Fungicides on Soybean in Northeast China: Reducing Application and Increasing Efficiency

doi:10.11923/j.issn.2095-4050.cjas20190400008

Abstract

Abstract:

The study aims to solve the problems of disordered selection of fungicides, excessive dosage and improper application methods in soybean production areas in northeast China. In 2018, 3 treatments were conducted in the field. The treatment of reducing fungicide application and increasing efficiency was based on planting disease-resistant varieties, and using rhizobium agent and Bacillus subtilis wettable powder to control soybean root rot, and leaf covering powder to control frogeye leaf spot, and large-area comparison tests were carried out between the above mentioned treatment and conventional chemical treatment and non-administration treatment. Random point survey was used to investigate soybean root rot index, frogeye leaf spot index and yield of soybean, then, the benefits were calculated. The results showed that: the disease indexes of root rot and frogeye leaf spot under reducing fungicide application and increasing efficiency were the lowest, 17.96% and 27.18%, respectively; the control effect of root rot was 64.08%, which was extremely superior to that of chemical treatment; the control effect of soybean frogeye leaf spot was 72.97%, which was significantly better than that of chemical treatment; the yield of reducing fungicide application and increasing efficiency reached 3914.40 kg/hm², which was significantly higher than that of the control treatment, and the final benefit was 1067.70 Yuan more. The reducing fungicide application and increasing efficiency could not only reduce the dosage, but also increase the yield and income, and the study provides a research foundation for realizing the zero growth of fungicide in 2020.

Key words: Fungicide, Soybean Root Rot, Frogeye Leaf Spot, Rhizobium Inoculum, Resistant Varieties, Reducing Application and Increasing Efficiency

CLC Number:

S435.29

Gu Xin, Yang Xiaohe, Yao Liangliang, Gao Xuedong, Zhang Maoming, Liu Wei, Qiu Lei, Shen Hongbo, Ma Ying, Ding Junjie. Fungicides on Soybean in Northeast China: Reducing Application and Increasing Efficiency[J]. Journal of Agriculture, 2020, 10(8): 28-32.

Figures/Tables 5

References 26

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药剂名称	有效成分含量	施用剂量及方法	生产厂家
赢丽·星碳菌剂	2亿芽孢/g	20 g/kg种子拌种	沈阳中赢农业科技有限公司
枯草芽孢杆菌可湿性粉剂	1000亿芽孢/g	300 g/hm²喷淋茎基部	德强生物股份有限公司
叶面遮盖粉剂	17%	75 kg/hm²喷施	黑龙江省农业科学院佳木斯分院
多菌灵可湿性粉剂	50%	1500 g/hm²喷施	浙江新安化工集团股份有限公司
多·福·克悬浮种衣剂	30%	20 g/kg种子包衣	黑龙江省哈尔滨龙志农资化工有限公司

药剂名称	有效成分含量	施用剂量及方法	生产厂家
赢丽·星碳菌剂	2亿芽孢/g	20 g/kg种子拌种	沈阳中赢农业科技有限公司
枯草芽孢杆菌可湿性粉剂	1000亿芽孢/g	300 g/hm²喷淋茎基部	德强生物股份有限公司
叶面遮盖粉剂	17%	75 kg/hm²喷施	黑龙江省农业科学院佳木斯分院
多菌灵可湿性粉剂	50%	1500 g/hm²喷施	浙江新安化工集团股份有限公司
多·福·克悬浮种衣剂	30%	20 g/kg种子包衣	黑龙江省哈尔滨龙志农资化工有限公司

处理	调查总株数/株	各级别发病株数						病情指数/%	防效/%
处理	调查总株数/株	0	1	2	3	4	5	病情指数/%	防效/%
1	250	101.17	86.20	52.55	7.38	2.48	0.22	17.96aA	64.08aA
2	250	80.17	75.25	59.35	24.38	10.33	0.52	24.88bB	50.23bB
3(CK)	250	22.44	32.55	74.28	62.24	35.38	23.11	49.99cC	—

处理	调查总株数/株	各级别发病株数						病情指数/%	防效/%
处理	调查总株数/株	0	1	2	3	4	5	病情指数/%	防效/%
1	250	101.17	86.20	52.55	7.38	2.48	0.22	17.96aA	64.08aA
2	250	80.17	75.25	59.35	24.38	10.33	0.52	24.88bB	50.23bB
3(CK)	250	22.44	32.55	74.28	62.24	35.38	23.11	49.99cC	—

处理	调查总株数/株	药前基数						病指/%	末次药后28 d发病级别调查结果						病指/%	防效/%
处理	调查总株数/株	0	1	2	3	4	5	病指/%	0	1	2	3	4	5	病指/%	防效/%
1	250	249.55	0.25	0.20	0.00	0.00	0.00	0.05	75.00	76.35	52.34	30.25	12.35	3.71	27.18aA	72.97aA
2	250	249.60	0.15	0.25	0.00	0.00	0.00	0.05	64.23	55.36	58.58	42.22	20.23	9.38	34.16bA	66.03bA
3(CK)	250	249.75	0.25	0.00	0.00	0.00	0.00	0.02	52.34	65.33	35.35	53.15	31.23	12.60	38.67bB	—