The latest preventive measures for mad top disease of corn

Maize mad top disease is not only a potential danger affecting corn production, but also a disease prone to occur during the whole corn planting period, which has a great impact on corn yield and often gives farmers a headache. The following editor brings you preventive measures, let's learn about it.

1. Symptom manifestation

The symptoms of Mandingbin varied with different varieties and stages of the disease. in the early stage, the leaves were lighter, the leaves were curly or with yellow stripes, the plants became shorter and had larger tillers, and some plants were less than 1 meter high, but there were as many as 6-10 tillers. After heading, the symptoms of the disease are often characterized by male ear proliferation and deformity, floret, a large number of leaflet clusters, so that the male ear into a hedgehog. On some diseased plants, the upper part of the male ear is normal, the lower part is deformed, showing a round hydrangea shape, due to the male ear proliferation and crazy growth, it is called "crazy top disease". Sometimes the diseased female spike does not draw filaments, the leaf tip is abnormal, and the leaflet-like cluster is formed, but sometimes the leaflet-like front end of the female panicle is characterized by the variety.

2. The route of transmission

Maize Mengdingbin is a kind of fungal spore subsystem infection virus, the pathogen is parasitic in the diseased plant or soil, and after sowing, the pathogen begins to divide the oospore and send it to the new host. Maize is most susceptible to infection during germination, and infected seeds can also spread over a long distance, thus inducing new infected areas. according to studies, normal-looking plants have a high seed carrying rate and a high risk of spreading diseases.

3. Preventive measures

Varieties with strong disease resistance should be selected for breeding and planting to prevent the early spread of the disease. Newly sown corn should be as far away from the epidemic area as possible, do not plant with diseased plots, and do not introduce seeds from the epidemic area. Strengthen the cultivation management, remove the diseased plants and weeds in the diseased field after harvest, destroy them in time, dig deep into the soil, promote the decay and decomposition of the diseased and residual bodies, or carry out rotation between corn and non-host crops. In the seedling stage, the amount of irrigation should be strictly controlled to avoid flooding, timely elimination of stagnant water in the field, and reduce soil moisture. When a disease occurs, the diseased plants should be removed in time and destroyed with conditions to avoid the spread of the disease. Regular disinfection and sterilization can be carried out with 59% metalaxyl manganese zinc or 260 ml antiseptic alum spray.

The above is the introduction of corn mad top disease prevention measures, hope to help you, want to know more related knowledge, please pay attention to us.