Prevention and control measures for the formation of yellow tip of garlic seedlings

Garlic seedling is a green seedling in which garlic seedlings develop to a certain period. it grows in farmland. It has the spicy flavor of garlic and is eaten with its tender garlic leaves and leaf sheaths. Garlic seedlings are rich in vitamin C and nutrients such as protein, carotene, thiamine, riboflavin and so on. Its spicy taste mainly comes from its capsaicin, which has the effect of eliminating accumulated food. In addition, eating garlic seedlings can also effectively prevent influenza, enteritis and other diseases caused by environmental pollution. Garlic seedlings have a certain protective effect on cardio-cerebrovascular, can prevent the formation of thrombus, but also protect the liver. Can grow everywhere, and the output is high and the quality is good. Such as Shandong Linyi and other places large-scale planting, the economic benefit is considerable.

Varieties of garlic seedlings

There are many varieties used for bolting or both bolting and valves. the common local varieties are Linying garlic, Chaohua garlic, Kaifeng garlic, Luoyang purple garlic, Cixian Li garlic, Shanghai Jiading garlic, Hebei Anguo garlic, Shandong Cangshan garlic, Jiangxi Duchang red garlic, Chengdu Jintang red garlic, Anhui Lai'an garlic and so on. The garlic bolts of these garlic are more developed, but the garlic head is smaller. Garlic for bolting has strict requirements for light, so it must be tested first and then popularized, and it should be introduced from areas with similar conditions, so that there are more chances of successful introduction. Garlic seedlings of the four seasons like fertilizer, which is especially suitable for farm manure and chemical fertilizer.

The output is more considerable under the condition of sufficient fertilizer and water. Garlic seedlings of the four seasons have strong disease resistance and generally have no diseases and insect pests. if there are diseases or insect pests, you can refer to the prevention and control methods of garlic diseases and insect pests. Where it is too cold in winter, it is appropriate to sow seeds in spring and summer, and protective measures can be taken according to the situation after winter. The method is to cut off the ground before frosting, cover it with dung or wheat straw after pouring enough overwintering water, and then dig out the roots of the four seasons garlic seedlings and put them in indoor sand storage, and transplant them after thawing in the spring of the following year.

Dietary value of garlic seedlings

Garlic seedlings contain capsaicin, and its bactericidal ability can reach 1 to 10 of penicillin. It has a good killing effect on pathogens and parasites, and can play a role in preventing influenza, preventing wound infection, treating infectious diseases and deworming. Garlic seedling is the green seedling of garlic. The yellow garlic leaf stalk is the flowering stem of garlic with its tender leaves and leaf sheath for edible garlic yellow, which is cultivated without sunlight and under proper temperature and humidity conditions. Garlic seedlings can obviously reduce blood lipids, prevent coronary heart disease and arteriosclerosis, and prevent the formation of thrombus. It can protect the liver, induce the activity of detoxification enzymes in hepatocytes, and block the synthesis of nitrosamine carcinogens, thus preventing the occurrence of cancer. According to the Compendium of Materia Medica, garlic seedlings have the functions of dispelling cold, dispersing swelling and pain, killing poison gas, invigorating the spleen and stomach, and so on. Garlic seedlings have a certain protective effect on cardio-cerebrovascular, can prevent the formation of thrombus, but also can protect the liver, induce the activity of hepatocyte detoxification enzyme, can block the synthesis of nitrosamine carcinogens, and play a certain role in cancer prevention.

Prevention and control measures for the formation of yellow tip of garlic seedlings

The reasons for the formation of yellow tip of garlic seedlings:

Garlic seedling leaf tip appears withered yellow dry death, commonly known as yellow tip. As long as the corresponding measures are taken in production, the occurrence of yellow tip can be avoided. The main causes of yellow tip: continuous cropping, maggot harm to the roots, "weaning" (also known as) "retreating mother" or "rotten mother") withered and yellow, which is a physiological phenomenon.

Prevention and control measures of yellow tip of garlic seedlings:

One is crop rotation. Garlic can not be replanted, and the fields where garlic has been planted in the first crop cannot be planted again. Continuous cropping will not only lead to yellow tip of garlic seedlings, but also produce other diseases, and it does not grow well, which affects the yield and quality.

The second is to control ground maggots in time. General insecticides can be prevented and treated.

The third is to apply "weaning" fertilizer in time. The withering and yellowing of "weaning" is a common normal physiological phenomenon of crops, which indicates that the tubers or seeds of the crops sown have been exhausted, the plants have entered the vigorous growth period of absorbing nutrients from the soil, and the demand for fertilizer and water has increased.

Therefore, before "weaning", we must top fertilize and supply water, so that there is an adequate supply of nutrients in the soil. "weaning" fertilizer is generally suitable for topdressing 20-30 days after sowing, with 1000 kg of mature human and animal manure and 15-20 kg of urea per mu. 0.1% potassium dihydrogen phosphate solution is used as foliar fertilizer, which can reduce or avoid the occurrence of yellow tip of garlic seedlings and promote the differentiation of flower bolts and garlic cloves.