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《Anhui Agricultural Science Bulletin》 2018-11
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Application of Biological Seed Coating Agent for Soybean Phytophthora Root Rot

Gong Hairen;College of Life Science and Technology,Heilongjiang Bayi Agricultural University;  
The biological seed coating agent contains the plant activators,plant regulators,and the biocontrol bacteria M1-4 with the inhibitory activity against Phytophthora sojae,and the disease resistance and growthpromoting effects of the agent are measured by pot experiments and field trials.The results showed that bio-control bacteria M1-4 was stable in seed coating for 56 d.Pot experiment showed that the agent could significantly reduce the disease index,and the efficiency of control P.sojae was 75.2%.Meanwhile,the freshweight of above ground and underground increased by 87% and 125%,respectively,and it had significanteffect of growth promoting.Field experiments showed that the agent can reduce the seedling height,andstronger seedlings. The fresh weight of leaf and petiole significantly increase in the drum stage,and leafarea was significantly higher than that of the control in the early flowering,flowering,pod and drum stage.The application of the agent in Baoquanling and Lindian showed that the incidence of P.sojae reduces by16.61% and 22.48%,and the number of dead seedlings reduces by 3.59% and 6.75%,and the yield increases by 30.01% and 32.66%,respectively.It shows that the biological seed coating agent has a significant control effect on soybean root rot and can effectively improve soybean yield.
【Fund】: 黑龙江省大学生创新创业训练计划重点项目(201710223059);; 大庆市指导性科技计划项目(zd-2017-30);; 国家自然科学基金项目(31271652)
【CateGory Index】: S435.651
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