pyrenophora

agricultural agriculture agronomical agronomy algeria algiers antrachnosis bean cereal chemical damage death disease diseased downy environment fabaceae famin famine farm field food fructification fungi fungicide fungus garlic green greenhouse health healthy helminthosporium ill intensive irish leaf leaves legume life loss losses microbiology mildew modern mycelium mycology natural nature necrosis organic pathological pathology pea pest photosynthesis phytopathology pisi plant powder powdery production pycnid pyrenophora rust rusty septoria septoriosis sick spore spot spp teliospore ten treatment uredospore weed wheat white