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Control of potato diseases

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, Disease is one of the important factors affecting the yield and seed character of potato in winter. The main diseases and control methods of potato in winter in Yunnan Province are introduced as follows: virus disease control methods: selecting virus-resistant varieties and virus-free seed potatoes; pulling out diseased plants in the field; timely control of aphids. Fungal disease one is late blight. Control methods: selection of disease-resistant varieties and disease-free seed potatoes; timely removal of central diseased plants and intermediate ploughing and weeding; chemical control. The second is early blight. Control methods: selection of disease-resistant varieties; chemical control. Control methods of bacterial diseases and ring rot: selection

Disease is one of the important factors affecting the yield and seed character of potato in winter. The main diseases and control methods of potato in winter in Yunnan Province are introduced as follows:

Virus disease control methods: selection of virus-resistant varieties and virus-free seed potatoes; removal of diseased plants in the field; timely control of aphids.

Fungal disease one is late blight. Control methods: selection of disease-resistant varieties and disease-free seed potatoes; timely removal of central diseased plants and intermediate ploughing and weeding; chemical control. The second is early blight. Control methods: selection of disease-resistant varieties; chemical control.

Control methods of bacterial disease ring rot: select disease-resistant varieties and disease-free seed potatoes; remove diseased plants in time; carry out crop rotation and pay attention to the control of underground pests. Prevention and control methods of bacterial wilt: agricultural control is mainly: rational crop rotation. Select disease-free and disease-resistant varieties to prevent rotten potato from being mixed with fertilizer, apply more phosphorus and potassium fertilizer, remove weeds in the field, and find central diseased plants to be pulled out in time. Disinfect the disease hole with lime and drain the low-lying land in time: irrigate the root with 50% copper succinate wettable powder 500 times or 14% ammonia copper water 400 times, once every 7 to 10 days, continuously for 2 times. Control methods of soft rot; agricultural control measures include strengthening ploughing and cultivating soil before harvest and paying attention to field drainage; mature tubers avoid manual and mechanical damage in the process of harvest and shipment. The prevention and control of black shank disease can be controlled by seed dressing with 7.5kg/hm2 or Bengkejing solution, or foliar spraying 0.1% copper sulfate solution. To prevent and cure scab, 18% mancozeb powder can be used to treat seed potato or fumigate soil, or soak the seeds with unheated formalin 200: 250 for 20 minutes for 30 minutes, and remove them for 6 hours after soaking.

 
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