What effect does humidity have on wheat scab?

What effect does humidity have on wheat scab? Please introduce the effect of humidity on the occurrence of wheat scab is greater than that of temperature. Continuous high humidity for a long time is the first condition for the disease. The ascomycetes can only be produced when the soil surface is wet. It is observed that when the relative humidity of the soil surface reaches more than 80%, the ascomycetes are produced quickly and the amount of bacteria is large; when the humidity is about 60%, the production rate of the ascomycetes decreases and the number decreases; when the humidity is less than 30%, the ascomycetes cannot be produced. The release and transmission of ascospores also need high humidity. When the relative humidity of the air is less than 81%, the ascospores can not be radiated, and there are water droplets, which are beneficial to the radiation of ascospores and increase the radiation speed. The main reason is that the water droplets are beneficial to increase the swelling pressure of the ascomycetes after absorbing water, thus promoting the ascospores to radiate. The epidemic degree of wheat scab was significantly positively correlated with the local relative humidity. Within 15-20 days after heading, the number of warm and rainy days over 15 ℃ was more than 50%, the disease was likely to be prevalent. Click to get more wheat planting technology click to get more grain planting technology