There are three main types of banana leaf spot, namely brown spot disease, grayish leaf disease, and coal-blotch disease. The gray leaf spot disease is the most serious. In the early stage of disease, the leaf surface appears yellow-brown stripe parallel to the veins, and then expands into an oval or prismatic spot. The later lesions become dark, the center is gray, and the periphery is dark brown. Sporadic gray moldy. Banana leaf spot disease is most susceptible to infection at a temperature of 25-29°C and a relative humidity of 95%. It is usually severe at high temperatures in July-September, and slightly milder after October when temperature gradually eases. How to prevent banana leaf spot disease? The banana farmers should do the following: 1. Work management. Reasonable irrigation and drainage, fertilizer application, control of nitrogen, cutting and burning of diseased leaves, and timely prevention and control of insect pests. Second, good cultivation. Reasonable dense planting to ensure ventilation and ventilation of the banana plantation. Third, the use of drugs. Summer and autumn banana cultivation is applied twice a month from April to late September; spring and summer banana cultivation is applied once every month from mid-May to late December. From May (ie when the banana grows from 13 to 15 leaves), the application of pesticides is started. Sprays are taken every 15 days and sprayed 3 times. Do not spray on the heart of the leaves or fruit, after the typhoon should pay attention to make up the spray. Agents can be used: 40% new suspension suspending agent, 50% banana leaf net wettable powder, 70% Pratax WP, 70% carbon zebrafish WP. The above agents must be used interchangeably. It is best to add a small amount of detergent to the liquid to enhance adhesion.
Franziskaner 450ml ,Light Franziskaner For A Lazy Afternoon,Rich Creamy Franziskaner,Fruit-forward Franziskaner For A Dessert Pairing
Yanbian Baichuan Import and Export Trade Co., LTD , https://www.baichuanbeer.com