Bacterial blight is a major disease of rice. When it is severe, the yield is reduced by 40% to 50% and even the grain is not harvested. In addition to Xinjiang, the disease has occurred in other rice areas in China, and is common in the east China, central China, and southern China. Among them, there are more occurrences of leaf and nodal occurrences, which can result in reduced production at different levels after occurrence.
Bacterial leaf blight of rice: Bacterial blight of rice - damage to the symptoms of the plant can be affected throughout the growing period, the most severely affected during the seedling and tillering stages, and the leaves are most susceptible to disease. The main damage to the leaves, in severe cases also damage the leaf sheath, first from the tip of the leaf or leaf margin, appear dark green water immersed linear spots, quickly formed along the linear spots yellow-white lesions, and then along the leaf margin on both sides or midrib extension, It turns yellow-brown and finally withered white. In the disease-resistant varieties, the edges of lesions are irregularly corrugated.
Pathogen and Occurrence: Rice leaf blight is a bacterial disease. The bacteria mainly overwintered on rice seeds, rice straw, and rice piles. The bacteria in the soil near the rice field piles in severely affected fields can also spread diseases the next year. Sowing of diseased valleys, germs can invade through the roots and the coleoptiles of the seedlings. The pathogenic bacteria on the rice straw and rice piles seep into the water stream when they encounter rainwater. The seedlings are exposed to the carrier water, and the bacteria invade into the rice body from the water hole and wound. Straw germination with diseased rice, covering seedlings, barbs, and other favorable diseases spread. Early and mid-season paddy fields have low bacterial count due to low temperature.
Control methods: First, strengthen plant quarantine; Second, choose disease-resistant varieties; Third, strengthen management of cultivation techniques: Advocate the use of adequately composted compost, strengthen water and fertilizer management, shallow water ground irrigation, timely drainage after rain, drainage during drying, Sakamoto is waterproof and flooded. The fourth is to properly handle the diseased rice straw and prevent the germs from contacting with species, buds, and seedlings, and remove the Tanabe regeneration rice plant or weeds. Complete the irrigation and drainage system, implement separate irrigation and drainage, no string irrigation, flood irrigation, and prevent flood damage; Fifth, seed treatment: use 1% lime water or 80% ethyl allicin 2000 times solution to soak 2 days or 50 times solution Malin soaked seeds for 3 hours and sweltered for 12 hours, washed and germinated. Soaking seedlings can also be used 2ml, 10 to 12L of water, fully stir after soaking rice 6-8kg, soaking seeds after 36 hours germination sowing. Can also be used 30% bosonin 100 times liquid, heated to 55 °C, soaking seeds for 36 to 48 hours after germination sowing. Sixth, chemical control: 20% Yezizole wettable powder 100-125g/mu or 72% streptomycin sulfate soluble powder 14-28g/mu or 77% copper hydroxide suspension 600-800 times evenly spray, depending on the condition Interval 7 sprayed once every 10 days for 3 to 4 consecutive times.
Importance: 1. Bottle should be used within 60 days of first opening. 2. Keep away from light and moisture. 3. Do not leave in the bathroom to avoid moisture. 4. Tightly replace cap after removing strips from the bottle. 5. Do not remove desiccants or touch test areas. 6. Use within expiration date. Reading the results: Negative: reduce carbohydrates intake or increase excercise. Trace/ small/ moderate: your health is satisfactory and you are burning fat. Large: increase carbohydrates or reduce exercise.
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