2006•Unpublished venueRequires access
Efficacy of spinosad for insect management in farm stored maize.
Dirk E. Maier, Klein E. Ileleji, D. A. Szabela, I. Lorini, B. Bacaltchuk, H. Beckel, D. Deckers, E. Sundfeld, J. P. dos Santos, J. D. Biagi, J. C. Celaro, L. R. D. Faroni, L. de O. F. Bortolini, M. R. Sartori, M. C. Elias, R. N. C. Guedes, R. G. da Fonseca, V. M. Scussel
Open publisher page 4 citations
Abstract
The effectiveness of spinosad and pirimiphos-methyl (Actellic) against key stored grain insects during on-farm maize storage was determined. Maize stored in 12.5 t capacity pilot bins and 112.5 t capacity elevator bins were treated with either 1 mg/kg spinosad, 4 mg/kg pirimiphos-methyl (Actellic), and combination of 1 mg/kg spinosad + 4 mg/kg Actellic in addition to control. Changes in residue levels of spinosad and pirimiphos-methyl (Actellic) during on-farm storage were also determined. The number of maize weevils and other injurious insects were not significantly different among the treatments. No substantial insect pressures and grain quality deterioration was observed even for untreated maize with less than 1 maize weevil found per kg of sample. Residue levels of spinosad and pirimiphos-methyl decreased by about 20 % and 15 % during Year 1, 36 % and 72 % between Years 1 and 2, and 0.01 loss and 36 % during Year 2 summer storage. Key words: stored grain, post harvest, residual insecticides, protectants, insects, efficacy, grain quality.