Abstract Alternative strategies in plant protection are required due to political and environmental conditions. Basic substances can potentially benefit for modern conventional organic horticulture. In the case of ornamentals, little is known about effect basic within canopy reduce foliar diseases. Podosphaera pannosa one most severe diseases production cut roses. this study, different cultivar...

The powdery mildew fungi are obligate biotrophic plant pathogens that develop a specialized structure for parasitism termed haustorium, which is responsible for nutrient uptake and factor exchange with the plant. In this work, we present a detailed microscopy analysis of the haustoria of the cucurbit powdery mildew fungus Podosphaera xanthii, a major limiting factor for cucurbit production worl...