Integrated control of ginger rot

Ginger rot disease, also known as ginger plague, is the most common bacterial disease of ginger. It occurs mainly in the underground rhizomes. After the onset of the disease, the initial leaves curl, slightly sagging, and there are fine black spots at the growth point; the middle leaves of ginger plants withered Sagging, the lesions at the stem base and rhizome plant began to be watery, yellowish-brown, and lusterless. The underground rhizomes began to rot; the internal tissues of the rhizome gradually rotted, leaving only the skin, which was full of gray and white odor, and the leaves were wilting and curled. The diseased rots and the entire plant dies. Light spotting occurred, resulting in reduced production, severe severe reduction or absolute production, generally can reduce production by more than 50%. The pathogens of ginger rot are mainly found in soil, ginger seeds, stubble, and fertilizers. Generally, they are invaded from the wounds of roots of plants, but also invade from leaves and stems, and invade the roots downward. Control measures: 1. Use disease-free ginger seeds and ginger to disinfect. Leave disease-free seeds or use disease-free ginger seeds. Before sowing, cut the ginger soaked with 50% carbendazim WP 800 times for 6 hours, or soak with 2000 times liquid for 24 hours. . 2. Ginger choice and disinfection. The bacteria can survive in the soil for more than 2 years. The crop rotation should be strictly implemented and the cornices should be properly arranged. The land that has not been grown with ginger for 3 years is the best. Prior to planting, combine 667 m2 (1 mu) of ploughshare with 5 to 10 kg of quick lime into the field and turn the lime in contact with the soil by turning it over; or use the soil bactericide from Beinonglv Soil directly to spray the soil. . This can play a role in sterilization. 3. Standardize cultivation management. The first is to use mulching film to cover planting and plant densely to improve the disease resistance of plants. The second is the application of net fertilizer, increased phosphorus and potassium fertilizers and trace element fertilizers to enhance plant resistance to disease. The third is reasonable water management. When the water is poured, the water is poured and the soil is kept wet. After the rainstorm, the water is drained and the well water is used to flush the water. The fourth is to timely cultivating weeds and soil and prevent pests. 4. Chemical control. First, the diseased plant was found out in time, and quicklime was used to disinfect the diseased hole and surrounding soil. The second is to strengthen the prevention and treatment of the disease before the onset, can be used 20% Ye Kuanging 1300 times or 50% Johnson Sun 1000 times spraying the lower part of the plant or watering roots, every 7 days, for 3 to 4 times. The third is to continue drug control in the middle period of disease, with the use of agricultural streptomycin 5000 times or more than 50% Feng agricultural wettable powder 600 times solution sprayed or rooted, once every 8 to 10 days, 2 or 3 times in a row.

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