The latest control methods of common diseases and insect pests in pea

Pea is a common vegetable, deeply loved by people, in rural areas, basic families will plant some, but vegetables will suffer from diseases and insect pests when planted. What are the common diseases and insect pests when peas are planted? Let's get to know each other.

1. Root rot

The disease can occur from young plant to adult plant, most of them are infected in florescence, mainly in florescence, mainly damaging root and stem base of plant, leaves of diseased plant begin to yellow first, gradually develop to middle and upper, resulting in yellow and withered of whole plant. The root system will also become dark brown or earthy red, nodules and root hairs will be significantly reduced, the plant will be dwarfed in light, and the root system will rot and die in heavy cases. The disease is spread by soil, diseased body and seeds, invaded by seeds and roots, and is usually serious in dry years.

Control methods: available chemical seed dressing or soil mixing method of prevention, disease with carbendazim and chlorothalonil irrigation root control.

2. Brown spot disease

It mainly harms leaves, stems and pods. After the leaves are infected, pale purple spots will appear. Under high temperature and high humidity environment, the spots will spread rapidly and cover the whole leaves. The diseased leaves will turn yellow and die, and some will present brown irregular ring spots. Mainly because the pathogen overwinters on the seed, spreads by wind and rain, sows too early or suffers from low temperature and cold damage, or the soil is sticky, the humidity is high, the partial application of nitrogen fertilizer, and the disease will also occur.

Control method: 2-3 rotation with non-leguminous vegetables, at the same time require seed disinfection, seed germination yield, sowing appropriate dense planting. Benomyl, thiophane methyl and chlorothalonil can be sprayed once a week for 2-3 times in the early stage of disease.

3. Powdery mildew

In the early stage of the disease, small yellow spots appear on the leaves, gradually expanding into irregular pink spots. In severe cases, both sides of the leaves are covered with a layer of white powder, and finally turn yellow and die. In the later stage, pink spots will turn gray, and many small black umbrella spots will grow.

Control method: At the initial stage of disease, spray meflocillin and carbendazim for control, once every 10-20 days, continuously spray 2-3 times.

4. Leaf miner

Commonly known as leaf arch worm, leaf folder worm, leaf maggot, etc., is a multi-feeding pests, can host more than 100 of the most, in vegetables mainly harm celery, cabbage, radish and so on.

Control methods: in vegetable harvest to timely clean up the field residual leaves, weeds, concentrated burning or deep burial, reduce pest technology, can take 31% abamectin·cyromazine, 5% abamectin EC for control.

The above is an introduction to common pest control methods for peas. I hope it can help you. If you want to know more about related knowledge, please pay attention to us.