MySheen

How is eggplant stem and leaf long spot to return a responsibility after all?

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, The small spots on eggplant leaves are light in the middle and dark brown on the edges, and the larger ones are irregular. There are also many small black spots on the disease spot. Many petioles have dark brown necrotic spots. After the stem disease, also has the dark brown disease spot, the disease spot is also the edge dark brown, the middle color is lighter, above also dense small black spot.

The small spots on eggplant leaves are light in the middle, dark brown at the edges, and irregular in the larger ones. There are also many small black spots on the lesion. Many petioles have dark brown necrotic spots. Stem disease, there are also black-brown spots, spots are also dark brown edge, middle color to light some, above also dense small black spots. Very ill plants die from the diseased part of the stem upwards. Fruit disease is less, only individual fruit has brown spots with black spots. Analysis: Long eggplant was mainly infected by eggplant brown streak, not eggplant early blight. The typical symptoms of eggplant brown streak disease are: first, the color of the disease spot is pale white in the middle and dark brown around it, second, the disease spot has ring patterns, third, the disease spot is densely black dots in the late stage, and there are necrotic spots on petioles and stems. Although eggplant early blight can also cause spots on eggplant leaves and stem discoloration and necrosis, the typical symptoms of eggplant early blight are brown spots with concentric rings and yellow halo around, and stems are water-rotten. The main reason why vegetable farmers did not have ideal control effect was that they did not know what disease infected eggplant, which led to the wrong way of medicine. Control recommendations: due to eggplant brown streak disease in the shed high humidity, leaf dew for a long time, the incidence of heavy, fast epidemic. The branches and leaves are tight, and the disease is heavy for the prosperous plants. Vegetable farmers can start from these aspects, combined with medication, to control eggplant brown streak disease. First of all, management operations, to reduce the humidity in the shed, reduce the heavy dew on leaves. It is suggested that vegetable farmers should adopt the method of dark irrigation or drip irrigation under film when watering, so as to avoid a large increase in humidity in the shed after watering. After watering and daily management, attention should be paid to timely closing the shed to raise temperature and remove moisture. Crop straw moisture absorption laid between operation lines. In the late winter, when the humidity in the shed is large, it can be changed to spray liquid medicine for powder spraying disease prevention. Secondly, after picking the fruit of the long eggplant, the old leaves, yellow leaves and redundant branches at the lower part of the plant should be removed in time to increase the ventilation and transparency between the plants. In the disease-prone period, foliar fertilizer such as nucleotide and green leaf diamond can be sprayed on the leaves to enhance the resistance of the leaves. Again, correct medication is critical. According to the disease pattern, early spraying is very important. 75% chlorothalonil 600 times solution or iprocarbamide 500 times solution can be sprayed early in the disease-prone period for prevention. After disease infection, 500 times solution of 65% zebrazine wettable powder or 600 times solution of Kebo can be selected. Generally, it is sprayed once every 7 days, and continuously sprayed 2-3 times.

 
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