The key to controlling ginger ailments is prevention
Core Tip: Ginger disease, also known as ginger rot disease, is a devastating bacterial disease. In recent years, ginger production areas in our country have generally occurred, generally reducing production by 10-20%, and seriously ill by more than 50%, posing a serious threat to current ginger production. Big.
Ginger disease, also known as ginger rot disease, is a devastating bacterial disease. In recent years, ginger production areas in our country have generally occurred, generally reducing production by 10-20%, and seriously ill by more than 50%, posing a great threat to current ginger production.
According to the survey, ginger borer disease began to occur at the end of June or early July, and entered the peak of disease in the middle and late July. The most serious damage occurred from the beginning of August to the beginning of September, and gradually became lighter after the middle of September. The entire onset period lasted for more than 100 days. Among them, the period of 30-60d. The pathogens mainly in the soil and roots (ginger) wintering, diseased ginger and soil containing diseased plant residues, fertilizer is the initial source of field bacteria; in the growing season, The pathogens on the diseased plants spread through the fields, underground pests, and wind and rain, and once the conditions are right, they can quickly spread the disease. From the current research results and local production practices, the key to controlling ginger rickets is prevention. One way to prevent it is to prevent the introduction of pathogens into the ginger field and to control the spread of germs in the fields. Specific measures include:
First, a reasonable rotation. Gingerella can survive in the soil for more than 2 years, and rotation with other crops for more than 3 years can greatly reduce the disease. At the same time, when we grow ginger, we must also pay attention to the land that is good in permeability and conducive to drainage, and apply more basal fertilizer. In particular, we must use more plants, cavities, old houses, or other potash to enhance the disease resistance of the plants. .
Second, ginger disinfection. Before planting, it is necessary to strictly select disease-free ginger and disinfect it. Commonly used disinfection methods include: (1) using plant ash 2kg, adding 0.5kg of water, soaking and soaking ginger for 10-20min after soaking; (2) immersing for 10-20min with 1:1:200 Bordeaux mixture; (3) using 100% formalin Dip for 10 min; (4) dip for 30 min with 1000 units of agricultural streptomycin or 500 units of oxytetracycline solution; (5) dip 20% with 40% carbendazim 1000 times solution.
Third, strengthen management. During the growing period of ginger, it is necessary to check on the ground and find that the sporadic diseased plants are immediately removed, and disinfecting with lime or bleaching powder beside the diseased sites and the surrounding healthy plants; for those sites with severe disease, flood irrigation should not be carried out to prevent the spread of disease. .
Fourth, chemical control. Before or at the onset of disease, spray 150-200 units of streptomycin for agricultural use, 65% for 600 mg of zeocin, 50% for 50% Yehuming, 50% for DT500, and 800 times for 30% copper oxychloride Liquid, or with 50% Tuzi special 500 times the roots of ginger plants, 2 times a week, can achieve a certain effect.
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