EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Epidemiology and chemical control of godronia cassandrae fusicoccum canker of highbush blueberry


Phytopathology 67(12): 1475-1480
Epidemiology and chemical control of godronia cassandrae fusicoccum canker of highbush blueberry
A Burkard volumetric spore trap in continuous operation for 2 seasons in a highbush blueberry [Vaccinium corymbosum] field heavily infected by G. cassandrae captured only negligible numbers of airborne conidia and ascospores of the pathogen. Rain-dispersed conidia were trapped by means of funnels attached beneath cankers and attached via tubing to jugs for collection. Conidia were most abundant May through mid-June (blossom bud swell to petal fall). The number of conidia trapped ranged up to 1.21 .times. 105 conidia/ml of trapped rain water. Conidia were fewer in number June-Sept. and Oct. (late leaf fall) than during April and May. The frequency of natural field infection was greatest during late April-June. Potted bushes inoculated with conidia also had the highest numbers of infections resulting from the April-June inoculation dates. Wounding was not required for infection since nonwounded inoculated plants consistently were infected during the growing season. Bushes exposed to ascospore inocula failed to become infected. In vitro germination of conidia was favored by temperatures of 22 and 30.degree. C. Mycelial growth and infection of blueberry bushes was favored by temperatures of 10-22.degree. C. In fungicide field plot evaluations, captafol (Difolatan) significantly reduced the numbers of cankers at 1 location by 82-95% [LSD (P = 0.01) = 0.12] and at another location by 52-65% [LSD (P = 0.01) = 0.21].


Accession: 005375740



Related references

Epidemiology and chemical control of Godronia (Fusicoccum) canker of highbush blueberry. Phytopathology 67(12): 1475-1480, 1977

Susceptibility of highbush blueberry (Vaccinium corymbosum L.) cultivars to Godronia canker (Godronia cassandrae f. sp. vaccinii) in Norway. Gartenbauwissenschaft 66(2): 78-84, 2001

Etiology and symptomatology of canker and dieback diseases on highbush blueberries caused by Godronia (Fusicoccum) cassandrae and Diaporthe (Phomopsis) vaccinii. Phytopathology 65(2): 105-110, 1975

Canker of highbush blueberry caused by Godronia cassandrae f. vaccinii (Peck.) Groves. Acta Agrobotanica 31(1/2): 159-171, 1978

Godronia cassandrae f sp vaccinii canker of highbush blueberry restricted by suspected winter sun scald injury. Canadian Plant Disease Survey 56(1): 35, 1976

Leaf spot of Highbush Blueberry caused by Godronia cassandrae f. vaccinii. Can. Pl. Dis. Surv, 50: 2, 93-94, 1970

Leaf spot of highbush blueberry d caused by godronia cassandrae f vaccinii. Canadian Plant Disease Survey 50(2): 93-94, 1970

Anatomical changes in the stems of highbush blueberry vaccinium australe caused by the fungus godronia cassandrae f vaccinii. Acta Agrobotanica 35(1): 101-106, 1982

Etiology and symptomatology of canker and dieback diseases on highbush blueberries caused by godronia cassandrae and diaporthe vaccinii. Phytopathology 65(2): 105-110, 1975

Epidemiology and chemical control of Phomopsis canker of highbush blueberry. Phytopathology 67(12): 1481-1484, 1977