Cruciferous vegetable virus disease prevention and control method

Distribution and host plant cruciferous vegetable virus disease, also known as mosaic disease, occurs widely throughout China. In addition to various cruciferous vegetables, Other plants such as Solanaceae and Polygonaceae are also susceptible.

Symptoms of the disease after the plant, first in the young leaves produce bright veins, followed by mosaic symptoms, serious disease dwarfed deformity, leaf shrinkage, mildly diseased plants are generally normal, but poorly convulsions. The symptoms of Chinese cabbage are similar to those of Chinese cabbage, but the leaves of the seriously diseased plants are shriveled and the leaves are hard and brittle and produce many brown spots. There are also brown necrotic streaks on the veins of the leaves, often with cracks. Serious dwarf, deformity, no ball. Roots are underdeveloped, and the roots are yellow-brown. The seedlings were dead or peduncles bent when they were not taken out. The height was less than half that of the healthy plants. There were vertical and horizontal cracks on the pedicels. The flowers were early and the mildly diseased plants showed only microscopic leaves and shrunk. Gray or gray spots often appear.

The pathogenicity is caused by virus infection. Common viruses include: TpMV, CMV, and TMV. The first and second viruses are infected by aphids and sap. Tobacco mosaic virus can only be infected by sap. The pathogenic virus can pass through winter on crop-seeding strains or male perennial root crops such as spinach and weeds (chives, vegetables, plantains), spread to cruciferous vegetables in the spring, and pass through summer cabbage and cabbage to the autumn. Cabbage and autumn radish on. Diseased plant seeds are not transmitted. When the temperature is around 28°C, the incubation period is usually 8-14 days. The lower the temperature is, the longer the incubation period will be. At 10°C, the incubation period will be 25-30 days or more, and sometimes it will even appear as a hidden phenomenon. The seedlings were seriously affected before the 7th leaf stage. In addition, high temperature, dryness, and little rain during the seedling stage have caused serious viral diseases.

Control methods (1) Timely control of locusts with 40% dimethoate emulsion 1000 times, spraying once every 10 - 14 days, spraying a total of 2-3 times. Protecting Chinese cabbage seedlings with lead-silver grey or milky white reflective plastic film or lead paper has the effect of resisting lice and transmitting virus. (2) Improve cultivation techniques and enhance the disease resistance of vegetable strains. In the regions where vegetables are planted for an anniversary, strong seedlings should be selected. Before the planting, the soil should be sun-dried, loosened, and the base fertilizer must be fully applied. The use of planting logistics and quick-effect fertilizers to accelerate seedling growth can reduce the degree of harm. (3) Select resistant varieties. (4) Eradicate field weeds and reduce viral infections.

Portable Magnetic Separator

Introduction:

The Portable Magnetic Separator is the most popular model which used in seed, grain, flour mill plant to remove magnetic materials such as iron pieces, iron screws, iron nuts etc. it is portable, because it has very small size and easy to put on other equipment. it has a magnet cone which has high magnet strength, all magnetic materials will stick on the cones when grain passing by. so you should clean it after use for a while.

Features of Portable Magnetic Separator :

Compact Structure

Can be used independently or use with other equipment

Stainless steel or Carbon steel body available.

Different capacity available. 

Specification: 

Portable Magnetic Separator

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