Application of a Leaf Covering Agent Controlling Soybean Frogeye Leaf Spot

doi:10.11923/j.issn.2095-4050.cjas20190800175

Abstract

Abstract:

In order to reduce the dosage of fungicide in spring soybean production in northeast China, a leaf covering agent is used to control the soybean frogeye leaf spot. The control is spraying fungicide with unmanned aerial vehicle, and the blank control is spraying nothing. The result show that leaf covering agent could effectively prevent and control soybean frogeye leaf spot and increase yield. The control effect and yield increasing rate is 72.50% and 16.00% respectively. Compared with the application of spraying fungicide, the application of leaf covering agent is more consistent with China’s current pesticide application policy of reducing application and increasing efficacy.

Key words: Covering Agent, Soybean Frogeye Spot, Control Efficiency, Reduced Application and Increased Efficacy of Pesticides, Fungicide

CLC Number:

S435.29

Yang Xiaohe, Wang Ping, Gu Xin, Yao Liangliang, Gao Xuedong, Zhang Maoming, Liu Wei, Shen Hongbo, Zhang Yu, Ding Junjie. Application of a Leaf Covering Agent Controlling Soybean Frogeye Leaf Spot[J]. Journal of Agriculture, 2020, 10(11): 11-14.

Figures/Tables 3

References 25

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处理	含量（剂型）	施用方法	使用量/(kg/hm²)	来源
遮盖剂	粉剂,由秸秆超微粉、褐煤超微粉、黏土粉和碳粉经搅拌机搅拌均匀而成	喷粉机人工喷施	75	黑龙江省农业科学院佳木斯分院
多菌灵	50%可湿性粉剂	无人机喷施	1.5	江苏三山农药有限公司

处理	含量（剂型）	施用方法	使用量/(kg/hm²)	来源
遮盖剂	粉剂,由秸秆超微粉、褐煤超微粉、黏土粉和碳粉经搅拌机搅拌均匀而成	喷粉机人工喷施	75	黑龙江省农业科学院佳木斯分院
多菌灵	50%可湿性粉剂	无人机喷施	1.5	江苏三山农药有限公司

处理	药前病情指数	喷施后7 d		喷施后14 d		喷施后21 d
处理	药前病情指数	病情指数	防治效果/%	病情指数	防治效果/%	病情指数	防治效果/%
遮盖剂	1.37	3.07	63.58aA	6.27	66.56aA	9.44	72.50aA
多菌灵	1.32	3.68	54.76bA	6.80	62.44bA	9.70	70.79aA
CK	1.51	9.27		20.61		37.74

处理	药前病情指数	喷施后7 d		喷施后14 d		喷施后21 d
处理	药前病情指数	病情指数	防治效果/%	病情指数	防治效果/%	病情指数	防治效果/%
遮盖剂	1.37	3.07	63.58aA	6.27	66.56aA	9.44	72.50aA
多菌灵	1.32	3.68	54.76bA	6.80	62.44bA	9.70	70.79aA
CK	1.51	9.27		20.61		37.74

处理	小区产量/(kg/35 m²)	增产/%	显著性
处理	小区产量/(kg/35 m²)	增产/%	0.05	0.01
遮盖剂	9.50	16.00	a	A
多菌灵	9.22	12.58	b	A
CK	8.19