How to prevent and cure the brown spot of Hami melon?

What harm does cantaloupe brown spot disease have? How to prevent and cure the brown spot of Hami melon? Also ask netizens to help introduce the harm and control methods of cantaloupe brown spot disease in the farming network, which are listed in detail below for netizens' reference. What are the hazards of Hami melon brown spot: Brown spot is a common disease of Hami melon, which is widely distributed, sporadic, mild and has no effect on production. In severe cases, the rate of diseased plants can reach more than 80%, making some leaves infected and necrotic, affecting the yield and quality to a certain extent. Symptoms of this disease mostly occurred in the middle and late growth of Hami melon, only infecting leaves. Brown dots were produced on the leaves at the initial stage, and then developed into near-round to amorphous brown necrotic spots, with large differences in size, obvious edges of the lesions, and often with yellowish green to light yellow halos. Generally, the mildew layer on the disease spot is not seen, and the dark gray mold layer is produced only under the condition of continuous rain or high humidity, that is, the pathogen conidiophores and conidia. The conditions for the onset of brown spot: warmth and high humidity are beneficial to the onset of brown spot. When the onset temperature is 20-30 ℃, the relative humidity is more than 90%, the temperature is 25-27 ℃ and the humidity is saturated, the disease occurs seriously. In the middle and later stage of growth, high temperature and humidity, or more overcast and rainy days, or stuffy shed for a long time, and large temperature difference between day and night are all beneficial to the disease. Control methods of Hami melon brown spot: method 1. Rotation of seriously diseased land with non-melons and legumes for more than 2-3 years to control the disease. Method 2. Strengthen cultivation management, pay attention to ventilation, scientific fertilization, timely irrigation, cultivate strong seedlings, remove diseased plants in time, thoroughly remove disease residues after harvest, and reduce the source of bacteria in the field. Method 3. Spray the 600-fold solution of 70% methyl topiramate wettable powder or 80% Dasheng wettable powder at the initial stage of the disease. Prevention and control in advance can be controlled with 6.5% metamyl powder 15kg/hm2 powder. Click to get more cantaloupe planting techniques click to get more fruit planting techniques