Chemical control of bean wilt
At the initial stage of the disease, 50% carbendazim wettable powder 1000 times or 10% Shuangxiaoling water agent 1000 times or 75% methyl topiramate wettable powder 1000 times, 50 to 150g per plant, once every 7 to 10 days, 2 to 3 times in a row. Can also be 50% carbendazim wettable powder 500 grams mixed with 200 kg of dry soil, ditch applied to the sowing line, 200 kg per mu.
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Formula fertilization Technology of Bean
1. The main symptoms are leaves, stems and pods. At the initial stage of the disease, there were purple-brown spots on both sides of the leaf, and after enlargement, the disease spot was nearly round and dark brown, with a diameter of 1cm, the edge was not obvious, and there was dense soot mold on the surface of the disease spot when it was wet (especially on the back of the leaf). In severe cases, it causes early defoliation, leaving only young leaves at the top.
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Identification of bean Fusarium wilt
When the symptomatic plant occurs, it starts from the lower leaves. Irregular waterlogged disease spots appeared at the edge of the leaf, especially at the tip of the leaf, then the leaf yellowed and died, and gradually developed to the upper leaf, and finally the whole plant wilted and died. The cortex of the rhizome of the diseased plant often cracked, the vascular bundle tissue turned brown, and powder appeared on the surface of the diseased part when the humidity was high.
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