Crops ›› 2018, Vol. 34 ›› Issue (6): 154-157.doi: 10.16035/j.issn.1001-7283.2018.06.024

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Control Efficiency of Several Biological Pesticides on Mung Bean Leaf Spot Disease

Liu Zhenxing1,Zhou Guimei1,Chen Jian1,Zhao Hui2   

  1. 1 Tangshan Academy of Agricultural Sciences, Tangshan 063001, Hebei, China
    2 Agriculture and Animal Husbandry Bureau of Leting County, Hebei 063604 ,Tangshan, China
  • Received:2018-03-02 Revised:2018-03-27 Online:2018-12-15 Published:2018-12-06

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Abstract:

In this study we investigated the control efficiency of six different biological pesticides on mung bean resistance to leaf spot disease under field experiments. The pesticides included 100 billion CFU/g bacillus subtilis, 300 million CFU/g trichodema harzianum, 200 million CFU/g Ningdun NO.1, 0.3% eugenol, 1% osthole and 10% pohyoxin. The results showed that all biological pesticides had certain inhibition effects on mung bean leaf spot disease, which were 72.58%, 63.27%, 77.53%, 58.64%, 72.60% and 62.37%, respectively. The control efficiencies were significantly different with each other. The control efficiencies of biological pesticides were significantly lower than the chemical pesticide 430g/L tebuconazole SC (85.22%). The pesticide 200 million CFU/g Ningdun NO.1 EW was the ideal biological pesticide to control mung bean leaf spot disease. Applying the biological pesticides could improve the yield performance to some extent although the yield difference between the non-disease-infected and disease-infected conditions had not reached a significant level.

Key words: Mung bean, Leaf spot disease, Biological pesticide, Control efficiency

Table 1

Control efficiency of different treatments on mung bean leaf spot disease"

处理
Treatment		 施药前病情指数
Disease index before application		 第1次施药After first application 第2次施药After twice application
病情指数
Disease index		 病情指数增长率(%)
Disease index growth		 防治效果(%)
Control efficiency		 病情指数
Disease index		 病情指数增长率(%)
Disease index growth		 防治效果(%)
Control efficiency
T1 1.33 3.33 150.0 58.12c 5.44 63.30 72.58c
T2 1.32 4.22 219.9 42.8d 7.36 74.22 63.27d
T3 1.34 2.67 99.0 61.43b 5.04 88.91 77.53b
T4 1.31 5.33 307.1 39.24e 7.76 45.48 58.64e
T5 1.33 3.11 133.3 58.30c 5.42 74.22 72.60c
T6 1.32 4.89 270.4 41.98de 7.47 52.71 62.37d
CK1 1.31 7.33 459.8 - 12.77 74.14 -
CK2 1.32 2.00 51.5 72.92a 3.48 74.22 85.22a

Table 2

Impacts of different treatments on main characters and yield of mung beans"

处理
Treatment		 株高(cm)
Plant height		 主茎节数
Nodes of main stem		 主茎分枝
Branches of main stem		 单株荚数
Pods per plant		 单荚粒数
Seeds per pod		 百粒重(g)
100-seed weight		 产量(kg/hm2)
Yield
T1 74.5 14.4 3.4 23.7 10.9 6.2 1 501.5a
T2 77.2 14.2 3.6 23.7 10.1 6.0 1 480.5a
T3 75.1 14.8 3.6 25.2 10.0 6.4 1 521.0a
T4 78.1 14.2 3.3 22.8 10.8 6.2 1 467.0a
T5 75.3 13.6 3.6 25.2 11.1 6.2 1 495.5a
T6 79.4 14.0 3.4 22.6 11.2 6.4 1 480.5a
CK1 75.6 13.4 3.3 22.5 10.1 6.4 1 458.0a
CK2 79.2 15.0 3.6 24.8 10.4 6.2 1 530.0a
平均Average 76.8 14.2 3.5 23.8 10.6 6.3 1 491.80
标准差SD 1.94 0.55 0.14 1.14 0.48 0.14 25.16
变异系数CV(%) 2.52 3.84 4.00 4.78 4.57 2.26 1.69
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