How to prevent and control lettuce soft rot? These methods you need to master
The disease mostly infects from the petioles at the root crown or the base of the roots, initially appearing as water-soaked yellow-brown soft rot with a foul odor. Sometimes soft rot starts from the edges of the outer leaves or the top of the head, and in severe cases the root pith and head rot. The pathogen spreads through watering or insects, invading through wounds and cracks in the plant. The optimum temperature for disease occurrence is 2...
The disease mostly infects from the petioles at the root crown or the base of the roots, initially appearing as water-soaked yellow-brown soft rot with a foul odor. Sometimes soft rot starts from the edges of the outer leaves or the top of the head, and in severe cases the root pith and head rot. The pathogen spreads through watering or insects, invading through wounds and cracks in the plant. The optimum temperature for disease occurrence is 25°C to 30°C.
Control methods: Prevent heavy flooding irrigation and water accumulation in the beds, pay attention to ventilation and moisture removal, promptly remove diseased plants, and control watering appropriately. In the early stage of the disease, spray 72% Xinzhiromycin wettable powder or agricultural streptomycin sulfate wettable powder at 4000 to 5000 times dilution, or 50% DT wettable powder at 500 times dilution, or 47% Jiaruinong wettable powder at 800 times dilution, or 77% Keshade soluble micro-powder at 500 times dilution. Generally spray once every 7 to 10 days, for 2 to 3 consecutive sprays.