Why Insecticide Use on Cotton is Declining!

摘要

Pesticides include insecticides, herbicides, fungicides, acaricides and other chemicals used to control insect pests and other pests. Insecticides for the control of arthropods and herbicides for the control of weeds are the two major groups of pesticides used in agriculture to control pests. No exact data are available to quantify the amounts of each insecticide or group of insecticides used on cotton versus other crops. This is the reason why different publications refer to different quantities, which in most cases range from too high to outright exaggeration. The other important factor that complicates the estimation of the quantity of insecticides sprayed per hectare to produce a kilogram of lint is the inability to pinpoint whether the author is referring to an active ingredient or to a formulated quantity of the insecticide. Sometimes, even the terms insecticide and pesticide are used interchangeably or insecticides+herbicides+ all other chemicals are lumped together as insecticides.