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Journal of Agriculture ›› 2016, Vol. 6 ›› Issue (3): 12-15.doi: 10.11923/j.issn.2095-4050.cjas15070020

Special Issue: 油料作物

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Control Efficiency of a New Type Controlled-release Metalaxyl Granule on Main Pathogenic Bacteria of Root Rot of Soybean

  

  • Received:2015-07-30 Revised:2015-09-09 Accepted:2015-09-22 Online:2016-03-28 Published:2016-03-28

Abstract: In order to control soybean root rot in the whole growth period of soybean, indoor mycelial growth inhibition test was conducted using a new type controlled- release metalaxyl granule to control the main pathogens of soybean root rot: Phytophthora sojae and soybean Fusarium in 2014. At the same time, a field experiment of the lasting period and the control effect of the new type controlled-release metalaxyl granule was carried out. The results showed that the inhibition rate of indoor test was the best, the EC50 to P. sojae was 0.364 and the EC50 to Fusarium was 0.5800, which were all the lowest. And the field experiment showed that the controlled-release metalaxyl granule had the best field control effect among the 5 kinds of bactericides. It could prevent the soybean root rot in the late growth stage. The new pesticide was an environmental friendly and high-efficiency agent, which laid a foundation for the prevention and control technology.

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