Causes of degradation of purple garlic and its control measures

Many farmers grow purple garlic with their own seeds, and the reasons for the degradation of growing garlic over a long time will be characterized by plant dwarfing, light green leaves, smaller garlic and other symptoms, and the yield is also lower and lower year by year, which seriously affects the income of garlic farmers. So what are the reasons for the degradation of purple garlic? How to prevent and cure it? Let's get to know it.

First, the reasons for the degradation of purple garlic.

Garlic is a vegetative crop, which does not go through the growth cycle of sexual reproduction, which is the main reason for the degradation of garlic varieties. in addition, improper cultivation methods and bad climate are also one of the reasons for the degradation of garlic varieties. In addition, insufficient fertilizer, excessive planting density and lax seed selection will lead to the degradation of purple garlic varieties. In production, farmers often postpone the harvest time for the yield of garlic bolts, which will not be harvested until the garlic bolts become coarse and old fiber, which will cause a lot of nutrient waste and affect the development of garlic. There are viruses in garlic plants, and the continuous accumulation of viruses will lead to a decline in yield and quality. the dry and high temperature climate is very easy to spread garlic virus disease, so the degradation of garlic caused by virus disease is also very serious.

II. Prevention and control measures

1. Select a good plot

Select loam soil and plots with convenient drainage and irrigation as seed fields, the first crop should be peanut, corn and other crops, and fine soil preparation should be done before sowing.

2. Seed selection

Seed selection should be carried out before 10:00 and in the evening of the garlic harvest season. Garlic with no wounds, diseases and insect pests, rotten cloves, uniform size, fat and plump appearance and consistent color should be selected as garlic seeds.

3. Virus-free reproduction

Taking advantage of the fact that the stem tip of garlic is virus-free, the shoot tip of young buds in garlic cloves is cut for tissue culture, virus-free garlic seedlings are propagated under aseptic conditions, and then the virus-free garlic seedlings are cultivated and propagated into the original seed, and then the second generation seeds are propagated for production.

4. Reasonable close planting

The planting density of the garlic seed field is less than that of the production field, generally the row spacing is about 25 cm, the plant spacing is about 20 cm, and the sowing time is 10-15 days later than that of the production field. In order to prevent secondary growth, the seeds were placed at a relative humidity of 75% 20 days before sowing. The temperature is above 2 degrees.

5. Timely harvest

When the garlic bolts grow out of the leaf sheath mouth and slightly bend in the upper part, they can be harvested. The harvest time is noon and afternoon in sunny days, and the bolting device is used to draw out the garlic bolts so as not to damage the pseudo-stem as far as possible, so that the leaves can continue to provide nutrition for the growth of garlic. It is necessary to water and loosen the soil in time after harvest to promote the growth of garlic.

The above is the introduction of the causes and control measures of the degradation of purple garlic. I hope it can help you. If you want to know more about it, please follow us.