Interaction between pesticides applied alone or in mixtures in corn

The objective of this work was to evaluate the selectivity of herbicides applied alone or in tank mix, and also of combinations of different classes of pesticides (fungicides, herbicides and insecticides) on corn. An experiment was installed in the 2017/18 crop to assess herbicide selectivity, and r...

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Bibliographic Details
Published in:Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes Pesticides, food contaminants, and agricultural wastes, 2021, Vol.56 (11), p.986-993
Main Authors: Galon, Leandro, da Silva, Maicon Rodrigues, de Oliveira Rossetto, Emanuel Rodrigo, da Silva, Alexandre Ferreira, Aspiazú, Ignacio, Favretto, Emanuel Luis, Brunetto, Leonardo, Pawelkiewicz, Renan, Forte, Cesar Tiago, Perin, Gismael Francisco
Format: Article
Language:English
Subjects:
Agricultural production
Cereal crops
combinations
Corn
Crop yield
Design of experiments
Evaluation
Experimental design
fungicide
Fungicides
Fungicides, Industrial
Grain
grain yield
Herbicide
Herbicides
Herbicides - toxicity
insecticide
Insecticides
Pesticides
Pesticides - toxicity
Phytotoxicity
Selectivity
tank mixture
Vegetables
Zea mays
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Summary:The objective of this work was to evaluate the selectivity of herbicides applied alone or in tank mix, and also of combinations of different classes of pesticides (fungicides, herbicides and insecticides) on corn. An experiment was installed in the 2017/18 crop to assess herbicide selectivity, and repeated in 2018/19. The second experiment aimed to assess the selectivity of mixtures of different classes of pesticides, and was installed only in 2017/18. The experimental design adopted in the tests was randomized blocks, with four replicates. In each trial, a total of 16 treatments were evaluated, plus a control. At 7, 14 and 21 days after the application of treatments the phytotoxicity to corn was evaluated and the yield components and grain yield were determined. Herbicides caused low levels of injury to the corn plants, with small variations in yield components, and affected crop yield differently. The mixtures of pesticides promoted low phytotoxicity, affected yield components inconsistently and caused changes in corn yield. Although these herbicides and other pesticides are registered for use in corn crops, application alone or in tank mix of certain molecules can cause losses in grain yield.
ISSN:0360-1234
1532-4109
DOI:10.1080/03601234.2021.2003146