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Septoria lycopersici infects the tomato leaves via the stomata and also by direct penetration of epidermal cells. [3] Symptoms generally include circular or angular lesions most commonly found on the older, lower leaves of the plant. [1] The lesions are generally 2–5 mm in diameter and have a greyish center with brown margins.
On tomato, foliar symptoms of A. solani generally occur on the oldest leaves and start as small lesions that are brown to black in color. These leaf spots resemble concentric rings – a distinguishing characteristic of the pathogen – and measure up to 1.3 cm (0.51 in) in diameter. [11]
Tomato brown rugose fruit virus (ToBRFV) is a plant virus in the genus Tobamovirus that was first described in 2015. It has spread rapidly since it was first noted in Jordan and Israel. The main hosts are tomato and peppers. The virus causes symptoms including mosaic and distortion of leaves and brown, wrinkly spots (rugose) on fruits.
Anastasia Borisevich, resident plant expert at Plantum. Overwatering. Overwatering can lead to root rot, causing your plant's leaves to turn brown. “Roots that are constantly exposed to too much ...
[1] [2] Wilt, stunting and lack of vigor can be observed as the primary symptoms, and infected leaves can possibly show interveinal chlorosis that leads to premature defoliation. [ 3 ] [ 4 ] The distinctive characteristic of P. lycopersici is that it causes brown lesions on the surface of medium roots which are known as a brown root rot. [ 4 ]
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Tomato mosaic Tomato mosaic virus Tomato mottle Tomato mottle geminivirus: Tomato necrosis Alfalfa mosaic virus: Tomato spotted wilt Tomato spotted wilt virus: Tomato yellow leaf curl Tomato yellow leaf curl virus: Tomato yellow top Tomato yellow top virus: Tomato bunchy top: Potato spindle tuber viroid [5] Tomato planto macho Tomato planto ...
Reddish lesions at first then enlarges and becomes white to light brown in the centre. Circular and varying in size. Can appear concentric with red margins. Leaf spot on most cereals and grasses, field crops, vegetables, ornamentals, and trees. Myrothecium roridum: Target-like spots with light brown centres and dark circumference on Gardenia ...