Disease conditions Late blight is a disease of low temperature and high humidity, air relative humidity more than 80% can be successfully infected, the optimum humidity for the development of the bacteria is 20-22 °C during the day and 10 °C or more at night. Low temperature, rainy weather, high humidity, and proneness to disease in the morning and evening in the case of foggy conditions. It is easy to cause diseases in heavily populated areas, partial application of nitrogen fertilizer or excessive density, insufficient light, and poor ventilation. cause First, it is difficult to reverse the rotation. With the expansion of the planting area, it is difficult to turn crops in succession, and continuous cropping will cause the accumulation of pathogens in the soil year by year, which will increase the damage. The second is improper treatment of field strains. Some growers piled up the tops of the crops, without deep-buried or burned. The third is the climate factor. In general, there are more rainy days in autumn, low temperatures, and high humidity in the fields, which creates favorable conditions for the spread of late blight. Fourth, awareness of disease prevention is not strong. Some growers have not adhered to the prevention and control principle of "prevention from the main and prevention from stress." After the onset, the number of medications was not enough, and there was no supplemental spray after the spraying, which resulted in poor control. Crepe Machine,Crepe Making Machine,Crepe Cake Machine,Electric Crepe Maker Guangzhou New Power Catering Equipment Manufacturing Co.,Ltd , https://www.gznewpower.com