late blight of tomato - phytophthora infestans

agriculture and berries biology blight control danger disease diseased drip drop esculentum farming fruit fungi fungicide fungual fungus garden gardening green grow home infection infest infestans irrigation late leaf lycopersicon macro microorganism mold mould nature parasite pathogen pathology pest pesticide phytopathology phytophthora plague plant problem protection rain rotted science spores summer symptoms tomato water wet