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Research on Formulation and Biological Activity of 70% Imidacloprid Water Dispersing Granule

Author: LiWenFeng
Tutor: WuGang
School: Fujian Agriculture and Forestry University
Course: Pesticides
Keywords: Imidacloprid Water dispersible granules Aphid (Brevicoryne brassicae) Indoor virulence Lethal concentration
CLC: S482.3
Type: Master's thesis
Year: 2010
Downloads: 111
Quote: 0
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Abstract


In this paper, a water dispersible granule formulation consisting of 70 % imidacloprid and quality testing analysis methods to determine the proportion of 70% imidacloprid water dispersible granule composition and various components of the aphids (Lipaphis erysimi) indoor virulence , and through indoor virulence test to determine the biological activity of this recipe . The main findings are as follows : by a variety of additives, as well as carrier screening wetting agents, dispersants , binders, disintegrating agents , and ultimately determine the 70% imidacloprid water dispersible granule composition and content were imidacloprid original drugs ( 72.9%) , a wetting agent , 20 ( 2.5%) , a dispersant the -25 or dispersing agents -30 (5%) , disintegrating agents ( NH4 ) 2SO4 ( 3 %) , the binder of polyethylene glycol ( 2%), the carrier ( carrier 3 : kaolin = 1:4 ) (14.6%) . Research on the recipe quality testing analysis methods to determine the active ingredient content of the formulations was 71.15 percent , 90.45 percent suspension rate , thermal storage experimental results show that the decomposition rate of heat storage before and after the effective ingredients 1.28 % ≤ 1.5 % suspension rate ≥ 90 %, indicating that the present formulations have a good heat storage stability . Use of imidacloprid four formulations ( 10% imidacloprid WP , Imidacloprid Le Meridien , water dispersible granules , homemade 70 % imidacloprid water dispersible granules containing synergist 70 % imidacloprid water dispersible granules ) indoor toxic to the aphids test results show that 70 % imidacloprid homemade water dispersible granules of biological activity and the commercialization of 10% imidacloprid WP and imidacloprid water dispersible granules is not much difference compared to the Le Meridien , on this basis , greatly improve the efficacy homemade imidacloprid 70% water dispersible granules added synergist . Four different formulations of imidacloprid turnip aphids have a strong virulence , their lethal concentration of 1.848mg / L, 1.818mg / L, 1.934mg / L and 0.307mg / L, .

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CLC: > Agricultural Sciences > Plant Protection > Pesticide ( chemical control ) > Various pesticides > Pesticides
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