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Black spot (of Japanese pear) Alternaria alternata. Blister canker Helminthosporium papulosum. Blister disease Coniothecium chomatosporum: Blue mold rot Penicillium spp. Penicillium expansum. Botrytis spur and blossom blight Botrytis cinerea Botryotinia fuckeliana [teleomorph] Brown rot Monilinia fructicola Monilinia laxa. Cladosporium fruit rot
As the leaves develop, they become increasingly distorted, and ultimately thick and rubbery compared to normal leaves. The color of the leaves changes from the normal green to red and purple, until a whitish bloom covers each leaf. Finally, the dead leaf may dry and turn black before it is cast off. Changes in the bark are less noticeable, if ...
Plant diseases which affect fruit trees. ... Pear tree diseases (21 P) S. Stone fruit tree diseases (53 P)
Stroma is located in the black lesions of the infected leaves. [2] Conidiophores form non-infectious conidia that are released both in conditions of wetness and drought. [ 2 ] [ 7 ] The most favorable environment for the pathogen is when there is an extended period of moisture such as fog or rain, which prevents the leaves from drying out. [ 8 ]
A magnolia tree on the west side of Jackson City Hall in Jackson, Miss., seen Tuesday, Feb. 20, 2024, is just one of a number trees in metro Jackson lost to the drought conditions last summer.
The corresponding stage on the pear trees is known as aecia. The telia and aecia release wind borne resting or hibernating spores (called teliospores and aeciospores) capable of infecting susceptible pear leaves and Juniper respectively. Spores produced from the fungus-induced swellings on juniper stems can be infectious up to 6 km.
While the Bradford pear tree is a sterile cultivar that can’t pollinate itself, it can cross-pollinate with other types of pear trees to create a wild hybrid tree. These vigorous hybrids produce ...
Pages in category "Pear tree diseases" The following 21 pages are in this category, out of 21 total. This list may not reflect recent changes. * List of pear diseases; C.