Article
Version 1
Preserved in Portico This version is not peer-reviewed
Impact of Twig-Tip Dieback on Leaf Nutrient Status and Resorption Efficiency of Mango Trees
Version 1
: Received: 29 May 2024 / Approved: 30 May 2024 / Online: 30 May 2024 (10:49:37 CEST)
Version 2 : Received: 24 June 2024 / Approved: 24 June 2024 / Online: 24 June 2024 (13:52:09 CEST)
Version 2 : Received: 24 June 2024 / Approved: 24 June 2024 / Online: 24 June 2024 (13:52:09 CEST)
A peer-reviewed article of this Preprint also exists.
Asis, C.A.; Niscioli, A. Impact of Twig-Tip Dieback on Leaf Nutrient Status and Resorption Efficiency of Mango (Mangifera indica L.) Trees. Horticulturae 2024, 10, 678. Asis, C.A.; Niscioli, A. Impact of Twig-Tip Dieback on Leaf Nutrient Status and Resorption Efficiency of Mango (Mangifera indica L.) Trees. Horticulturae 2024, 10, 678.
Abstract
Mango twig-tip dieback (MTTD) is a new type of mango decline, but its impact on the trees’ mineral nutrition is unknown. This study was conducted to determine the effect of MTTD infection on the nutrient status, balance, and resorption efficiency (RE) of mango. Leaf nutrient concentrations and deviation from the optimum percentage (DOP) indices of ‘Kensington Pride’ (KP) mango trees with low (LD) and high (HD) levels of MTTD infections were analyzed to compare the foliar nutrition status and nutrient balance between the LD and HD trees. Moreover, the nutrient resorption efficiency of MTTD-infected dried leaves (RED) was compared with the resorption efficiency of healthy (RES) leaves of KP mangoes. The concentrations of Ca, Mg, Cu, Fe, Mn, and Zn were lower in the HD trees than in the LD trees. But the K content was higher in the HD trees, and its DOP index was sufficient, while the K concentration was low and deficient level in LD trees. Moreover, DOP indices for Ca, Mn, and Zn were less deficient in LD trees than in HD trees, and overall nutrient imbalances were exacerbated in HD trees. RED was significantly lower than RES for N, P, S, Cu, Fe, and Zn but significantly higher than RES for K. The study underscores the significant influence of MTTD on the mineral nutrition of KP mangoes, revealing distinct nutrient variations between trees with low and high MTTD infection levels. These findings have important implications for mango crop management, emphasizing the need for targeted nutrient interventions to address imbalances induced by MTTD and enhance the overall health and resistance of mango trees against MTTD infection.
Keywords
deviation from optimum percentage; foliar nutrition; mango sudden decline; nutrient imbalance; remobilization
Subject
Biology and Life Sciences, Horticulture
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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