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16% Avermectins Chlorpyrifos Capsule Suspension for Seed Treatment Firstly Developed in China
On Nov 14, 2014，the agricultural technology achievement transformation fund project of “Industrialization and Popularization of Avermectins•Chlorpyrifos Capsule Suspension” chaired by Institute of Plant Protection successfully got approved by Agricultural Science and Technology Development Center of Ministry of Agriculture.
A capsule formulation, 16% avermectins•chlorpyrifos capsule suspension for seed treatment, was developed in the project. “it is the first industrialized product encapsulating a mixture of avermectins and chlorpyrifos within a melamine-formaldehyde resin,” associate professor Daibin Yang, the principle investigator of the project said. “The prepared microcapsules have a narrow size distribution and high encapsulation efficiencies to encapsulate active ingredients. Field experiments demonstrated that this capsules suspension is safe to the emergence of peanut seeds.”
On the base of identifying the key parameters of industrialization, a production line in scale of an annual output of 1000 tons to manufacture 16% avermectins•chlorpyrifos capsule suspension was built. In this project research, 16 tons of formulation were manufactured and sold out. The average diameter of the mircocapsules was 2.4 μm, and the encapsulation efficiency was in range of 95% ～ 98% for industrialized products.
The SEM image of microcapsules containing avermectins and chlorpyrifos
A capsule formulation, 16% avermectins•chlorpyrifos capsule suspension for seed treatment, was developed in the project. “it is the first industrialized product encapsulating a mixture of avermectins and chlorpyrifos within a melamine-formaldehyde resin,” associate professor Daibin Yang, the principle investigator of the project said. “The prepared microcapsules have a narrow size distribution and high encapsulation efficiencies to encapsulate active ingredients. Field experiments demonstrated that this capsules suspension is safe to the emergence of peanut seeds.”
On the base of identifying the key parameters of industrialization, a production line in scale of an annual output of 1000 tons to manufacture 16% avermectins•chlorpyrifos capsule suspension was built. In this project research, 16 tons of formulation were manufactured and sold out. The average diameter of the mircocapsules was 2.4 μm, and the encapsulation efficiency was in range of 95% ～ 98% for industrialized products.
The SEM image of microcapsules containing avermectins and chlorpyrifos
For popularization of this capsule suspension for seed treatment, four demo bases were established in the province of Shandong, Henan and Hebei, respectively. The demo area was above 3000 hectare, and the bio-efficacy reached more than 80% against white grubs during the entire peanut growing season after treatments with a single dose of this product in the last few years. Thus remarkable social ecological and economic advantages were proved during product extension.
By Daibin Yang
dbyang@ippcaas.cn
dbyang@ippcaas.cn
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