasingly depend on chemical fertilizers (CF). Despite growing production volumes, organic fertilizer (OF) use is dramatically declining. Around 70% of the farmers are hardcore inorganic fertilizer users, whereas the rest are still in the mix of inorganic and organic users. The use of chemicals for other purposes has also increased during the last six years. The indicators shown in
Table 2 below reflect the intense use of chemicals, which could be counter-effective to sustainable agriculture principles discussed later in this chapter.
Nevertheless, farmers have been producing almost the total rice demand in the country. They are not satisfied with the profitability and equitability of their income (Wijesooriya et al.,2020), and their profit margin is non-excessive compared to the bank interest rates (Senanayake & Premaratne, 2016). These findings raise questions on the productivity of CF and the effectiveness of subsidiaries provided on CF in modern rice cultivation. The intense use of chemical weedicides, pesticides, and fungicides are arguably evolved as alternative remedies to mitigate the side effects caused due to unregulated CF use. Excessive use of pesticides in Sri Lankan agriculture is a growing concern (Nagenthirarajah & Thiruchelvam, 2008; Watawala et al., 2010). Lack of knowledge and information on the detrimental effects of overusing pesticides and other chemicals is critical in the sector (Watawala et al., 2003; Nagenthirarajah & Thiruchelvam, 2008; Jayasinghe & Munaweera, 2017; Jayasinghe, 2017; Nishantha, 2015). It is widely claimed that chemical fertilizers’ quality cannot always be guaranteed, with some products not even reaching the minimum standards due to their chemical and nutrient composition being potentially inconsistent or dangerous.
These findings evidence that the severity of chemical fertilizer usage and other intense uses of chemicals have been rampant across the local agricultural sector. Despite the efforts made by the government and non-governmental agencies to promote the more effective use of chemicals in agriculture, those measures did not yield anticipated results. Sri Lankan agricultural systems look economically and environmentally unsustainable and compromise food safety (Weerahewa, 2021). The situation does not favour sustainable agriculture (SA) principles and standards that many parts of the world are trying to adopt today. The researcher views as government’s effort to transition agriculture into more organic-centric farming as the right way forward. However, the approach to doing so was a massive failure. Therefore, the researcher suggests that as the initial step, the government should have assessed the farmer’s Sustainable Agriculture Potential (SAP) before the sudden ban on CF imports.
In addressing the need for more economical, social and environmentally friendly agriculture, the government stopped importing CF, marking a massive step toward transitioning Sri Lankan rice cultivation into a more sustainable path. The ban on chemical fertilizers in 2021 was inspired by the Sri Lankan government’s focus on promoting and popularizing organic agriculture. This policy might have been developed based on claims of the adverse effects of chemical fertilizers mentioned above. The high import cost of agrochemicals, the unbearable subsidy schemes and the profitability concerns on CF use are some of the underpinning concerns for such a policy decision. Also, the connection drawn between the use of chemical fertilizers and an increased incidence of cancer and chronic kidney disease found among farmers within the dry zone might be a concern. Nevertheless, the direct relationship between chemical fertilizers and these illnesses is subject to further investigation (Lanka, 2022). However, regardless of its motives, the policy decision failed. The decision was overturned within less than a year.
The decision to ban CF use has erupted a massive perturbation in the rice cultivation sector. The farmers reacted to the situation by coming out to the streets in large processions showing their agitation against this decision. Their frustration and dissatisfaction show the magnitude of the issue, which created doubts about the continuation of cultivation and fulfilling the food security need of the country in upcoming seasons. Over six or so decades, the farmers have been encouraged to use CF through a chain of subsidiaries while delivering CF to their doorsteps (Central Bank, 2020b). During the introduction of CF, the practice of CF use had sometimes been ascribed to their individual preferences. (Department of Census and Statistics of Sri Lanka,1962). The practice has been continued by applying quantities determined at their whims in farm fields, perhaps not knowing the actual cost of it and other consequences. Irrespective of the outcomes, they are very attached to using CF in modern rice farming.
The country’s foreign currency reserves had reached $8,864.98 million as of June 30, 2019. Before the Covid-19 break, on February 28, 2020, the resources were at $7,941.52 million. But as earnings from tourism dropped from $3,606.9 million in 2019 to $506.9 million in 2021 and foreign employment remittances dropped from $6,717.2 million to $5,491.5, the reserves started depleting. The reserves fell to $4,055.16 million in end-March 2021, $2,704.19 million at the end of September, and $1,588.37 million by end-November 2021. At the end-February 2022, data from the Central Bank of Sri Lanka’s website showed the total official forex reserves at $2,311.25 million, which suffices for just over 1.3 months of imports. (Central bank, 2022). This dramatic drop in foreign reserves signals that farmers would no longer have ample amounts of chemical fertilizers in the market as they used to. The current national inflation has reached over 60% and keeps increasing (Central bank, 2022). Therefore, the farmers’ affordability of the new market price of imported chemical fertilizers is questionable. Farmers must find a way forward for more economical, social, and environmentally friendly rice farming.
This failed decision of governments’ efforts to transition agriculture into a more sustainable path shows that the policy makers and decision-makers are not fully aware of farmers’ SAP. The researcher believes it is a timely need to assess farmers’ SAP, which will bring the ground evidence on farmers’ potential to adopt more SA-friendly farming. This evidence will be imperative to the future decision of the way forward. However, the researcher realizes that measuring farmers’ SAP is not straightforward and attempts to propose a scientific model and set of indicators to measure farmers’ SAP through a research study in Mahaweli Block H of Anuradhapura District of Sri Lanoka. The research requires defining the constructs of SAP and identifying a comprehensive set of indicators to measure those constructs.
There are various research studies (Petway et al., 2019; Waseem et al., 2020; Dharmawan et al.,2021; Gebska et al., 2020; Lichtfouse et al., 2009; Curry et al., 2012; Cusworth & Dodsworth, 2021) in this research discipline and researchers have found out several factors which could measure the farmers SA potential. The researcher finds these studies are very insightful for his objectives. However, no consolidated framework with explicit constructs and indicators can be directly adopted to assess farmers’ SAP. The researcher proposes a measurement framework and indicators developed following the scientific process in this paper.
What constructs can define farmers’ sustainable agriculture potential (SAP), and what are the measurement indicators to measure those constructs?
What are the determining constructs of farmers’ sustainable agriculture potential?
What are the proxy indicators that might comprehensively explain those constructs?
How to differentiate the most productive indicators derived in the above step
How to conclude the validity of those indicators
This study’s research objective is to identify the constructs of farmers’ sustainable agriculture potential (SAP) and determine measurement indicators to measure those constructs.
To identify the constructs of farmers’ sustainable agriculture potential (SAP)
To find out a comprehensive list of proxy indicators, those will explain those constructs
To differentiate the most productive indicators derived in the above step
To conclude the validity of those indicators.
In general, most farmers are a subset of rural livelihood. According to DFID, “A livelihood comprises the capabilities, assets (including both material and social resources) and activities required for living.” A livelihood is sustainable when it can cope with and recover from stresses and shocks and maintain or enhance its capabilities and assets both now and in the future while not undermining the natural resource base. Ashley & Carney (1999) adapted this definition from Chambers & Conway (1992), who introduced sustainable rural livelihood assets in DIFID’s sustainable livelihood framework. The framework describes the rural livelihood assets in five main categories: Human Capital, Social Capital, Financial Capital, Physical Capital, and Natural Capital. Carney (1998), Scoones (1998), and Batterbury & Forsyth (1999) supplemented this explanation of five-dimensional capital assets. The researcher adopts these five capital assets to help identify the farmers’ SA potential. The following section of this chapter explains each capital asset’s literature synthesis.
Table 3.
The constructs of Farmers’ SA potential.
Table 3.
The constructs of Farmers’ SA potential.
Constructs of Farmer’s SA Potential |
Type |
Category |
Farmers’ SA Potentials (FSAP) |
Composite |
Latent |
Human Capital (HC) |
Independent |
Latent |
Social Capital (SC) |
Independent |
Latent |
Financial Capital (FC) |
Independent |
Latent |
Physical Capital (PC) |
Independent |
Latent |
Natural Capital (NC) |
Independent |
Latent |
This study aims to formulate a measurement model using existing literature suggestions and find a way of measuring the mechanism of farmers’ SAP. Since farmers are a prominent subset of rural livelihood, the researcher adopts the rural livelihood assessment framework for the assessment model with five capital assets shown above. However, the explaining indicators of those five capital assets required the representation of sustainable agriculture principles and standards. The researcher believes this model is suitable for this expletory study as defined by its objectives. The following section of this paper discusses the finding of the indicators to measure those indicators.
Research Method and Materials
The proposed measurement model shown in
Figure 1 consists of five latent variables. The study aims to explore the ground reality of farmers’ SAP. Quantitative research approaches using a structured questionnaire are common research studies researchers adopt in investigating socio-economic and natural phenomena like this study (Leedy & Ormrod, 2001; Cohen et al., 2007). Blanche et al. (2006) suggest a quantitative-descriptive approach to investigate the epistemologies related to constructs of this nature. The researcher adopts a quantitative descriptive approach for this study. According to quantitative measurement theories explained in the literature (Hair et al., 2017), researchers can derive measurement indicators in two ways, either in a “formative” or “reflective” manner, which depends on the nature of the construct of the study.
Diamantopoulos & Winklhofer (2001) suggest forming formative indicators if the causal priority between indicators and construct is from indicators to the construct. On the contrary, if the causal focus is from construct to indicator to form reflective indicators. Also, Fornell (1982) suggests formulating formative indicators if a combination of indicators explains the construct or developing reflective indicators if a trait presents the indicators. Similarly, Rossiter (2002) argues for selecting reflective indicators if indicators represent consequences and formative ones if indicators represent the cause. The following diagram (
Figure 2) demonstrates these two measurements’ coverage differences between the abovementioned research domains. The formative approach maximizes the variances explained for the construct. Maximizing the variance explained is a fundamental requirement in this study. i.e., to exhaustively identify underlining variables of each latent construct that would optimally contribute to the formation of constructs. Those required distinguish indicators to explain each capital asset which does not necessarily correlate with each other but should contribute to explaining (formation) the construct giving substantial comprehension.
As necessitated by the objectives and the context of this study and combined with the literature suggestions above, farmers’ SAP are treated as combined causal effects of the five capital assets.
Figure 3.
Composition of Farmers’ Sustainable Agriculture Potential Measurements. (Source: Author’s creation)
Figure 3.
Composition of Farmers’ Sustainable Agriculture Potential Measurements. (Source: Author’s creation)
The literature suggests Partial least squares structural equation modelling (PLS-SEM) technology to assess models with such formative indicators (Hair et al., 2017). PLS-SEM techniques provide parameters, algorithms, and rules for such analysis, which are discussed in detail in this chapter below. PLS-SEM techniques require some alternative reflective questions on each formative latent construct (in this case, five capital assets) to prove the convergent validity of the constructs, as explained in measurement theory (Hair et al., 2017). Considering these requirements, the following Table shows this study’s formative and reflective indicator requirements.
Table 4.
Formative and reflective constructs of the model.
Table 4.
Formative and reflective constructs of the model.
Variable |
Type |
criteria |
Human Capital (HC)
|
Formative |
The constructs are composed of a combination of indicators
No covariance is expected among indicators
The indicators are not mutually exchangeable
The indicators cause the constructs
|
Social Capital (SC)
|
Formative |
Financial Capital (FC)
|
Formative |
Physical Capital (PC)
|
Formative |
Natural Capital (NC)
|
Formative |
HC, SC, FC, PC, NC |
Reflective |
|
Formation of indicators
Scales and Measurement
Determining the scale of measurement is essential in deriving the questions. Hair et al. (2016) suggest using ordinal scales, such as Likert scale coding, as standard in deriving similar measures ensuring the equidistance of scale points. The researcher paid particular attention to the coding to fulfil the requirement of equidistance in using such scales. Therefore the questions are framed in the scale of 5-point Likert scale with the categories (1) strongly disagree, (2) disagree, (3) neither agree nor disagree, (4) agree, and (5) strongly agree, with the inference that the “distance” between categories 1 and 2 is the same as between categories 3 and 4. The questions are planned for pre-testing through scholarly reviews and assessed through a pilot survey to test the scale’s validity and the questions’ productivity.
A thorough literature review based on the above rural livelihood asset definitions reveals various socio-economic, socio-ecological, and sociocultural factors of farmers’ SA potentials investigated in the previous studies.
Table 5 below summarizes the outcome of the literature review indicators, and measurement scales the researchers have found in their studies domain over the past decades.
According to Coleman (1988), human Capital is new skills and capabilities that enable one to act in a new way to prove productivity. Acquiring knowledge, building awareness and skills, developing positive attitudes, and blending values and beliefs with modern farming practices could be the most significant motivating factors to adapt the SA practices. Improved literacy level, experiences, skills, household health, and living standards would be a strong determinant of Human Capital, which researchers have investigated in similar studies (Memon, 1989; Petway et al., 2019; Porritt Jonathon, 2011; Radcliffe, 2017)
Social Capital is an asset produced when people interact, creating relationships and networks of trust and shared understanding (Gotschi et al. 2008). According to Sobel (2002), social Capital describes circumstances in which individuals can use membership in groups and networks to secure benefits (Putnam et al. 1993), and Coleman (1994) in detail defines Social Capital as the networks, norms, trust, and links of reciprocity that facilitate cooperation and coordination. Accrued Social Capital of farmers was instrumental in uptaking new agricultural practices; a study of young Greek farmers found that those with higher social Capital were more likely to be innovative (Koutsou et al., 2014).
Cash flow generation is essential for farmers to afford to take risks and develop a longer-term vision than daily subsistence. A synthesis carried out by Vorley (2002) on projects of ‘policies that work for sustainable agriculture and regenerating rural livelihood’ demonstrates that the self-financing capacity of Brazilian farmers is vital to allow them to adopt more environmentally friendly practices. In the same study, limited access to credit is a significant impediment to small-scale agricultural production. Credit programs seldom reach smaller farmers due to power disparities and rent-seeking by larger farmers. The Bolivian case study under the same project explains that in contrast to large-scale mechanized agriculture, smallholders had no or little access to credit since they had no collateral resulting in little commercial value for banks. The case studies also demonstrate the importance of off-farm income, such as retirement funds and city jobs. Many low-income households use migrant relatives’ remittances for Consumption or to pay expenditures such as education and health, so little usually remains for investment and farm-based accumulations (Tacoli, 1998). In general terms, financial Capital explains an individual’s or institution’s savings, credit, and remittances, in this case, which would be direct determinants of farmers’ ability to adapt SA practices.
Many researchers have investigated the ownership of farm plots, machinery, buildings, equipment, cultivation-well, granary, tools and equipment, transport networks, and access to technologies, including ICT, in assessing farmers’ physical Capital, which might influence their readiness for SA adaptation (Myeni et al.,2019; Arellanes et al., 2003; Petway et al., 2019). The farm size and ownership of the farming plot are significant factors in SA studies. Gachango et al. (2015) ; Rodríguez-Entrena & Arriaza (2013) find that the size of the farm positively relates to conservation agriculture adaptation. Whereas (Läpple & van Rensburg, 2011; Kallas et al., 2010) find that farm size inversely relates to the adaptation capabilities of organic farming. However, in their literature synthesis, Knowler & Bradshaw (2007) found that several researchers have tested this variable in 18 SA studies. Six studies had seen a positive correlation with SA, two were inversely related to SA, and ten studies were found insignificant. Given the mixed findings of previous researchers, the researcher believes farm size could contribute to farmers’ readiness for SA relating in either way. Also, the convenience of renting and continuing with farmland is investigated in similar other studies.
Rezvanfar et al. (2009) concluded that accelerated soil erosion and declining fertility are significant constraints to agricultural production and SA. Soil fertility is the ability of soil to sustain plant growth and optimize crop yield. The organic and or inorganic fertile fill the deficiencies. According to (Spaling & Vander 2019), Farmers claim that retaining crop residue or regularly adding mulch to the field improves soil fertility (organic matter, nutrients). Zahra (2018) finds that soil fertility declines because of the growing use of chemical fertilizers and pesticides. The SA often reports increasing soil organic matter and concerns about nutrient availability. Some researchers are pointing out that soil organic matter is contingent on the availability of organic inputs (crop residue, manure, compost) (Hobbs et al., 2008; Twomlow et al., 2009; Luo et al., 2010; Marongwe et al., 2011; Mupangwa et al., 2012; Palm et al., 2014; Dordas, 2015). The proximity of organic inputs also affects availability. Fields nearer to the homestead usually have higher organic matter because sources of manure and compost are nearby (Zingore et al., 2007; Guto et al., 2012).
The exhaustive literature review summarized above produced 108 formative questions and 22 reflective questions in the form of statements. The frame of the questions is so that the respondent can provide their answer on a scale of “Strongly Disagree” to “Strongly Agree.” (5 points Likert scale). The complete research questionnaire is attached in Annex-1 of this paper.
Table 6.
The number of Formative and reflective indicators of constructs.
Table 6.
The number of Formative and reflective indicators of constructs.
Capital Asset |
Number of Formative Indicators |
Number of Reflective Indicators |
Human Capital |
38 |
5 |
Social Capital |
22 |
4 |
Financial Capital |
15 |
3 |
Physical Capital |
15 |
5 |
Natural Capital |
18 |
5 |
Pre-testing a questionnaire using a small number of respondents is a widely used research practice to extract the most productive and appropriate questions (Mugenda & Mugenda, 2003). There is broad consensus on this practice in the literature on the importance of pilot studies on data collection instruments. This step is vital to ensure that respondents have clarity and understanding of the questions with no ambiguity (Reynolds & Diamantopoulos, 199; Babbie, 2004; Moser & Kalton, 2004; Neuman, 2006: McBurney & White, 2007). Also, such initial testing enables the researcher to test the length and sequencing of questions (Easterby-Smith et al. 2021) and to discover errors (Reynolds & Diamantopoulos 1993). Such testing helps train the research team (Cooper & Schindler, 2003), rectify inadequacies, and reduce biases. A pilot survey also serves to determine how appropriate and comprehensive the questions are and reveal vague questions (Sekaran, 2003); protect against redundancy of questions (Babbie, 2004); assess marginal questions (Moser & Kalton 2004), and refine and perfect the instruments (Synodinos, 2003).
Anuradhapura district is the dominant rice-producing district in Sri Lanka. According to figures published in the census and statistics in 2019/2020, during the “Maha” cultivation season (the primary rice cultivation season in Sri Lanka), Block H of Mahaweli accounts for 20% of the land area in the Anuradhapura district. This division H comprises approximately 14,170 hectares of developed land under four colonization schemes. Figure 4 and the Table below show the geographical layout of block H and sown extents of rice and their percentages in the regions belonging to it. Most rice cultivation plots (more than 80%) are less than 2.5 Acre plots which denotes that the sown extent is a fair representation of the farmer population in this region.
Table 8.
Sown Extent (acres) in Mahaweli zones H in Anuradhapura district.
Table 8.
Sown Extent (acres) in Mahaweli zones H in Anuradhapura district.
Rice Cultivation Region in Block H |
Acres |
|
% To District Total |
Galnewa |
9082 |
|
3% |
Meegalewa |
5220 |
|
2% |
Galkiriyagama |
5367 |
|
2% |
Madatugama |
7307 |
|
2% |
Eppawela |
8122 |
|
3% |
Tabuttegama |
7129 |
|
2% |
Nochchiyagama |
8257 |
|
3% |
Thalawa |
7437 |
|
3% |
According to Han et al. (2018), 225 farmer organizations and 25,623 registered members are in block H of Mahaweli. Aheeyar (2007) found that 94% of the farmers in block H engage in rice cultivation. Krejcie & Morgan (1970) developed a table to determine a population’s sample size for easy reference. This reference table shows that 377 samples would be sufficient for a size of 20,000 people and 379 for a population of 30,000. Therefore, the researcher adopts 380 samples for this study. The Table below shows sample slices determined for each region.
Table 9.
The number of samples by each region.
Table 9.
The number of samples by each region.
Cultivation Divisions in Block H |
Sown Extent |
Number of Samples |
Galnewa |
9082 |
60 |
Meegalewa |
5220 |
34 |
Galkiriyagama |
5367 |
35 |
Madatugama |
7307 |
48 |
Eppawela |
8122 |
53 |
Tabuttegama |
7129 |
47 |
Nochchiyagama |
8257 |
54 |
Thalawa |
7437 |
49 |
Total Mahawali (H) Block |
57921 |
380 |
Figure 4.
Geography of Mahaweli system H Block. (Source: Aheeyar, (2007)
Figure 4.
Geography of Mahaweli system H Block. (Source: Aheeyar, (2007)
Some convenient samples were collected through face-to-face interviews with 64 respondents from May 23 to June 4 2022, in some regions shown above. Key informants (Government Agricultural field officers of these divisions) administered the Questionnaire. Respondents for the Questionnaire were identified by referring to the government’s fertilizer distribution lists available to agriculture officers of this division.
- Data
ata Analysis of Pilot Survey
The guidance and suggestions explained in the PLS-SEM literature (Hair et al.,2017) are closely followed in each data analysis stage and in concluding the results. As discussed above, the constructs consist mainly of formative and several alternative reflective indicators for convergent validity testing. The measurements for five capital asset constructs comprised 102 formative indicators and 22 reflective indicators. The reflective indicators support measuring the convergent validity of each construct. The measuring indicators are on ordinal Likert measurement coded following the abovementioned techniques. The measurement analysis necessitated applying the following rules and conditions suggested in the literature, and the analysis differentiated the most effective and reliable indicators for the initial Questionnaire.
Principle component analysis is vital in finding out the most compelling questions for research instruments, usually performed through pilot surveys. PLS regression differs from regular regression, however, because in developing the regression model, it constructs composite factors from the multiple independent variables and the dependent variable(s) through principal component analysis. PLS regression is an analysis technique that explores the linear relationships between multiple independent variables and a single or multiple dependent variable(s). In developing the regression model, it constructs composites from the multiple independent and dependent variables (s) through principal component analysis (Hair et al., 2017). The measurement model analysis described below is equivalent to the principal component analysis and fulfils this essential need for the new instrument development of this research.
The literature suggests applying the following steps in sequence in assessing formative indicators like these constructs, facilitating the analysis of the indicators with 64 samples collected during this survey.
Step 1: Assess the convergent validity of formative measurement constructs
Step 2: Assess the formative measurement constructs for collinearity issues
Step 3: Assess the Significance and relevance of the formative indicators
(Hair et al. (2017)
Assessing Convergent Validity:
The following method suggested in the literature for convergent validity (CV) testing is considered in measuring and evaluating formative measurement indicators. The technique analyses the CV of formative constructs by calculating the correlation of formative measurement with alternative reflective measures of the same construct (i.e., each construct is considered as separate sub-models as “construct-formative” and construct-reflective” as shown in
Figure 3. The formative indicators, in a linear way, form the formative latent construct, and the explained variance (R2 value) of the compositely created latent construct should be equal to 1 in an ideal situation (Bollen, 2011; Bollen & Bauldry, 2011)
Figure 5.
Model to measure convergent validity of formative indicators. Source: (Hair et al. (2017)
Figure 5.
Model to measure convergent validity of formative indicators. Source: (Hair et al. (2017)
The literature suggests the strength of the path coefficient linking the two constructs (formative and reflective) is of magnitude 0.80 or a minimum of .070 for satisfactory convergent validity. In other means, this reflects the indicative R² value of the construct to be 0.64 or at least 0.50 to prove the convergent validity. The five formative latent constructs of the model were analyzed by applying the above criteria and rules.
Table 6 below depicts the summary of the CV analysis of formative constructs of the model
Table 10.
Results of convergent validity analysis.
Table 10.
Results of convergent validity analysis.
Latent Construct |
Path Coefficient |
R2 Value |
HCF→HCR
|
0.924 |
0.853 |
SCF→SCR
|
0.784 |
0.615 |
FCF→FCR
|
0.895 |
0.801 |
PCF→PCR
|
0.828 |
0.686 |
NCF→NCR
|
0.700 |
0.491 |
In PLS-SEM literature, collinearities of formative indicators are measured using the variance inflation factor (VIF), defined as the reciprocal of tolerance. The tolerance represents the variance of one formative indicator, which the other indicators in the same construct do not explain. In this concept of PLS-SEM, a tolerance value of 0.20 or lower and a VIF value of 5 or higher indicate a potential collinearity problem (Hair et al., 2011). All formative indicators’ collinearity analysis (VIF values) shows that some indicators have exceeded the above thresholds. These questions were ruled out from the Questionnaire and not considered as productive to retain as measurement. Annex 02 of this paper includes the VIF analyses of the above five formative constructs.
The relevance of the indicators’ contribution in forming the construct is examined by analyzing each indicator’s outer weight (relative importance) and outer loading (absolute importance). The significance of such contribution is measured using the bootstrapping technique provisioned in PLS-SEM techniques. The following rules are proposed in the literature to determine their relevance and significance.
When an indicator’s weight is significant, there is empirical support to retain the indicator
When an indicator’s weight is not significant, but the corresponding item loading is relatively high (i.e., ≥0.50) or statistically significant, the indicator should generally be retained.
If the outer weight is non-significant and the outer loading is relatively low (i.e., <0.5), you should strongly consider removing the formative indicator from the model.
After applying these rules to this measurement model, the results show some indicators did not satisfactorily comply with the above rules and conditions. They were ruled out from the Questionnaire and not considered effective measurements. The results of significance and relevance analyses of formative indicators are included in Annex -2 below. The indicators marked in “green” in the results tables are the indicators that passed the tests. The figures marked in “light green” the figures within the acceptable threshold.
After applying the above data analysis rules, less relevant and insignificant measuring variables were eliminated from the measurement model. Out of 108 formative questions of five constructs, only 69 indicators were qualified to be retained. Of 22 reflective indicators, 18 were found as productive measurements. The indicators carried forward for a compressive survey with a larger sample size to further validate their applicability.
Table 11.
Productive Indicators to measure farmers’ sustainable agriculture potentials.
Table 11.
Productive Indicators to measure farmers’ sustainable agriculture potentials.
# |
Indicator |
Measuring Indicators description |
|
Human Capital |
|
Human Capital - Generic reflective indicators |
1. |
HCGQ1 |
I am well motivated to continue with rice farming |
2. |
HCGQ3 |
I am well aware of nature-friendly farming activities |
3. |
HCGQ4 |
I regularly apply nature-friendly farming activities in rice farming |
|
Human Capital -Composite formative indicators |
|
|
Health and well-being |
4. |
HCHAW3 |
It is infrequent our health issues impact our rice farming activities |
5. |
HCHAW5 |
I am well satisfied with my relationships with friends |
6. |
HCHAW7 |
I am not worried at all about everything that is happening these days |
7. |
HCHAW8 |
I am optimistic about the next 12 months |
|
|
Knowledge and Farming Experiences |
8. |
HCKAFE10 |
I know the most effective method that can control weeds |
9. |
HCKAFE5 |
I know the importance of utilizing organic compost |
10. |
HCKAFE6 |
I know the irrecoverable consequences of neglecting irrigation on time |
11. |
HCKAFE8 |
I know biological methods to control pests effectively |
|
|
Planning and organizing |
12. |
HCPAO3 |
I do the farming at the proper time |
|
|
Attitudes |
13. |
HCA1 |
We must protect natural resources for the next generation even if it incurs short-term losses to our outturn |
14. |
HCA3 |
Intense use of chemicals in farming affects the health of people and animals |
|
|
Beliefs and values |
|
HCBAV1 |
I believe that minimizing the use of chemicals is a timely need |
|
HCBAV3 |
The yield produced through fewer chemicals is healthier |
|
HCBAV6 |
My children/child will continue with our farming traditions |
|
Social Capital |
|
(SA practices Examples: Selecting better seeds for improved yield, minimizing chemical fertilizer use, improving soil fertility, minimum use of chemicals in pests and weed control, minimizing water waste and pollution, etc.) |
Social Capital - Generic reflective indicators |
15. |
SCGRQ1 |
I am living in a society where I am thoroughly encouraged to adopt SA practices |
16. |
SCGRQ2 |
I am living in a society where I am fully supported in adopting SA practices |
17. |
SCGRQ3 |
I am living in a society where SA is considered an important |
18. |
SCGRQ4 |
I will gain more social recognition if I adopt SA practices |
Social Capital -Composite formative indicators |
|
|
Networks and connectedness, a) Bonding -similar individuals within a network, b) Bridging conservationists, c) Linkage -policymakers |
19. |
SCNBBL1 |
Farmer organization provides me with significant help for my farming activities |
20. |
SCNBBL2 |
I receive significant support from community associations in which I am a member of |
21. |
SCNBBL6 |
I receive significant support from agriculture researchers for my farming activities |
|
|
Trust and reciprocity |
22. |
SCTAR1 |
I trust the advice and support received from my fellow farmers on the above practices |
23. |
SCTAR4 |
I trust the advice and support received from banks and other financial institutions on the above practices |
24. |
SCTAR5 |
I trust the advice and support received from insurance companies on the above practices |
25. |
SCTAR6 |
I trust the advice and support received from agrochemical sellers on the above activities |
|
|
Norms and values |
|
SCNAV1 |
Some fellow farmers compel me to more nature-friendly farming practices |
|
SCNAV2 |
I am always happy to produce harvest with higher standards |
|
SCNAV3 |
I will receive more social recognition if I adapt to more environmentally friendly farming methods |
|
SCNAV4 |
I will receive better price/demand if I produce paddy using organic matter and with less chemical use |
|
|
Power |
|
SCP1 |
It is a condition of my land load to adapt the above practices |
|
SCP2 |
Paddy buyers give better rates to farmers who adopt those practices |
|
SCP3 |
Agro-Input sellers give discounts and credit facilities to farmers who adopt the above practices |
|
SCP4 |
I feel government officials are becoming more supportive of the farmers who adopt the above practices |
|
SCP5 |
I find that wealthy farmers in our society support us in adapting the above practices |
Financial Capital |
Financial Capital - Generic reflective indicators |
26. |
FCGRQ1 |
I am economically strong to continue with rice farming |
27. |
FCGRQ2 |
Getting financial aid for my farming needs is not challenging |
28. |
FCGRQ3 |
My rice farming is generally profitable |
Financial Capital - Composite formative indicators |
|
|
Savings and cash flow |
29. |
FCSACF1 |
Ensuring household food security is not a challenge for me |
30. |
FCSACF2 |
Meeting of financial needs of my family is not a challenge for me |
31. |
FCSACF3 |
I do make a good surplus in each season |
32. |
FCSACF4 |
Re-investing in rice farming is not a challenge for me |
|
|
Financial Credits |
|
FCFC3 |
I can borrow money from local providers easily for a reasonable interest rate |
33. |
FCFC1 |
Obtaining a loan from a state bank is not a challenge for me |
34. |
FCFC2 |
Obtaining a loan from a private bank is not a challenge for me |
|
|
Remittances |
35. |
FCR1 |
I receive substantial income from my other businesses |
36. |
FCR3 |
Though rice farming is my main job, I do part-time jobs with good earning |
37. |
FCR4 |
In addition to rice farming, I do other agriculture, which gives me a considerable income |
38. |
FCR5 |
I receive regular income from my savings in the bank |
|
|
Profitability |
|
FCP1 |
I get a fair price for my harvest, and the income is generally profitable |
|
FCP2 |
The selling price keeps increasing in parallel with the cost increase of agro-inputs |
|
FCP3 |
The profit I generate keeps increasing with the price increase of other household commodities |
Physical Capital |
Physical Capital - Generic reflective indicators |
39. |
PCGRQ1 |
I have the required types of machinery and equipment for rice farming |
40. |
PCGRQ2 |
I can afford to hire the types of machinery when needed |
41. |
PCGRQ3 |
I have access to SA agricultural knowledge |
42. |
PCGRQ4 |
I get market information easily |
43. |
PCGRQ5 |
I have easy access to agro-inputs selling outlets |
Physical Capital - Composite formative indicators |
|
|
Availability of machinery |
|
(Machinery examples (Sprayer machine, water pump, two-wheeler tractor, four-wheeler tractor, planter, harvester, etc.) |
44. |
PCAOM1 |
I do possess the required agricultural types of machinery and equipment necessary for my farming |
45. |
PCAOM2 |
Maintaining those types of machinery is not an issue for me |
46. |
PCAOM3 |
I can afford to hire the above types of machinery whenever needed with no issues |
47. |
PCAOM4 |
The charges I pay for the hiring of types of machinery are affordable |
48. |
PCAOM5 |
The charges I pay for hiring types of machinery are reasonable |
|
|
Access to information and consultancy services and market information |
49. |
PCAIS1 |
I listen to radio programs related to rice farming, and they are useful |
50. |
PCAIS2 |
I watch television programs on rice farming, and they are useful |
51. |
PCAIS6 |
I read newspaper articles related to rice farming, and they are useful |
52. |
PCAIS7 |
I regularly read the leaflet and broachers distributed on rice farming, and they are useful |
53. |
PCAIS3 |
I find helpful agriculture-related videos on the internet and social media, and they are useful |
|
|
Access infrastructure and availability of labour |
|
PCAIAL1 |
It is easy to access the paddy buyers |
|
PCAIAL2 |
It is easy to access agriculture suppliers and vendors |
|
PCAIAL3 |
It is easy to find the labour required for rice farming activities |
|
Natural Capital |
Natural Capital - Generic reflective indicators |
54. |
NCGRQ1 |
The soil condition of my farm plot can be improved for organic fertilizer use |
55. |
NCGRQ2 |
I get an adequate water supply for my farming |
56. |
NCGRQ3 |
The location of my farm plot is less vulnerable to natural disasters |
Natural Capital - Composite formative indicators |
|
|
The soil fertility of the land |
57. |
NCSFL1 |
I think the soil fertility of my farm plot is in good condition |
58. |
NCSFL2 |
I think I can improve the soil in my farm plot for organic fertilizer use |
|
|
Availability of carbonic substances to improve soil fertility |
59. |
NCACS3 |
I can prepare the compost required for my farm plot |
60. |
NCACS4 |
I can find a good amount of green manure crop in the vicinity of my farm plot |
61. |
NCACS2 |
I can find reasonable amounts of poultry manure or cow dung in the vicinity of my farm plot |
|
|
Effectiveness of waterworks and adequacy of water |
62. |
NCEWAW1 |
The waterworks to my farm plot are well maintained |
63. |
NCEWAW2 |
I am satisfied with the timing of the water-releasing intervals for farming |
64. |
NCEWAW3 |
I can rely on rainwater, too, to a reasonable extent |
65. |
NCEWAW4 |
I can pump water to my plot if required |
|
|
Frequencies of whether extremes and animal attacks |
|
NCFWA1 |
I am not facing severe crop damage due to drought |
|
NCFWA2 |
I am not facing severe crop damage due to floods |
|
NCFWA3 |
I am not facing severe crop damage due to animal attacks |
Three key informants who were adequately oriented on the survey’s objectives were deployed to conduct the study. These key informants administered the data collection in the prescribed locations during October and November 2022. The survey teams randomly met rice farmers at their doorsteps or farm fields and marked the responses for each question of the survey questionnaire in real-time. The data collection concluded after they collected 400 samples from each region. Stratified random sampling was the sampling technique adopted in this study.
- Data
ata analysis
This data analysis aims to investigate further the validity of the selected question identified in the pilot survey. As detailed below, the techniques and guidance suggested in the PLS-SEM data analysis technique on measurement model analysis were deployed on each construct.
Human Capital is defined in five grouped well-being variables, Attitudes, Health & well-being, knowledge & experience, Planning & organizing, and Beliefs & values. These five grouped variables were measured using survey questions. The following diagram and Table show that the indicators comply with PLS-SEM’s rules. This means those indicators are acceptable measures for the farmer’s Human Capital contribution to SAP.
Figure 6.
Path coefficient, significance, and relevance of Human Capital variables.
Figure 6.
Path coefficient, significance, and relevance of Human Capital variables.
Table 12.
VIFs of Human Capital Variables.
Table 12.
VIFs of Human Capital Variables.
Inner Variables |
VIF |
Outer Variables Continued. |
VIF |
Attitudes |
1.468 |
HCHAW8 |
1.245 |
Beliefs & values |
1.402 |
HCHAW7 |
1.167 |
Health & wellbeing |
1.281 |
HCHAW5 |
1.178 |
Knowledge & Experiences |
1.733 |
HCHAW3 |
1.205 |
Planning & organizing |
1.629 |
HCBAV3 |
1.138 |
Outer Variables |
VIF |
HCBAV1 |
1.138 |
HCPAO3 |
1 |
HCA3 |
1.244 |
HCKAFE8 |
1.478 |
HCA1 |
1.244 |
HCKAFE6 |
1.509 |
HCKAFE10 |
1.106 |
HCKAFE5 |
1.121 |
|
|
The calculations resulted in a path coefficient value of 0.7 between formative and reflective constructs, approximately 0.5 R2, which is within the acceptable literature suggestions. The VIF values are also within the acceptable range, and each indicator’s outer weights show the significance for acceptance.
Social Capital is defined in five sub-dimensions: Power & Influences, Linkages & bonding, Trust & reciprocity, and Norms & values. The following figure and Table show that the indicators and the grouped variables satisfactorily complied with the PLS-SEM rules and requirements.
Figure 7.
Path coefficient, significance, and relevance of Social Capital variables.
Figure 7.
Path coefficient, significance, and relevance of Social Capital variables.
Table 13.
VIFs of Social Capital Variables.
Table 13.
VIFs of Social Capital Variables.
Inner Variables |
VIF |
Outer Variables continued |
VIF |
Linkages & bonding |
1.077 |
SCP1 |
1.239 |
Norms & values |
1.662 |
SCP2 |
2.816 |
Power & Influences |
1.858 |
SCP3 |
2.591 |
Trust & Reciprocity |
1.269 |
SCP4 |
1.016 |
Outer variables |
VIF |
SCP5 |
2.088 |
SCNAV1 |
1.203 |
SCTAR4 |
2.351 |
SCNAV2 |
1.265 |
SCTAR5 |
1.998 |
SCNAV3 |
1.419 |
SCNBBL2 |
1.372 |
SCNAV4 |
1.211 |
SCNBBL6 |
1.051 |
SCNBBL1 |
1.362 |
|
|
Like the other capital asset variables, Financial Capital is also defined using a set of grouped variables, Savings & cash flow, Financial credits, and Profitability, as shown in the diagram below.
The output of the above analysis confirms applicability of the above indicators to define the financial capital construct contribution to SAP.
Figure 8.
Path coefficient, significance, and relevance of Financial Capital variables.
Figure 8.
Path coefficient, significance, and relevance of Financial Capital variables.
Table 14.
VIFs of Financial Capital Variables.
Table 14.
VIFs of Financial Capital Variables.
Inner Variable |
VIF |
Inner Variable Continued |
VIF |
Financial Credits |
1.99 |
FCP3 |
1.334 |
Profitability |
1.512 |
FCSACF1 |
2.2 |
Savings & cash flow |
2.169 |
FCSACF2 |
2.659 |
Outer Variables |
VIF |
FCSACF3 |
2.777 |
FCFC1 |
2.711 |
FCSACF4 |
2.582 |
FCFC2 |
2.49 |
FCP1 |
1.134 |
FCFC3 |
1.344 |
FCP2 |
1.487 |
Access to information, Availability & affordability of machinery, Infrastructure & availability of labour are the grouped variables identified for Physical capital assessment for this study. The following diagram and the Table depict the relevance of the indicators and the variables to explain the Physical capital contribution to SAP.
Figure 9.
Path coefficient, significance, and relevance of Physical Capital variables.
Figure 9.
Path coefficient, significance, and relevance of Physical Capital variables.
Table 15.
VIFs of Physical Capital Variables.
Table 15.
VIFs of Physical Capital Variables.
Inner Variable |
VIF |
|
Outer Variable Continued |
VIF |
Access to information |
1.141 |
|
PCAIS6 |
2.35 |
Availability & affordability of machinery |
1.273 |
|
PCAIS7 |
1.992 |
Infrastructure & availability of labour |
1.286 |
|
PCAOM1 |
1.933 |
Outer Variable |
VIF |
|
PCAOM2 |
2.543 |
PCAIAL1 |
2.114 |
|
PCAOM3 |
1.78 |
PCAIAL2 |
1.77 |
|
PCAOM4 |
1.426 |
PCAIAL3 |
1.705 |
|
PCAOM5 |
1.381 |
PCAIS1 |
2.152 |
|
PCAIS3 |
1.294 |
PCAIS2 |
2.01 |
|
|
|
The natural Capital was assessed through 4 grouped variables: Soil fertility, Availability of carbonic substances, Waterworks & capacity of water, and Safety from natural disasters and animal attacks. The following figure and the Table show the indicators and grouped variables that satisfactorily define the NC construct of SAP.
Figure 10.
Path coefficient, significance, and relevance of Natural Capital variables.
Figure 10.
Path coefficient, significance, and relevance of Natural Capital variables.
Table 16.
VIFs of Natural Capital Variables.
Table 16.
VIFs of Natural Capital Variables.
Inner Variable |
VIF |
Inner Variable Continued |
VIF |
Availability of carbonic substances |
1.347 |
NCEWAW4 |
1.16 |
Safety from natural & animal attacks safety from natural disasters and animal attacks |
1.413 |
NCFWA1 |
1.556 |
Soil fertility |
1.5 |
NCFWA2 |
1.582 |
Waterworks & adequacy of water |
1.627 |
NCFWA3 |
1.035 |
Outer variables |
VIF |
NCSFL1 |
1.542 |
NCACS2 |
2.17 |
NCSFL2 |
1.542 |
NCACS3 |
2.658 |
NCEWAW3 |
1.206 |
NCACS4 |
2.33 |
NCEWAW1 |
1.21 |