Peanut rotten fruit diagnosed prescription
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1. Infectious diseases cause rotten fruit. The main symptom is the appearance of light brown-black lesions on the pods that are the main feature of pod rot disease. The lesions expand and connect into one, the surface of the whole loquat fruit is discolored, and as the disease develops further, the hull tissue is separated and the nuts rot. All those who have started to rotten fruit in August and meet the above symptoms are pod rot disease, caused by the infection of most of the bacteria.
2. Physiological rotten fruit, including arid rotten fruit, rainy rotten fruit. Mainly due to drought or rain in August caused rotten fruit. Drought caused by rotten fruit, sandy land is serious; the same land, where the high terrain is serious. The rot caused by the rain is serious in the clay land; in the same land, the terrain is low.
3. Other reasons include rotting fruit, rat rotten fruit, and mechanical rotting.
Second, prevention and control measures
1. For infectious diseases caused by rotten fruit, should be controlled by drugs. Can be used 50% carbendazim powder 200 ~ 300 times irrigation root control (foliar medication is invalid, carbendazim to use the original powder).
2. For rotten fruit caused by physiological diseases, management should be strengthened. Drought should be timely watering, irrigation with gully irrigation is appropriate, spray irrigation better. In the rainy season, the drainage channels are connected to each other, and the water circulation is smooth during the rainy season. The water in the fields is kept clear, and the stress resistance of the plants and pods is enhanced, and the rate of rotting fruit is reduced.
3. For other causes of rotten fruit, the following measures can be taken to prevent and control.
(1) Drug treatment seeds. When peanuts are sown, they should be coated with peanut seed coating agents as much as possible. Or when peanuts are sown before planting, use 5% of phorate or phoxim 38-45 kg per hectare, mix 225-300 kg of soil, and spread it in the sowing ditch. When sowing, use 50% phoxim 500ml, add water 40-50kg, and seed 400-500kg. Peanut crusting period, with 90% crystal dipterex 2000 times Irrigation root, the effect is also more ideal.
(2) Cultivate strong seedlings. During ridging planting, the “filling fertilizer†is applied before ridging so that Lipei is young and strong. For calcium-depleted soil, attention should be paid to the application of calcium fertilizer.
(3) Controlling rat damage. Use poison baits to trap and kill rodents. One kilogram of zinc phosphide can be used, and 20 kilograms of millet or wheat can be added. It can be placed at equal distances or ratholes in the field.
(4) timely harvest. The top growth point of the peanut plants stopped growing, the upper leaves turned yellow, the middle and lower leaves turned green and yellow gradually, and the stems became aged and turned yellow-green. Most of the pods became hard and the reticulation was clear, and the sponge tissue shrank and ruptured. With a dark brown luster, the skin is full and thin, and the inherent luster of the variety is harvested. The harvest is mainly based on manual removal to reduce fruit loss and increase production and income. (Yi County Bureau of Agricultural Economics Plant Protection Station 063700)