scholarly journals Sensitivity of Corynespora cassicola, causal agent of Corynespora target spot of tomato, to thiophanate-methyl and diethofencarb.

2004 ◽  
Vol 70 (1) ◽  
pp. 7-9 ◽  
Author(s):  
H. DATE ◽  
E. KATAOKA ◽  
K. TANINA ◽  
S. SASAKI ◽  
K. INOUE ◽  
...  
Keyword(s):  
Causal Agent ◽  
Thiophanate Methyl ◽  
Target Spot

scholarly journals Reaction of hybrids, inhibition in vitro and target spot control in cucumber

2011 ◽  
Vol 29 (3) ◽  
pp. 342-348 ◽  
Author(s):  
Adriana Teramoto ◽  
Marise C Martins ◽  
Luciene C Ferreira ◽  
Marcos G Cunha
Keyword(s):  
Mycelial Growth ◽  
Climatic Conditions ◽  
Control Measures ◽  
Corynespora Cassiicola ◽  
Horticultural Crop ◽  
Thiophanate Methyl ◽  
Chemical Treatments ◽  
Target Spot ◽  
Efficient Control

The fungus Corynespora cassiicola is the causal agent of target spot in cucumber. Under favorable climatic conditions it can cause serious damage in this horticultural crop. In Brazil, there exists not enough knowledge to determine efficient control measures to the disease. This investigation was carried out to evaluate: a) the reactions of nine cucumber hybrids to C. cassiicola; b) the sensibility of six isolates of C. cassiicola to fungicides in vitro (captan, chlorothalonil, mancozeb, azoxystrobin, difenoconazole, carbendazin, tebuconazole and thiophanate-methyl), used in concentrations of 0, 1, 10, 100 and 1,000 µg mL-1 of active ingredient and c) protective and curative chemical treatments with the same fungicides used in vitro in cucumber plants inoculated with C. cassiicola. The cucumber hybrids were evaluated using the scale of notes and diagrammatic of target spot severity. The more resistant hybrids to the pathogen were Taisho, Nikkey, Yoshinari and Safira. The difenoconazole fungicide caused the most mycelial growth inhibition (MGI) and showed the lowest ED50. Thiophanate-methyl was the worst fungicide, it did not inhibit the mycelial growth of the fungus. Azoxystrobin was the most efficient in controlling the disease, although it has to be registered in Ministry of Agriculture, Livestock and Food Supply in Brazil before its recommendation.

scholarly journals Sensitivity of Corynespora cassicola, causal agent of Corynespora leaf spot of cucumber, to thiophanate-methyl, diethofencarb and azoxystrobin.

2004 ◽  
Vol 70 (1) ◽  
pp. 10-13 ◽  
Author(s):  
H. DATE ◽  
E. KATAOKA ◽  
K. TANINA ◽  
S. SASAKI ◽  
K. INOUE ◽  
...  
Keyword(s):  
Leaf Spot ◽  
Causal Agent ◽  
Thiophanate Methyl

First Report of Target Spot Caused by Corynespora cassiicola in Louisiana Cotton

2015 ◽  
Vol 16 (4) ◽  
pp. 223-224 ◽  
Author(s):  
Trey Price ◽  
Raghuwinder Singh ◽  
Dan Fromme
Keyword(s):  
Causal Agent ◽  
Corynespora Cassiicola ◽  
Koch’S Postulates ◽  
First Report ◽  
Target Spot ◽  
Koch's Postulates

During the summer of 2014, Louisiana cotton producers in 13 parishes experienced an outbreak of what appeared to be target spot caused by Corynespora cassiicola. Defoliation due to the suspected disease was observed up to 75% in isolated areas. An isolate of the suspected causal agent was obtained, and Koch's postulates were subsequently completed. This is the first report of this disease in Louisiana. Accepted for publication 30 November 2015. Published 3 December 2015.

Phytotoxic tetranorditerpenoids from the fungus Sclerotinia homoeocarpa, causal agent of dollar spot in turfgrass

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
HMT Herath ◽  
WHMW Herath ◽  
SO Duke ◽  
M Tomaso-Peterson ◽  
NPD Nanayakkara
Keyword(s):  
Causal Agent ◽  
Sclerotinia Homoeocarpa ◽  
Dollar Spot

Constituents from Morus root bark against Venturia inaequalis – the causal agent of apple scab

Planta Medica ◽  
2007 ◽  
Vol 73 (09) ◽  
Author(s):  
JM Rollinger ◽  
R Spitaler ◽  
M Menz ◽  
P Schneider ◽  
EP Ellmerer ◽  
...  
Keyword(s):  
Venturia Inaequalis ◽  
Apple Scab ◽  
Causal Agent ◽  
Root Bark

Colletotrichum Gloeosporioides Species Complex: Pathogen Causing Anthracnose, Gummosis and Die-Back Diseases of Cashew (Anacardium Occidentale L.) In Ghana

2020 ◽  
Vol 2 (6) ◽  
Author(s):  
A. Muntala ◽  
P. M. Norshie ◽  
K. G. Santo ◽  
C. K. S. Saba
Keyword(s):  
Species Complex ◽  
Colletotrichum Gloeosporioides ◽  
Potato Dextrose Agar ◽  
Causal Agent ◽  
Anacardium Occidentale ◽  
Causative Organism ◽  
Pathogenicity Test ◽  
Small Water ◽  
Colletotrichum Gloeosporioides Species Complex

A survey was conducted in twenty-five cashew (Anacardium occidentale) orchards in five communities in the Dormaa-Central Municipality of Bono Region of Ghana to assess the incidence and severity of anthracnose, gummosis and die-back diseases on cashew. Cashew diseased samples of leaves, stem, inflorescences, twigs, flowers, nuts and apples showing symptoms (e. g. small, water-soaked, circular or irregular yellow, dark or brown spots or lesions on leaves, fruits and flowers, sunken surface, especially on the apples, blight, gum exudates) were collected for isolation of presumptive causative organism. The pathogen was isolated after disinfecting the excised diseased pieces in 70% ethanol, plated on potato dextrose agar (PDA) and incubated at 28 oC for 3 to 7 days. The identity of the putative pathogen was morphologically and culturally confirmed as belonging to Colletotrichum gloeosporioides species complex using standard mycological identification protocols. The pathogen had varied conidia sizes of between 9-15 up to 20 μm in length and diameter of 3-6 μm. The conidia were straight and cylindrically shaped with rounded or obtuse ends. The septate mycelium was whitish-grey, velvety and cotton-like in appearance from the top. The results confirmed the presence of the pathogen in the orchards with incidence ranging from 6.9% and 14.0% for gummosis and averaged 22.9% for anthracnose infected orchards. The result of the pathogenicity test confirmed the isolates to be pathogenic on inoculated cashew seedlings and were consistently re-isolated, thereby establishing the pathogen as the true causal agent of the said diseases in cashew trees and thus completed the Koch’s postulate.

Effects of Bacillus velezensis on Fusarium avenaceum, a causal agent of post-harvest apple fruit rot

2020 ◽  
Author(s):  
Mladen Petres ◽  
Marta Loc ◽  
Mila Grahovac ◽  
Vera Stojsin ◽  
Dragana Budakov ◽  
...  
Keyword(s):  
Apple Fruit ◽  
Causal Agent ◽  
Fruit Rot ◽  
Fusarium Avenaceum ◽  
Bacillus Velezensis ◽  
Post Harvest
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