The dryness of garlic tip is caused by various factors such as root rot, leaf spot, and herbicide injury. The phenomenon of garlic tip dryness occurring in different periods is related to different factors. General garlic seedling period (October) and returning to the green period (in March of the following year) are prone to leaf tip dryness.

The phenomenon of dry tip of garlic in seedling stage is caused by physiological factors. The main reason is that the temperature is too high. With the mulching film, the temperature under the membrane is high, garlic roots and roots are burned, nutrient absorption is hindered, and the leaves are insufficient. The nutrients cause the tip to dry and even die. It is not too early to sow in the autumn and it is necessary to remove the film in time.

In the early spring, when the garlic returned to the green stage, the phenomenon of tip dryness was mainly caused by root rot. Garlic root rot is mostly caused by bacterial infestation. After the plants infect bacteria, the primary root rots from the root tip to the base, and the subsequent roots decay one after another. Some plants rot with the garlic and the mother, and the odor is rotted at the rotting place, and it is easy to cause mantle and other parasitic diseases. Pests. The leaves of the diseased plants turned green and yellowed, and they were softly rotted along the longitudinal veins from the tip of the leaves. The plants were short and the growth and development were disordered, and the plants died severely. In addition, the phenomenon of leaf tip dryness appeared in large areas in spring, and it was mostly related to the sowing of garlic after the corn was harvested without the necessary disinfection of the soil. Root rot pathogens in the soil have accumulated year after year, resulting in severe root rot and dry tips on the shoots. To prevent the tip of garlic from drying out in spring, it is necessary to sterilize the soil before garlic is sown. Generally, in September, garlic is sown in the sun 1 month before sowing. The depth of ploughing is not less than 20 cm. Before sowing, the soil was rotatably plowed, and lime, biological agents, carbendazim, etc. were used to disinfect the soil. Seed dressing with pesticides can also prevent the occurrence of garlic root rot. The specific method is to use 170% Daning wettable powder 150 grams per 100 kilograms of garlic, add 8 kg of water evenly to spray garlic, and soak after drying. Root rot occurs during the growth period of garlic, and can be sprayed or rooted per acre with 30 grams of bronchobacterin (20% thiazole copper suspoemulsion), 40 to 60 milliliters of water, or sterilized per acre at the beginning of the disease (50 % Chlorocyanine isocyanuric acid wettable powder) 30-60 grams of water plus 50 kilograms of spray or irrigate root, control once every 5 days, continuous control 2 or 3 times. Severe diseased plants and dead plants should be removed in time and taken out of the field to prevent the spread of the disease.

Author: Qi Liming

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