An insecticide is a pesticide whose purpose is to kill or to prevent the multiplication of insects. Insecticides are very widely used in agriculture, as well as in people's dwellings and workplaces. The use of insecticides is one of the major causal factors behind the increase in agricultural ...
The examples describe the preparation of (1) a tetrachlorotetrahydrothiophene - 1,1 - dioxide by chlorinating 3 - chloro - 2,3 - dihydrothiophene, -1,1-dioxide in CHCl3 and CCl4; (2) 2,3,4,5-tetrachlorotetrahydrothiophene - 1 - monoxide by oxidizing tetrachlorotetrahydrothiophene with H2O2 ...
neonicotinoid, any of a class of syntheticsystemicinsecticidesthat are chemically related tonicotine. Neonicotinoids are used especially inagriculturetocontrol destructive pestssuch asaphidsandmites. Since their introduction in the late 1980s, the chemicals have become the most widely used pesticides in th...
Examples of plants whose content of botanical insecticides can be tapped using the above methods are given. A number of possible avenues for enhancing the institutionalization of use of botanical insecticides among resource-poor farmers and the future role of botanical insecticides in pest management ...
pyrethroid resistance in malaria vectors can be compounded by the use of the same insecticide class in agriculture17,18. Likewise, in northern Argentina and Bolivia, resistance to pyrethroids in the Chagas disease vectorTriatoma infestanswas linked to both vector control and the indoor use of the ...
S. Dept. of Agriculture, ethyl and methyl thiocyanates were.tried out as fumigants but their offensive odor, volatility and irritant action render them unsuited as contact and household insecticides. We have found that the higher esters, starting with the butyl ester in contrast to the lower ...
Home > Section > Chapter Stenersen, J. Pesticide Science 10(1): 66-74 1979 10.1002/ps.2780100109 000590396 Article emailed within 0-6 h Buy Now for$19.90 Payments are secure & encrypted Abstract
controlling animal pests, in particular insects, arachnids, helminths, nematodes and molluscs, which are encountered in agriculture, in horticulture, in animal husbandry, in forests, in gardens and leisure facilities, in the protection of stored products and of materials, and in the hygiene sector....
Control of several of these species is of great economic importance in agriculture. For example, Spodoptera exigua is commonly known as beet armyworm and is quite injurious on cotton and is not controlled in Bt cotton. This invention unexpectedly finds that substituted benzoylureas of structural ...
Especially advantageous reaction conditions can be seen from the examples. Unless otherwise specified, the starting materials mentioned hereinabove and hereinbelow, which are used for the preparation of the compounds of formula I or, where appropriate, the tautomers thereof, in each case in free ...