Integrated control of garlic white rot

Garlic white rot is the most easily occurring disease during the growth of garlic. Its pathogens are low temperature and high humidity. The temperature is below 20°C and the humidity is more than 90%. As a result, the onset is rapid in the rainy season, especially when it grows thin and continuous cropping can lead to increased disease. High temperature and low humidity are not conducive to the disease. In the early stage of disease, the tip of the outer leaf appears yellow or downward from the tip of the leaf, and then extends to the leaf sheath or inner leaf. The growth of the plant is thin, and the whole plant turns yellow and dwarf or withered. Pull out the diseased plants can be seen black and decayed bulbs, severe disease, can cause garlic to die.

Garlic white rot mainly damages leaves, leaf sheaths or bulbs, and has a great impact on the yield and quality. It should be paid attention to in production. Comprehensive prevention methods include:

Garlic treatment. The garlic seed treatment before sowing can effectively cut off the initial infection and prevent the occurrence of diseases. Garlic seeds must be sowed with 50% carbendazim WP or 50% thiophanate-methyl WP before sowing. The specific method is for every 50 kilograms of garlic seeds, 500 grams of the drug on the water 3 to 5 kilograms (uniform showering on the garlic species) for sterilization, drying and sowing.

Taboo continued. Garlic white rot is a soil-borne disease, and continuous cropping is an important path to disease. Therefore, garlic must be strictly applied to non-garlic crops for 3 to 4 years of rotation.

Strengthen the tube. The main field measures for the prevention of white rot in garlic include: top-dressing and raising seedlings, loose soil, and rowing to reduce soiling, promote garlic growth, and increase disease resistance; the diseased plants were found to be excavated in a timely manner and brought out of the field to burn in a concentrated manner; Spread and apply fertilizer on the ground so as not to bring the germs back into the field.

Chemical control. Apply 50% carbendazim WP 500 times, 50% thiophanate-methyl WP 600 times, or 20% CK 5000-fold, or 75% Garlic leaf green WP 1500 times 50 to 60 kg spray control, once every 7 to 10 days, continuous medication 2 times. Can also be used 75% garlic leaf green WP 1000 to 1500 times, or 50% acetaminophen wettable powder 1000 to 1500 times liquid rhizomes, every 7 to 10 days 1, continuous medication 2 times. The rhizome spray method is better than the spray control method.

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