Effect of seed treatment with insecticides on the control of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in soybean

Fall armyworm is one of the main insect pests in Brazil. Thus, the present work aimed to evaluate the seed treatment effect on the control of Spodoptera frugiperda in initial infestations of soybean crops. The experimental design was completely randomized with four replicates of six insecticide trea...

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Bibliographic Details
Published in:Arquivos do Instituto Biológico (São Paulo) 2019-01, Vol.86, p.1
Main Authors: Triboni, Yago Barros, Del Bem, Luciano, Raetano, Carlos Gilberto, Negrisoli, Matheus Mereb
Format: Article
Language:eng ; por
Subjects:
Caterpillars
Consumption
Crop development
Crops
Design of experiments
Experimental design
Fipronil
Imidacloprid
Insecticides
Insects
Leaf area
Leaves
Lepidoptera
Noctuidae
Pesticides
Pests
Seed treatments
Seedlings
Soybeans
Spodoptera frugiperda
Thiamethoxam
Thiodicarb
Thiophanate
Thiophanate-methyl
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Summary:Fall armyworm is one of the main insect pests in Brazil. Thus, the present work aimed to evaluate the seed treatment effect on the control of Spodoptera frugiperda in initial infestations of soybean crops. The experimental design was completely randomized with four replicates of six insecticide treatments applied through seed treatment: imidacloprid plus thiodicarb at the dose of 52.5 plus 105 g a.i. (active ingredient) 100 kg-1 of seed (Cropstar® 0.350 L 100 kg-1 of seed); thiamethoxam at 105 g a.i. 100 kg-1 of seed (Cruiser 350 FS® 0.3 L 100 kg-1 of seed); chlorantraniliprole at 62.5 g a.i. 100 kg-1 of seed (Dermacor® 0.1 L 100 kg-1 of seed); cyantraniliprole at 120 g a.i. 100 kg-1 of seed (Fortenza 600 FS® 0.2 L 100 kg-1 of seed); fipronil plus pyraclostrobin and thiophanate-methyl 50 + 5 + 45 g a.i. 100 kg-1 of seed (Standak Top® 0.2 L 100 kg-1 of seed), and a control treatment. The experiment was carried out in a greenhouse. Diamide insecticides (chlorantraniliprole and cyantraniliprole) presented the best results among all treatments, with lower consumption of the treated leaves by the caterpillars and greater control efficacy of this insect. We verified that seed treatment is a viable alternative for controlling S. frugiperda at the beginning of crop development, when the caterpillar presents the behavior of cutting the seedlings and/or the consumption of leaf area, causing a reduction in the plant population and a consequent yield loss.
ISSN:0020-3653
1808-1657
DOI:10.1590/1808‑1657000332018