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Phomopsis canker, fruit decay and rough bark Phomopsis mali Diaporthe perniciosa [teleomorph] Phymatotrichum root rot = cotton root rot Phymatotrichopsis omnivora = Phymatotrichum omnivorum. Phytophthora crown, collar and root rot = sprinkler rot Phytophthora spp. Phytophthora cactorum Phytophthora cambivora Phytophthora cryptogea Phytophthora ...
In southern Germany apple and pear trees have been a part of the landscape for a long time, and are difficult to protect. The decline of apple and pear trees from their landscape can be expensive to replace and could have a negative effect on tourism. In the long-run, fire blight is a very important factor of economy and society. [citation needed]
Similarly to apple trees, crown rots of strawberries caused by P. cactorum can be partially diagnosed by cutting the crown of the plant and observing brown vascular tissues, and root rots by brown or black stunted roots. [7] Leather rot of strawberry is an additional disease affecting strawberry plants, with P. cactorum being the causal agent ...
This is because cutting too much of the tree can cause it to grow a lot of sprouts, or new branches, which will make the tree focus more on regrowing branches and less time on apple production ...
In Europe it is known as the red-belted clearwing and in North America as the apple clearwing moth. The larvae create galleries under the bark of fruit trees, especially old trees with damaged trunks. During this process, the larvae cause significant damage to host trees. Particular attention has been paid to the damage they cause to apple trees.
Bitter rot of apple is a fungal disease of apple fruit that is caused by several species in the Colletotrichum acutatum and Colletotrichum gloeosporioides species complexes. [1] It is identified by sunken circular lesions with conical intrusions into the apple flesh that appear V-shaped when the apple is cut in half through the center of the ...
On the apple tree, the infections occur on leaves, fruit and young twigs. [4] The brightly colored spots produced on the leaves make it easy to identify. Small, yellow-orange spots appear on the upper surfaces of the leaves, anytime from April to June. [5] These spots gradually enlarge and turn orange or red and may show concentric rings of color.
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