What are the common diseases and insect pests of perilla? With efficient prevention and control methods!

Perilla is very common in rural areas. With the discovery of the value of perilla, the market began to fall short of demand and began large-scale artificial planting, but perilla, like other crops, will have a variety of diseases and insect pests, so what are the common diseases and insect pests of perilla? With efficient prevention and control methods!

1. Spot blight

Disease characteristics: spot blight is caused by fungi, mainly because the pathogen of spot blight lurks in the depths of the soil and the remains of the disease to survive the winter. when the temperature gradually rises, it will begin to invade the plant, usually in late spring and early summer. cause harm to leaves, leaves after the disease, there will be black spots on the leaves, spots gradually spread to form patches of different specifications, and then withered and fallen leaves.

Control methods: select varieties with strong disease resistance and good genes when selecting seeds, or choose plants with strong growth and disease-free as parent plants to keep seeds independently, try not to carry out continuous cropping, prevent continuous cropping, timely topdressing, improve plant disease resistance, timely drainage and irrigation, reasonable control of planting density, after the disease can be sprayed with mancozeb and other chemicals.

Second, dodder

Disease characteristics: when many friends are planting, they often find that local perilla is entangled by orange vines, and the plant can not grow upright, and after a period of time, the leaves will gradually become withered, yellowing and falling, resulting in a decline in plant photosynthesis. This is dodder, a disease parasitic on the plant. Dodder will entangle the plant to absorb the nutrition of perilla, resulting in perilla without nutrition and can not grow and finally die.

Prevention and control methods: pay attention to the selection of seeds, pay attention to check whether there are dodder seeds when sowing, if there is to be picked out in time, when applying base fertilizer, the farm manure should be fully mature, dodder seeds can not withstand the heat of farm manure after maturity, regular inspection, it is found that the vines with dodder will be uprooted to prevent further growth, and spray appropriate amount of Lasso EC to control after sowing.

3. Root rot

Disease characteristics: root rot is also a fungal disease, root rot spread in many ways, such as Rain Water, growers, farm manure and many other factors, generally in uneven temperature and humidity, too much water, poor soil quality, continuous cropping is the high incidence period, root rot mainly harms the root, the root rot will begin to rot after the disease, the lateral root growth will be blocked, resulting in insufficient nutrition, the plant can not grow effectively. In severe cases, it withered and died.

Prevention and control methods: similar to spot blight, continuous cropping and repeated cropping should not be carried out. During sowing, the seedbed should be turned deep into the sun, and then the base fertilizer should be fully ripened to improve the resistance of seedlings, do a good job of drainage and irrigation in the field, improve the planting and growth environment, pull out the diseased plants in time and take them out of the countryside for destruction. Once a week, methyl thiophanate wettable powder and other drugs can be used to control the disease. It lasts for a month or about 20 days.

The above is the introduction of the common diseases of perilla planting by Tuliu. of course, there are far more than these, such as powdery mildew, rust and so on. if they are prevented and treated in time, these diseases will cause devastating damage to plants. therefore, we must take various preventive measures, strengthen management, and reduce the incidence of diseases to a minimum.