sentences:  In certain years and conditions, it may not be financially feasible or reasonable to perform pathogen control to the same extent as it was previously.Because of this, it is in the growers' better interests to invest in crops that have natural resistance to pathogens so that fungicide requirements will be minimized.Though fungicides appear to be effective in preventing and controlling this disease, a variety of management strategies have also been proposed to prevent powdery mildew spread.