Calonectria gracilis. [Descriptions of Fungi and Bacteria].

1993 ◽  
Author(s):  
P. W. Crous
Keyword(s):  
Geographical Distribution ◽  
Root Rot ◽  
Theobroma Cacao ◽  
Cocos Nucifera ◽  
Malus Sylvestris ◽  
Crown And Root Rot ◽  
Picea Excelsa

Abstract A description is provided for Calonectria gracilis. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Argyreia splendens, Cocos nucifera, Eucalyptus sp., Malus sylvestris, Manilkara sapota, Medicago sp., Pahudia cochinchinensis, Picea excelsa, Theobroma cacao. DISEASE: Root rot of Eucalyptus, crown and root rot of Medicago (67, 2994; 67, 3493). GEOGRAPHICAL DISTRIBUTION: Brazil, Canada, India, Malaysia, Vietnam. TRANSMISSION: Probably wind and splash dispersed.

Phytophthora katsurae. [Distribution map].

1996 ◽  
Author(s):  
Keyword(s):  
Papua New Guinea ◽  
Geographical Distribution ◽  
Cote D'ivoire ◽  
Theobroma Cacao ◽  
Côte D’Ivoire ◽  
Cocos Nucifera ◽  
New Guinea ◽  
Distribution Map ◽  
Castanea Crenata ◽  
New Distribution

Abstract A new distribution map is provided for Phytophthora katsurae W.H. Ko & H.S. Chang. Hosts: Cocoa (Theobroma cacao), coconut (Cocos nucifera), Japanese chestnut (Castanea crenata). Information is given on the geographical distribution in Australia, Queensland, Cote d'Ivoire, Jamaica, Japan, Papua New Guinea, Taiwan, USA, Hawaii.

Pseudotheraptus devastans. [Distribution map].

2019 ◽  
Author(s):  
Keyword(s):  
Burkina Faso ◽  
Geographical Distribution ◽  
Cote D'ivoire ◽  
Theobroma Cacao ◽  
Manihot Esculenta ◽  
Democratic Republic ◽  
Cocos Nucifera ◽  
Anacardium Occidentale ◽  
Distribution Map ◽  
New Distribution

Abstract A new distribution map is provided for Pseudotheraptus devastans Distant. Hemiptera: Coreidae. Hosts: coconut (Cocos nucifera), cassava (Manihot esculenta), cocoa (Theobroma cacao), cashew (Anacardium occidentale). Information is given on the geographical distribution in Africa (Benin, Burkina Faso, Burundi, Cameroon, Congo, Congo Democratic Republic, Cote d'Ivoire, Ghana, Nigeria, Rwanda, Tanzania, Togo).

EVALUATION OF ALFALFA CULTIVARS FOR REACTION TO CROWN AND ROOT ROT

1985 ◽  
Vol 65 (1) ◽  
pp. 95-98 ◽  
Author(s):  
R. MICHAUD ◽  
C. RICHARD
Keyword(s):  
Disease Severity ◽  
Root Rot ◽  
Dry Matter ◽  
Forage Yield ◽  
Dry Matter Yield ◽  
Crown And Root Rot ◽  
Disease Free

Fourteen alfalfa cultivars were grown for 2 yr at three locations and evaluated for forage dry matter yield and crown and root rot. Significant differences were found among cultivars for dry matter yield. All cultivars were affected by crown and root rot, most cultivars showing between 20 and 30% of infected tissues. Differences were observed among as well as within the cultivars for disease severity. The frequency of disease-free plants was less than 1.3% of the plants evaluated. Correlation between root rot index and forage yield was −0.87 [Formula: see text] when data were pooled over years and locations.Key words: Lucerne, root rot, cultivar, yield

scholarly journals Soil Inoculum Production, Survival, and Infectivity of the Boxwood Blight Pathogen, Calonectria pseudonaviculata

Plant Disease ◽  
2015 ◽  
Vol 99 (12) ◽  
pp. 1689-1694 ◽  
Author(s):  
Norm Dart ◽  
Chuanxue Hong ◽  
Caryn Allen Craig ◽  
J. T. Fry ◽  
Xinran Hu
Keyword(s):  
Root Rot ◽  
Soil Inoculum ◽  
Foliar Blight ◽  
High Inoculum ◽  
Inoculum Production ◽  
Foliar Pathogen ◽  
Leaves And Roots ◽  
Crown And Root Rot ◽  
Stem Cankers

Boxwood blight caused by Calonectria pseudonaviculata is typically expressed as a foliage disease with aboveground symptoms including defoliation, dieback and formation of dark narrow stem cankers. Whether this pathogen behaves like other Calonectria spp. and has a significant soil phase in the epidemiology of boxwood blight is not known. In this study we observed experimentally that (1) the boxwood blight pathogen consistently forms microsclerotia in artificially inoculated leaves and roots of Buxus spp., (2) soil artificially inoculated with conidia and microsclerotia of this pathogen can cause foliar blight, (3) conidia and microsclerotia can remain viable in soil for up to 3 and at least 40 weeks, respectively (4) and the pathogen can cause crown and root rot to plants only when roots and crowns are directly exposed to relatively high inoculum levels. Our results suggest that C. pseudonaviculata is primarily a foliar pathogen with a potentially epidemiologically significant soil phase.

scholarly journals Rhizospheric bacteria as potential biocontrol agents against Fusarium wilt and crown and root rot diseases in tomato

2021 ◽  
Author(s):  
Md. Masudur Rahman Khalil ◽  
Rosario Alicia Fierro-Coronado ◽  
Ofelda Peñuelas-Rubio ◽  
Alma Guadalupe Villa-Lerma ◽  
Rigoberto Plascencia-Jatomea ◽  
...  
Keyword(s):  
Fusarium Wilt ◽  
Root Rot ◽  
Biocontrol Agents ◽  
Rhizospheric Bacteria ◽  
Crown And Root Rot

Phytophthora megakarya. [Distribution map].

1996 ◽  
Author(s):  
Keyword(s):  
Geographical Distribution ◽  
Theobroma Cacao ◽  
Equatorial Guinea ◽  
Distribution Map ◽  
Phytophthora Megakarya ◽  
New Distribution

Abstract A new distribution map is provided for Phytophthora megakarya Brasier & M.J. Griffin. Hosts: Cocoa (Theobroma cacao). Information is given on the geographical distribution in Cameroon, Equatorial Guinea, Gabon, Ghana, Guinea, Nigeria, Togo.

Calostilbe striispora. [Descriptions of Fungi and Bacteria].

1973 ◽  
Author(s):  
C. Booth
Keyword(s):  
Costa Rica ◽  
Sierra Leone ◽  
Geographical Distribution ◽  
Hevea Brasiliensis ◽  
Theobroma Cacao ◽  
Experimental Studies

Abstract A description is provided for Calostilbe striispora. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Erythrina glauca, E. poeppigiana, Musa spp., Theobroma cacao, Coffea spp., Cecropiapeltata, Hevea brasiliensis, Erythrina spp. DISEASE: Bark rot of swamp (Bocare) and mountain (Anauca) immortelles in Trinidad and Venezuela; bonnygate disease of banana in Jamaica. GEOGRAPHICAL DISTRIBUTION: Colombia, Costa Rica, Ghana, Jamaica, Sierra Leone, Surinam, Trinidad, Venezuela, Zaire Republic (Congo). TRANSMISSION: Conidia presumably water dispersed; no experimental studies reported.

Gymnosporangium yamadae. [Descriptions of Fungi and Bacteria].

1977 ◽  
Author(s):  
G. Laundon
Keyword(s):  
Geographical Distribution ◽  
Malus Sylvestris ◽  
Juniperus Chinensis

Abstract A description is provided for Gymnosporangium yamadae. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Aecia on apple (Malus sylvestris) and other Malus spp. Telia on Juniperus chinensis. DISEASE: Japanese apple rust. Aecia on leaves rarely on stems and fruit. Telia on globoid swellings or galls of juniper. GEOGRAPHICAL DISTRIBUTION: Japan, Korea, China.

Pythium intermedium. [Descriptions of Fungi and Bacteria].

1964 ◽  
Author(s):  
G. M. Waterhouse
Keyword(s):  
North America ◽  
South America ◽  
Geographical Distribution ◽  
Root Rot ◽  
Crop Plants ◽  
Foot Rot ◽  
Damping Off ◽  
Wide Range

Abstract A description is provided for Pythium intermedium. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On a wide range of hosts represented by the following families: Begoniaceae, Bromeliaceae, Chenopodiaceae, Compositae, Coniferae, Cruciferae, Euphorbiaceae, Geraniaceae, Gramineae, Leguminosae, Liliaceae, Linaceae, Moraceae, Onagraceae, Ranunculaceae, Rosaceae, Solanaceae, Ulmaceae, Violaceae; also in the Equisetales and Filicales. DISEASES: Damping-off of seedlings, foot rot and root rot of ornamentals, occasionally of crop plants and trees. GEOGRAPHICAL DISTRIBUTION: Asia (China); Australia & Oceania (Hawaii); Europe (England, Belgium, France, Germany, Holland, Sweden, U.S.S.R.); North America (U.S.A.); South America (Argentina). TRANSMISSION: A common soil inhabitant.

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