![]() CADILAC 800WP 50g/20l (for prevention purposes).The following fungicides are effective against early blight disease. This method of control involves the use of chemicals (fungicides). These lesions could be covered with a mass of black fungal growth as infection progresses. Fruits that are infected with this disease have lesions which appear leathery and may also contain the concentric rings.Infection continues even in storage causing the tubers to shrivel. Tuber tissue is usually dry, brown and leathery. Infected tubers develop dark sunken lesions which are usually surrounded by a purple-like raised margin.On stems, lesion start as small, dark and slightly sunken regions which enlarge as infection continues.Infected leaves become chlorotic then necrotic and this may cause defoliation. These lesions are dry and papery and develop characteristic concentric rings of raised and necrotic tissue as infection progresses. Brown lesions develop on older leaves.Spores invade the plant tissues either through direct penetration or through injured/damaged areas.ĭespite its name ‘early blight’, symptoms usually develop on the older leaves, mostly, nearing the end of the season. ![]() Older leaves and those under stress are more susceptible. The fungus produces a lot of spores under cool and moist conditions which are then blown by wind or splashed by water to adjacent plants to initiate infection.Įvery part of the crop can be infected with this disease, eventually forming lesions. The pathogen overwinters in infected plant materials in the soil or even on solanaceous weeds. ![]() The disease can also occur on other solanaceous crops like eggplant, capsicum etc. Early blight is a fungal disease caused by a fungus Alternaria solani, which mostly affects tomato and potato plants, causing significant losses if not effectively controlled. ![]()
0 Comments
Leave a Reply. |