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Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (31): 300-303.doi: 10.11924/j.issn.1000-6850.2014-1379

Special Issue: 水稻

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Effects of Four Pesticides on Yield and the Occurrence Degree of the Rice False Smut

  

  • Received:2014-05-14 Revised:2014-05-14 Accepted:2014-06-17 Online:2014-11-20 Published:2014-11-20

Abstract: In order to explore the relationship of the sowing period, the occurrence degree of rice false smut and control pesiticides, and choose suitable sowing period and effective pesticide, a split plot was designed. Four pesticides, namely Amure, Jingangmyc, ketotriazole and propiconazole were applied to control rice false smut at different sowing time as April 26th, May 4th and May 13th. The results showed that the occurrence of rice false smut increased and the yield of rice decreased with the delay of the sowing period. But the false smut of rice occurrence was more lower and the yield was more higher when sowing time was April 26th and May 4th , and Amure, Jingangmyc were applied to control rice false smut. The theoretical yield per hectare was 9.05% and 13.23% higher than that without using pesticide respectively. The actual yield per hectare was 9.95% and 13.12% higher than that without using pesticide. The conclusion: early sowing can reduce and control the occurrence of rice false smut. Amure and Jingangmyc that applied to control rice false smut at sowing period April 26th-May 4th can increase the yield.