Biopesticides are alternatives to synthetic ones, repel insects and control diseases in a sustainable way. The objective was to evaluate the efficiency and efficacy of a biopesticide. In apples in 2023 and walnut in 2024, both in Coahuila, Mexico. In 2023, with: A.- Without application and B.- With application of 2 L of biopesticide one liter at the beginning and the second 10 days later, with three repetitions. In Walnut A.- With synthetic insecticide and fungicide and B.- With the application of the biopesticide. The repellency index at 20 days after application (DDA) the control reached 5.3 and the biopesticide with 1 butterfly, the repellency index at 20 DDA, 0.39 and the effectiveness of the biopesticide was 75.3%. In walnut, the repellency of the synthetic was 0.25 at 20 DDA and of the biopesticide was 1.5. In apple tree diseases, the severity without application was 6.75 % and the biopesticide 1.67 %, in walnut with synthetic the severity was 2.0 % and the biopesticide 5.21, %, the effectiveness of the biopesticide was 61.6%. The repellency is less than one and the effectiveness is greater than 60% with Mexican standards.
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Environmental and Earth Sciences - Environmental Science
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