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Tar spot is a localized disease that causes mostly cosmetic symptoms and is therefore not a highly controlled disease. [3] One of the best ways to manage the pathogen is through proper sanitation techniques. [3] Because the fungus overwinters in diseased leaf debris, removing the debris in fall can help reduce the occurrence of the disease. [3]
Armadillos burrow in forest areas, but their damage usually consists of dozens of shallow holes a few inches deep in your yard or garden. You also may see three-toed tracks with claw marks.
The symptoms begin with small (1/10-1/4”) reddish or purplish-brown spots with light green or yellow ring around them. As the disease progresses the damaged areas become slightly larger and then dry up and fall away, leaving BB-sized holes behind. As the fungus spreads, more leaf tissue is damaged until the leaf falls.
Stegophora ulmea is a foliar disease of elms commonly known as black spot of elm, twig blight, and elm leaf scab. [1] It is characterized by yellow spots that become black spots on the leaves. The pathogen is an ascomycete fungus native to North America. Stegophora ulmea is its teleomorph name. [2]
Trees that display a thin, weak crown may persist for several years but may also die without displaying any symptoms. [2] Noticeable symptoms on the bole are the cracking of the bark, the formation of cankers, and beech snap, in which the trunk snaps above head height, under stress from wind as a result of the fungi weakening the wood.
A leaf spot is a limited, discoloured, diseased area of a leaf that is caused by fungal, bacterial or viral plant diseases, or by injuries from nematodes, insects, environmental factors, toxicity or herbicides. These discoloured spots or lesions often have a centre of necrosis (cell death). [1]
These are animals that eat or destroy durian fruit or trees. Many of these are shot or poisoned by farmers. [6] Some of these species naturally act as seed dispersers, [7] which benefits the plant but does not benefit farmers.
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