purplish cankers

Listing 1 - 10 from 19 for purplish cankers

Cane Blight of Raspberries, HYG-3202-94
... canes (primocanes) dark brown-to-purplish cankers form on new canes near the end of the season where pruning, insect, and other wounds are present. The cankers enlarge and extend down the cane ... , usually between blossoming and fruit ripening. Upon close examination, the presence of dark brown or purplish cankers can be observed on the main cane or branches below the wilted area. Causal Organism ...
ohioline.osu.edu

Flowering Dogwood
... leaves, stems, flowers and buds. Spots are usually small (1/25 inch) with reddish or purplish borders. Severe infestations can prevent flower buds from opening, distort leaves and weaken trees. Discula ... on the infected side of the tree but become more general as the canker enlarges. Cankers normally can not be controlled after infection occurs. Avoid trunk wounds during and after planting ...
edis.ifas.ufl.edu

Anthracnose of Raspberry and Blackberry, HYG-3007-94
... "gray bark." Symptoms Anthracnose first appears in the spring on the young shoots as small, purplish, slightly raised or sunken spots. Later, they enlarge and become ash gray in the center ... often so close together on black and purple raspberries that they form large irregular areas (cankers). The cankers may encircle the cane, sometimes causing the death of the cane beyond the canker ...
ohioline.osu.edu

Vegetable Crops Pt1
... dark brown with purplish to red borders. In early stages, the fungus develops along the veins and becomes purplish to red in color ... stunted. A reddish-brown canker is formed on the stem. Cankers may completely girdle the stem or may only partially girdle it ... shot-hole" appearance. Symptoms on fruits consist of circular, black, sunken, cankers varying in size depending on the host plant. When abundant ...
plantpathology.tamu.edu

Fruit5
... purplish cast with brown centers. Twig infections are small, sunken, reddish-brown areas. The organism overwinters in cankers, decayed fruit, and dead wood. In the spring spores are formed in the cankers ... Pseudomonas syringae): Cankers develop at the base of infected buds on trunk and scaffold limbs. Cankers ... the outside of the tree. Cankers have a soured smell. Cankers start development in the fall ...
plantpathology.tamu.edu More from this site

Fruit Pathology - Disease Diagnostic Key
... ) 10b. Infection not restricted to calyx end. (11) 11a. Lesions 1-5 mm in diameter, purplish black in color associated with stomata, primarily on Mutsu (Crispin) variety. BLISTER SPOT (Pseudomonas syringae ... blemishes on fruits. (11) 7c. Distinct lesions on leaves and fruits accompanied by twig cankers. (10) 7d. Cankers on twigs or branches only. (13) 7e. Blossom blight. (12) 7f. Small to large ...
www.caf.wvu.edu

Woolly Apple Aphid
... a woolly mass of long, waxy fibers. Adult: The adults are purplish and nearly covered by a woolly mass of long, waxy fibers. ... United States and Canada. Injury or Damage White, cottony masses cover purplish aphids clustered in wounds on the trunk and branches of the ... found on the twigs, water sprouts and callus tissue in wounds, cankers and scars. Wingless females in the aerial colonies may give birth ...
www.canr.msu.edu

VT Forestry I.D. Cards - American chestnut
... less than 20 feet tall. Larger stems are often deformed by blight and sprouting below cankers. Notes: VT Forestry I.D. Cards - scarlet oak scarlet oak Fagaceae Quercus coccinea Leaf: ... inches long, essentially hairless, green above and slightly paler below. Flower:Dioecious; light green to purplish, both sexes lacking petals, females occuring in loose panicles, males in tighter clusters, appear ...
www.cnr.vt.edu

AVOCADO Fruit Facts
... after harvest and is impossible to detect on outside. Mexican types are immune to trunk cankers but the fruit is not. The disease is rampant near the coast and has no ... . Mexican. Tree tall and spreading, vigorous. Fruit small, 5 oz., round pyriform, skin paper-thin, purplish black, waxy bloom. Flesh highest quality, seed very large. Hardiest cv. known, seedlings useful as ...
www.crfg.org

MULBERRY Fruit Facts
... bleed a lot. Pests and Diseases: Mulberries are generally free of pests and diseases, although cankers and dieback can occur. In some areas "popcorn disease" is an occasional problem, in which ... tree is fairly drought-resistant once established. Collier M. alba X M. rubra. Medium-sized, purplish-black fruit, 1-1/8 inches long and 3/8 inch in diameter. Flavor sweet ...
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