Nâng cao vốn từ vựng của bạn với English Vocabulary in Use từ mister-map.com.Học các từ bạn cần giao tiếp một cách tự tin.
Đang xem: Insecticide là gì
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.
Các quan điểm của các ví dụ không thể hiện quan điểm của các biên tập viên mister-map.com mister-map.com hoặc của mister-map.com University Press hay của các nhà cấp phép.
Insecticide treatments (pyrethroids and neonicotinoids) applied before collection of the spring sample may be responsible for such selection.
To enable measuring the effect of reduced borer densities on maize yield, the maize monocrop and all intercrops were grown with and without insecticide treatment.
No insecticides were applied to the permanent data trees and 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 to insecticides, for mulations and 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 stress 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 and crop mixture treatments, between leaves and tips and varieties.
Many smallholders do not use insecticides at all, so that they suffer significant pest-related yield losses.
These insecticide savings become even more pronounced when commercial product concentrations are converted into amounts of active ingredients.