Transmission routes and conditions. The pathogens use mycelium to overwinter in diseased leaf tissue. When conditions are suitable, the conidia produced on the lesions spread by air currents and wind and rain and fall to the leaves. Under dew or rain conditions, the spores germinate and produce germ tubes from The stomata or directly penetrates into the epidermis and forms lesions through latent growth. A large number of conidia were produced in the diseased department and repeated infections were repeated several times. The high temperature and humid conditions make it popular. From July to September, the temperature is high and the rainfall is more susceptible to the disease. The onset and severity of the disease each year are related to typhoon and heavy rain. The typhoon scrapes early and the onset is early. The storm is frequent and the incidence is heavy. On the contrary, the onset is late and light. In addition, the re-application of partial nitrogen fertilizer, dense growth, poor ventilation and light transmission, high groundwater level and heavy onset. There are significant differences among breeds.
Prevention methods. 1 selection of disease-resistant varieties. 2 To establish a drainage system for sugarcane fields, remove water in time, and effectively regulate the humidity of sugarcane fields. 3 strengthen management. The diseased leaves and old leaves were stripped in time in high temperature and rainy season, and burned in a centralized manner to reduce the initial infection source. The use of sugar cane formula fertilization technology, pay attention to reasonable application of nitrogen, phosphorus and potassium, to prevent partial application, over-application of nitrogen fertilizer, the ward in the rainy season before the appropriate increase in potassium fertilizer, improve disease resistance. 4 After discovering the central diseased plant, spray 50% phenylenede wettable powder 1000 times or 1:100 times Bordeaux mixture in time and spray it once every 7 days for a total of 3 to 4 times.
Best Goji procuct is in China,China is the origen of Goji Berry.Goji is a traditional,typical food in China.The majority of commercially produced goji comes from Ningxia and Xinjiang in Northwestern China, where they are grown on plantations totaling 200,000 acres.[self-published source] In Zhongning County, Ningxia, wolfberry plantations typically range between 40 and 400 hectares (100–1000 acres or 500–6000 mu) in area. As of 2005, over 10 million mu have been planted with goji in Ningxia.
Ningxia goji has been cultivated along the fertile floodplains of the Yellow River for more than 700 years and have earned a reputation throughout Asia for premium quality sometimes described commercially as "red diamonds". Government releases of annual wolfberry production, premium fruit grades, and export are based on yields from Ningxia, the region recognized with-the largest annual harvest in China, accounting for 45% of the nation's total yield of wolfberries (50,000 tons, 2013);
formation of an industrial association of growers, processors, marketers, and scholars of wolfberry cultivation to promote the berry's commercial and export potential;[16]
the nation's only source of superior grade wolfberries used by practitioners of traditional Chinese medicine.
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