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

doi:10.11923/j.issn.2095-4050.cjas15070020

Abstract

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.

CLC Number:

S565.1

References

[1] 马淑梅,李宝英.大豆疫霉根腐病生理小种鉴定结果初报[J].大豆科学,1999,18(2):151-153.
[2] 姜伊. 大豆根腐病主要致病菌种类及防控技术[D]. 哈尔滨: 黑龙江大学, 2014: 1-3.
[3] White,D.M.et al.Race of P.me.f.sp.glycinea on soybean in eastern Nebraska[J].Plant Disease,1983,67:1281-1284.
[4] 丁俊杰,马淑梅,申宏波,等. 大豆主要病害双抗种质鉴定初报[J]. 中国油料作物学报,2006,12(2): 54-158.
[5] 许修宏,吕慧颖,杨庆凯,等. 大豆疫霉根腐病抗源筛选[J].大豆科学,1999,18(2):147-150.
[6] Enkerli K, Haha M Q, Mims C W. Ultrastructure of compatible and incompatible interaction of soybean roots infected with the plant pathogenic oomycete Phytophthora sojae[J]. Canadian Journal of Botany.1997,75(9):1493 -1508.
[7] 申宏波,姚文秋,于咏梅,等.不同类型生物农药对大豆疫霉根腐病的防治效果[J]. 大豆科学, 2011,30(6)：1054-1056.
[8] 台连梅,范文艳.有机肥对连作大豆根腐病、生育及产量的研究[J].黑龙江八一农垦大学学报,1997,4:12-15.
[9] 刘惕若.25%甲霜灵种衣剂防治大豆疫霉根腐病效果研究[J].黑龙江八一农垦大学学报,2004,16(3)：1-4
[10] 左豫虎, 薛春生, 刘惕若,等. 杀菌剂对大豆疫霉菌生长的抑制作用[J]. 黑龙江大学自然科学学报, 2002,19(1):106-108.
[11] 邵见阳,马辉刚,苏铃. 辣椒疫霉病菌对内吸性杀菌剂抗药性研究[J].江西农业学报,1998,10(1)：46-50.
[12] 左豫虎,侯巨梅,康振生,等.大豆疫霉菌抗甲霜灵特性研究[J].菌物学报,2005,24(3)：422-428.
[13] Lazarovits G, Ward E W B, 1982. Relationship between localized glyceollin accumulation and metalaxyl treatment in the control ofphytophthora rot in soybean hypocotyls. Phytopathology, 72 (9): 1217~1221
[14] 杨泓威,易图永,雷颖, 等.丁子香酚对黄瓜疫霉菌的室内毒力测定[J]. 湖南农业科学,2012,(5):68-69.
[15] 李宝笃,沈崇尧.植物病原真菌对杀菌剂的抗性及对策[J].植物病理学报,1996,26(4)：294-296.