Malathion


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to Malathion: permethrin, diazinon

Malathion

(măl'əthī`ŏn): see insecticideinsecticides,
chemical, biological, or other agents used to destroy insect pests; the term commonly refers to chemical agents only. Chemical Insecticides

The modern history of chemical insecticides in the United States dates from 1867, when Paris green proved
..... Click the link for more information.
.

malathion

[‚mal·ə′thī‚än]
(organic chemistry)
C10H19O6PS2 A yellow liquid, slightly soluble in water; malathion is the generic name for S-1,2-bis(ethoxycarbonyl)ethyl O, O-dimethylphosphorodithioate; used as an insecticide.
References in periodicals archive ?
En la Tabla I se aprecia como efecto agudo (dia 1) de la administracion de malathion un aumento estadisticamente significativo en las celulas espermatogoniales del tipo B y en paquiteno, efecto que igualmente se observa en espermatidas redondas y alargadas por tubulos.
It was not possible to calculate this rate for the aphids exposed to malathion because all the individuals died within 24 hours.
Malathion, an organophosphorus pesticide for a large variety of pests, has been widely used in agriculture [1].
To malathion, it was resistant in 14 districts, verification required category in 10 districts and susceptible in eight districts.
For linearity study, bean samples were spiked with standard solutions of the analytes: diazinon (0.24-8.56 [micro]g [g.sup.-1]), ethion (0.86-13.67 [micro]g [g.sup.-1]), fenitrothion (0.56 [micro]g [g.sup.-1], internal standard), malathion (0.52-18.87 pg [g.sup.-1]), methyl parathion (0.23-8.14 [micro]g [g.sup.-1]) and methyl pirimiphos (0.28-10.25 [micro]g [g.sup.-1]).
Malathion and its cousins, which have been around for almost 60 years, are very hazardous to humans as well as insects.
trichlorfon (98%) Jiangsu Anpon China malathion (95%) lambda-cyhalothrin (98%) Jiangsu Huangma Agrochemicals China bifenthrin (95%) methomyl (93%) Agro-Care Chemical China and spinosad (95%) Shenzhen Crop Star Chemical China were used in different concentration prepared in acetone (98%) Riedel -de HaAn Germany for present study.
Malathion is used for agricultural purposes to kill and control insects on crops and in gardens.
For the measurement of rate constants of inhibition ([k.sub.i]), esterases enzyme activity was inhibited with 2 mM malathion, parathion, or trichlorfon concentrations or 4 mM methomyl concentration resulting in an inhibition of 83-99% of control activity.
In a study on effects imparted to immune system function, decreases in hemocyte counts were recorded in cockroaches that were exposed to malathion (Saxena & Saxena 1985) and crickets that were treated with parathion (Patton 1961).
rubrocinctus the concentration ranges of the second assay varied between 0.0001 and 1 [micro]g per mL for spinosad, and between 4.10 to 1,000 [micro]g per mL for malathion and [alpha]-cypermethrin.
We used a bacterial consortium composed of Pseudomonas sp and Enterobacter sp isolated samples of cultivation plots in Los Mochis-Sinaloa (Mexico), the isolates showed metabolic activity and resistance against carbofuran, malathion and 2,4-D (9).