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Root rot is a condition in which anoxic conditions in the soil or potting media around the roots of a plant cause them to rot. This occurs due to excessive standing water around the roots. [ 1 ] It is found in both indoor and outdoor plants, although it is more common in indoor plants due to overwatering, heavy potting media, or containers with ...
Some trees were sprayed in 1945 at the end of the growing season and some trees were not. All of the trees that were sprayed in the fall of 1945 survived and produced fruit in 1946. Yields for the unsprayed trees that survived were 36 pounds per tree. Sprayed trees yielded nearly three times more than the controls with 107 pounds per tree. [22]
Leaf spots can vary in size, shape, and color depending on the age and type of the cause or pathogen. Plants, shrubs and trees are weakened by the spots on the leaves as they reduce available foliar space for photosynthesis. Other forms of leaf spot diseases include leaf rust, downy mildew and blights. [4]
Armillaria crown and root rot (shoestring crown and root rot) Armillaria mellea Rhizomorpha subcorticalis [anamorph] Brown rot blossom and twig blight and fruit rot Monilinia fructicola Monilinia laxa. Ceratocystis canker Ceratocystis fimbriata: Cytospora canker Cytospora leucostoma Leucostoma persoonii [teleomorph] Dematophora root rot
Fruit rot appears as small, circular brown spots that increase rapidly in size causing the entire fruit to rot. Greyish spores appear in tufts on rotted areas. [ 4 ] Infected fruit eventually turn into shrivelled, black mummies that may drop or remain attached to the tree through the winter.
Beetroot - rough, cankered patches on roots, internal brown rot. Cabbage - distorted leaves, hollow areas in stems. Cauliflower - poor development of curds, and brown patches. Stems, leafstalks and midribs roughened. Celery - leaf stalks develop cracks on the upper surface, inner tissue is reddish brown. Celeriac - causes brown heart rot.
Peach tree leaves displaying various stages of the shot hole disease: brown spots on the leaf with conidium holders in the middle (center) that eventually fall off, leaving BB-sized holes behind (left) Shot hole disease of apricot leaves. The fungal pathogen Wilsonomyces carpophilus affects members of the Prunus genera. Almond, apricot ...
Pale brown root rot Pseudophaeolus baudonii. Phloem necrosis Phloem necrosis virus (Camellia Virus 1) Phyllosticta leaf spot Phyllosticta erratica Phyllosticta theae. Pink disease Corticium salmonicolor. Poria root rot and stem canker Poria hypobrunnea. Purple root rot Helicobasidium compactum. Red leaf spot Phoma theicola. Red root rot ...