Pyrethroid repellent effect on to bees in sunflower culture (Helianthus annuus)

Authors

  • Augusta Carolina de Camargo Carmello Moreti Instituto de Zootecnia, Divisão de Zootecnia Diversificada, Seção de Apicultura, Nova Odessa, SP
  • Luiz Carlos Marchini Universidade de São Paulo, ESALQ, Departamento de Entomologia, Piracicaba, SP
  • Octavio Nakano Universidade de São Paulo, ESALQ, Departamento de Entomologia, Piracicaba, SP

Abstract

This research was carried out to observe the effect of some pyrethroid insecticides on bees. The experiments were set at the Department of Entomology of €œEscola Superior de Agricultura Luiz de Queiróz€, in Piracicaba, State of São Paulo, Brazil. Two experiments were set: 1. Six insecticides applied on the fiowers after 6 o€™clock pm at dosagens recommended for pest control (permethrin 75 ml/ha; deltamethrin 30 ml/100 litres; cypermethrin 125 ml/ha; fenvalerate 105 ml/ha; fenpropathrin 20 ml/100 litres; and esfenvalerate 40 ml/ha); 2. The insecticides permethrin, deltamethrin and cypermethrin appiied at double dosage early in the morning. The number of visits of bees on the flowers was observed during two minutes at three differents hours, before and after the insecticide applications. The statistical analysis of the results indicated that all the insecticides tested were repellent to the bees only for same hours.

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Published

2014-01-29

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Pyrethroid repellent effect on to bees in sunflower culture (Helianthus annuus). (2014). Bulletin of Animal Husbandry, 45(1), 157-163. http://bia.iz.sp.gov.br/index.php/bia/article/view/709

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