How to prevent and control the rotten pepper fruit caused by many reasons

Rotten pepper fruit

First, pepper blight: stem disease spots often occur in decentralized places, first water-immersed spots, dark green, then dark brown, cortical soft rot, branches and leaves above the disease wilt and die, when wet, the disease grows white mildew. Pepper fruit disease starts from the pedicel, the disease spot watery, to the fruit surface development, like water scalding, grayish green, and then become gray soft rot, sparse white mildew. 50% copper succinate 500 times solution and 72.2% Pulic water agent 600 times solution or 64% poison alum 500 times solution or 72% DuPont Klou 700 times solution or 58% Metalaxyl manganese zinc 700 times solution can be used after planting and the first flowering stage.

Second, Sclerotinia sclerotiorum disease: pepper fruit infection generally starts from the navel fruit surface, extends to the pedicel, first turns brown, sometimes has light brown concentric lines, the disease spot grows white hyphae, and then some or all of the tissue is brown and rotten. At the initial stage of the disease, 50% methyl topiramate wettable powder or 1000 times sclerotia net wettable powder can be sprayed once every 7 to 10 days for 2 times. 10% quick gram smoke agent and 45% chlorothalonil smoke agent can be used in the shed, 250 to 300 grams per mu, once every 7 days, 2 times for 3 times.

Third, pepper anthracnose: mainly harms the fruit. At the initial stage of the disease, 80% Xinwansheng 1000-fold solution, or 80% anthrax Fumei 800-fold solution or 50% carbendazim 600-fold solution, or 70% methyl topiramate 800-fold solution can be used for prevention and treatment.

Fourth, pepper soft rot: mostly near the fruit stalk, around the calyx tube, the initial water-stained dark green small disease spot, rapid expansion, the whole green, soft rot, internal tissue rot, the diseased fruit is blistered. After the pericarp is broken, the internal fluid flows out, leaving only the wrinkled epidermis. Prevention and treatment: 72% agricultural streptomycin 4000 times solution or DT fungicide solution was sprayed once every 7 days for 2 times 3 times.

Fifth, pepper gray mold: mostly from the pedicel to start the disease, the pericarp becomes gray, showing water-stained soft rot. The disease spot soon extends to half or whole fruit and is covered with gray or gray brown mildew. At the initial stage of the disease, 50% promethrin 1500 × 2000 times, or 50% carbendazim 500 times, or 70% mancozeb 500 times, or 70% methyl topiramate 1000 times. Spray once every 7 days, 2 times continuously.

Sixth, pepper navel rot: physiological disease, often caused by calcium deficiency caused by abnormal water supply. At the beginning of the disease, the navel of pepper fruit showed a dark green waterlogged spot, then expanded, shrunk, sunken, browned, and often blackened or rotted due to other parasitic bacteria. At the initial stage of the disease, 1% calcium superphosphate or 0.1% calcium chloride can be sprayed once every 7 days for 2 times.