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Phyllosticta concava, also known as opuntia dry rot [1] or prickly pear brown spot, is a species of fungus that infects opuntia cactus, leaving discolored circular depressions in the pads. [ 2 ] [ 3 ] The species was first formally described by the mycologist Fred Jay Seaver in 1922.
Small water-soaked lesions, maturing into sunken and brown spots with or without a yellow halo. May show concentric rings with purple margins. Necrotic tissue may fall out to appear shot-holed. Leaf spot on many plants and crops. Septoria: Small brown spots, that turns light tan to white in the centre. Leaf spot on many crops Bipolaris
These are the most common causes of brown spots on fiddle leaf fig foliage, plus simple tips for restoring your plant’s health.
Plants affected: Cactus cyst nematode Cactodera cacti = Heterodera cacti. Many cacti Viral diseases. Viral diseases; Common name: Scientific name: Plants affected:
The post Why Does My Plant Have Brown Tips on the Leaves? appeared first on Reader's Digest. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 ...
Mycosphaerella henningsii is a fungal plant pathogen that causes Brown leaf spot (BLS) in cassava).Part It is one of the worst fungal diseases of cassava. BLS disease appears as small brown spots with dark borders on the upper leaf surface. The brown spots form between leaf veins so their size and shape are limited by the veins.
The symptoms of Drechslera leaf spot are mostly small, dark-brown, or purplish spots on the leaves. [1] The spots eventually expand and become lighter-brown or ashy in the middle (usually having dark margins around the center). Once the spots run together, girdling of the entire leaf blade occurs.
Most commonly Cephaleuros virescens is identified by the leaf spots it causes. Theses leaf spots are an orange-brown rust in color and usually occur entirely on the upper leaf surface, although leaf spots on the undersides of infected leaves have been reported. The spots are fuzzy in texture and approximately 2 cm (0.8 in) in diameter. [2]