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Sclerotinia sclerotiorum is a plant pathogenic fungus and can cause a disease called white mold if conditions are conducive. S. sclerotiorum can also be known as cottony rot, watery soft rot, stem rot, drop, crown rot and blossom blight.
Bordeaux mixture has been found to be harmful to fish, livestock and—due to potential buildup of copper in the soil—earthworms. [1] [2] The chemical was in use as a blight preventive in the potato country of northern Maine by 1921. [5] It started to be used by the United Fruit Company throughout Latin America around 1922.
Soil pH should be tested, and corrected if needed, because calcium deficiency is often associated with low pH. [14] [15] [citation needed] [16] Early fruit will generally have the worst symptoms, with them typically lessening as the season progresses. Preventative measures, such as irrigating prior to especially high temperatures and stable ...
Removing blighted trees to control the disease was first attempted when the blight was discovered, but this proved to be an ineffective solution. Scientists then set out to introduce a hyperparasitic hypovirus into the chestnut blight fungus. The trees infected with virus-treated fungus responded immediately and began to heal over their cankers.
Gummy stem blight is a cucurbit-rot disease caused by the fungal plant pathogen Didymella bryoniae (anamorph Phoma cucurbitacearum). [1] Gummy stem blight can affect a host at any stage of growth in its development and affects all parts of the host including leaves, stems and fruits. [ 1 ]
In the spring buds may fail to break, lateral branches may appear wilted, or canes may die as the fruit begins to ripen. Canes can also break or appear brittle near infection sites. [3] Signs of cane blight include small black raised specks, which are the sporocarps, or fruiting bodies called pycnidia and/or pseudothecia. [4]
Alternaria solani is a fungal pathogen that produces a disease in tomato and potato plants called early blight. The pathogen produces distinctive "bullseye" patterned leaf spots and can also cause stem lesions and fruit rot on tomato and tuber blight on potato. Despite the name "early", foliar symptoms usually occur on older leaves. [3]
Raspberry spur blight is caused by the fungus Didymella applanata. [2] This plant pathogen is more problematic on red raspberries (Rubus idaeus) than on black or purple raspberries. The fungus infects the leaves first and then spreads to the cane. It causes necrotic spots on the cane near the base of the petiole attachment. [3]