Data/hora: 08/06/2024 11:08:21

Provedor de dados: | Ciência e Agrotecnologia
País: | Brazil
Título: | Aerial, ground and chemigation spray deposition on corn for the control of spodoptera frugiperda (lepidoptera: noctuidae)
Autores: | Cunha,João Paulo Arantes Rodrigues da; Nascimento,Ana Paula de Castro.
Data: | 2013-04-01
Ano: | 2013
Palavras-chave: | Insecticide application technology; Fall armyworm; Chemigation; Sprayer.
Resumo: | Pesticides can be applied by aircraft, ground-sprayers or sprinkler irrigation. However, selecting the best option is complicated by the limited number of studies comparing these techniques. Thus, the objective of this work was to study the chlorpyrifos insecticide deposition applied by aircraft (30 L ha-1), tractor-mounted sprayer (200 L ha-1) and chemigation (70,000 L ha-1) for the control of Spodoptera frugiperda (J.E. Smith) in two corn (Zea mays L.) populations (70,000 and 100,000 plants ha-1). Active ingredient residue on the corn plant leaves was evaluated by gas chromatography, immediately and ten days after the treatments. Armyworm numbers in each plot and control were also evaluated. The experiment was set up in randomized blocks with four replications. Aerial and ground applications of chlorpyrifos led to greater active ingredient deposition in the leaves than chemigation. Neither plant population (70,000 and 100,000 plants ha-1) affected the insecticide deposition in the corn leaves. S. frugiperda control was similar for all three application methods. Chemigation, however, resulted in less deposition on the plants and consequently in a greater insecticide loss to the soil, which should be considered in environmental impact.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000200002
Editor: | Editora da Universidade Federal de Lavras
Relação: | 10.1590/S1413-70542013000200002
Formato: | text/html
Fonte: | Ciência e Agrotecnologia  v.37 n.2 2013
Fonte: | info:eu-repo/semantics/openAccess