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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (4): 106-111.doi: 10.11924/j.issn.1000-6850.casb2022-0072

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Application Rates and Proportions of Organic Fertilizers: Control Effects on Three Diseases of Grain Pea

LI Yanlan1(), YANG Jincheng1(), JIN Hongyun2, LUO Zhimin3, LI Xiang1, LI Zaofu2, ZHANG Chunfan3, HU Xinzhou1, YU Zonghong3, LIU Jianjian1, GAO Shilan2, AN Zhengyun1, WANG Aiming4, CAI Shujiang1   

  1. 1Yuxi Academy of Agricultural Sciences, Yuxi, Yunnan 653100
    2Agricultural Technology Extension Station of Yimen County, Yimen, Yunnan 651100
    3Agricultural Technology Extension Station of Huaning County, Huaning, Yunnan 652800
    4Comprehensive Agricultural Service Center of Eshan County, Eshan, Yunnan 653200
  • Received:2022-02-11 Revised:2022-11-03 Online:2023-02-05 Published:2023-01-31

Abstract:

In order to explore the control effect of organic fertilizers with different application rates and proportions on common diseases of grain pea, a multi-level randomized block experiment was conducted, and the field control efficacy of organic fertilizer applied at sowing stage, and N and K water-soluble organic fertilizer or ammonium dihydrogen phosphate applied at seedling stage on fusarium wilt, powdery mildew and brown spot disease were studied. The results showed that combined application of 4500 kg/hm2 organic fertilizer as base fertilizer with N and K water-soluble organic fertilizer as topdressing had good control effect on fusarium wilt and brown spot disease of pea at middle and high altitudes, the highest control efficiency of fusarium wilt was 100%, the highest control efficiency of brown spot disease was 48.23%, but organic fertilizer with different application rates and proportions had no control effect on powdery mildew. The application of 4500-9000 kg/hm2 organic fertilizer as base fertilizer and 2 times of N and K water-soluble organic fertilizer as topdressing could increase the yield of grain pea, and the highest increase rate at high altitude was 25.55%, and the highest increase rate at middle altitude was 19.71%. According to the experiment results, the application of 4500 kg/hm2 organic fertilizer as base fertilizer and 2 times of water-soluble organic fertilizer as topdressing have the effect of disease control and yield increase.

Key words: organic fertilizer, grain pea, fusarium wilt, powdery mildew disease, brown spot disease, field control efficacy