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2014•Modern AgrochemicalsRequires access

Study on Control Effects of Three Pymetrozine Formulations Against Brown Planthopper

Chen Chan-jua

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Abstract

In order to find out control effects of pymetrozine formulations on brown planthopper and their applications, field trials were carried out in 2013. The results showed that the control effects of pymetrozine 50% WG 300 g/hm2, pymetrozine 25% WP 600 g/hm2 were above 88% on the 28 th day after spraying, and had significantly differences with pymetrozine 50% WP. And the persistent efficacy periods of the two formulations were longer than that of pymetrozine 50% WP.

About this research paper

What this paper is about

In order to find out control effects of pymetrozine formulations on brown planthopper and their applications, field trials were carried out in 2013. The results showed that the control effects of pymetrozine 50% WG 300 g/hm2, pymetrozine 25% WP 600 g/hm2 were above 88% on the 28 th day after spraying, and had significantly differences with pymetrozine 50% WP. And the persistent efficacy periods of the two formulations were longer than that of pymetrozine 50% WP.

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Available abstract

In order to find out control effects of pymetrozine formulations on brown planthopper and their applications, field trials were carried out in 2013. The results showed that the control effects of pymetrozine 50% WG 300 g/hm2, pymetrozine 25% WP 600 g/hm2 were above 88% on the 28 th day after spraying, and had significantly differences with pymetrozine 50% WP. And the persistent efficacy periods of the two formulations were longer than that of pymetrozine 50% WP.

Key concepts: Brown planthopper, Planthopper, Toxicology, Horticulture, Biology, Botany, Biochemistry, Hemiptera

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