How to prevent and control viral disease in bitter melon

Bitter melon is a dish we often eat in daily life. It is rich in nutritional value and has effects such as clearing heat and detoxifying, and nourishing the skin. It is grown in both northern and southern regions of China. In the process of growing bitter melon, viral disease is one of the very common diseases. This disease affects the leaves of bitter melon and even affects the yield and quality of bitter melon, causing a certain degree of economic loss to farmers. Today, Qinnong Net introduces the prevention and control methods for this bitter melon viral disease.

To understand how to prevent and control this disease, we first need to know the symptoms of this disease. Only by knowing the symptoms can we confirm the disease suffered by bitter melon, which is helpful for treatment results. Without further ado, let us take a look now.

I. Harmful symptoms of bitter melon viral disease

In bitter melon plants infected early with viral disease, the leaves become smaller, wrinkled, and the internodes shorten. The whole plant is obviously dwarfed, and it either does not set fruit or sets few fruits. In the middle and late stages, leaves of plants infected later become wrinkled, and the leaf color is uneven, appearing as a mosaic mottled pattern. Young shoots and vines are deformed, growth is hindered, and the fruits are small or have pointed tails, deformed and twisted.

II. Prevention and control methods for bitter melon viral disease

Here, Qinnong Net has prepared two prevention and control methods for everyone. One is agricultural control, and the other is chemical control. Agricultural control eliminates the source of bitter melon viral disease from the planting method, while chemical control prevents and controls this virus through pesticide methods. The specific methods are as follows:

1. Agricultural control

Select disease-resistant varieties, save seeds from disease-free plants, and disinfect bitter melon seeds before sowing; after sowing, use medicated soil as covering soil, and spray an insecticidal and sterilizing agent once before transplanting; after the seedlings are transplanted, spray Xinguozhimu, which can effectively prevent aboveground moisture from evaporating and seedling moisture from transpiring, isolate diseases and pests, shorten the seedling revival period, and help them quickly adapt to the new environment and grow healthily. In high temperature and dry conditions, water frequently to increase field humidity and reduce aphid damage and virus transmission; spray growth promoters such as yield-increasing bacteria, Duoxiaohao, or Xinguozhimu, or spray a mixed solution of potassium dihydrogen phosphate, black soap, or laundry soap at 1:1:250 times, once every 5-7 days, for 4-5 consecutive sprays.

2. Chemical control

To prevent and control bitter melon viral disease, there is currently no good pesticide that can cure it fundamentally; it can only prevent the further spread of the virus. The first is to control the insects and prevent the virus from being transmitted by aphids and greenhouse whiteflies. You can choose 25% Actara water-dispersible granules at 6000-8000 times, 70% Admire water-dispersible granules at 10000-15000 times, and 5% acetamiprid emulsifiable concentrate at 2500-3000 times, then add Xinguozhimu at 500 times, focusing on spraying the back of leaves and growth point areas. The second is to spray virus inactivators, such as 20% Virus A wettable powder at 400-600 times, which can enhance the plant's resistance to the virus and disease tolerance. In the early stage of the disease, spray 5% Junduqing at 200-300 times and then add Xinguozhimu at 500 times for 1-2 sprays, which has a certain effect.

The above is the prevention and control method for bitter melon viral disease brought to you by Qinnong Net. This disease mainly occurs in summer and autumn, and bitter melon grown in open fields is especially more susceptible to the disease. Since there is currently no fundamental cure, we should make preventive preparations in advance when growing bitter melon, and remove diseased plants as early as possible to prevent cross-infection.