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For the rotation plots, sets of cards for all four insecticides used in the rotation schedule were prepared each week for the bioassays.
Each of the seasonal factors increased the impact of the insecticide because they lowered the population"s growth potential.
Insecticide treatments (pyrethroids & neonicotinoids) applied before collection of the spring sample may be responsible for such selection.
lớn enable measuring the effect of reduced borer densities on maize yield, the maize monocrop and all intercrops were grown with và without insecticide treatment.
No insecticides were applied to the permanent data trees và two guard rows on either side throughout the study.
The use of insecticides has been the major control strategy for cowpea and okra pests, especially in the tropics.
Three chapters are devoted lớn insecticides, for mulations và application methods, and problems associated with their use, particularly the development by pests of insecticide resistance.
For this reason, reliance on insecticides as the sole means of managing infestations was considered at best a short term solution.
The lack of early or mid-season insecticide bao tay in organic cotton may have favored naturally occurring biological control of cotton aphid16.
This suggests that additional organophosphate products were used by farmers at times of high insecticide use.
Comparisons were done across all insecticide và crop mixture treatments, between leaves & tips and varieties.
Many smallholders bởi not use insecticides at all, so that they suffer significant pest-related yield losses.
These insecticide savings become even more pronounced when commercial hàng hóa concentrations are converted into amounts of active ingredients.
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