Effect of mulching on web blight of beans in Costa Rica
Mulching was highly effective and superior to chemical treatments for the control of web blight (WB) caused in beans by Rhizoctonia solani, the imperfect state of Thanatephorus cucumeris. Plots were established in fields with a history of repeated incidence of WB. Soilborne sclerotia and colonized d...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Scientific Societies
1983
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/42780 |
| _version_ | 1855543546113687552 |
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| author | Galindo, J.J. Abawi, G.S. Thurston, HD Galvez, G |
| author_browse | Abawi, G.S. Galindo, J.J. Galvez, G Thurston, HD |
| author_facet | Galindo, J.J. Abawi, G.S. Thurston, HD Galvez, G |
| author_sort | Galindo, J.J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Mulching was highly effective and superior to chemical treatments for the control of web blight (WB) caused in beans by Rhizoctonia solani, the imperfect state of Thanatephorus cucumeris. Plots were established in fields with a history of repeated incidence of WB. Soilborne sclerotia and colonized debris spread by splashing rain were the main sources of inoculum for WB in these fields. Mulching with rice husks (2.5 cm thick) greatly reduced splashing of inoculum and lowered disease severity. At harvest, severity of WB in nontreated and mulched plots planted to cultivar Porrillo 70 was 100 and 13%, and seed yield was 0 and 655 kg/ha, respectively. In a second field with a lower level of inoculum, yield in the nontreated and mulched areas averaged 273 and 835 kg/ha, respectively. Similar results were obtained with cultivar Mexico 27. Mulching with rice husks was superior to PCNB soil drench (40 kg 75 WP/ha) in controlling WB. Seed treatment with benomyl (1 g benomyl, 50% WP, per kilogram of seeds) and soil application of paraquat (1 kg a.i./ha) were ineffective. The local production practice of “frijol tapado,” in which seeds are broadcast in vegetation that is later cut and left as mulch, was as effective as rice husk mulching in reducing the incidence and severity of WB, but yields were lower. |
| format | Journal Article |
| id | CGSpace42780 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1983 |
| publishDateRange | 1983 |
| publishDateSort | 1983 |
| publisher | Scientific Societies |
| publisherStr | Scientific Societies |
| record_format | dspace |
| spelling | CGSpace427802024-05-01T08:20:11Z Effect of mulching on web blight of beans in Costa Rica Galindo, J.J. Abawi, G.S. Thurston, HD Galvez, G phaseolus vulgaris rhizoctonia solani disease control chemical control mulching cultivation systems disease transmission mycoses diseases and pathogens pest control cultivation control de enfermedades control químico cobertura del suelo sistemas de cultivo transmision de enfermedades micosis enfermedades y patogenos control de plagas cultivo Mulching was highly effective and superior to chemical treatments for the control of web blight (WB) caused in beans by Rhizoctonia solani, the imperfect state of Thanatephorus cucumeris. Plots were established in fields with a history of repeated incidence of WB. Soilborne sclerotia and colonized debris spread by splashing rain were the main sources of inoculum for WB in these fields. Mulching with rice husks (2.5 cm thick) greatly reduced splashing of inoculum and lowered disease severity. At harvest, severity of WB in nontreated and mulched plots planted to cultivar Porrillo 70 was 100 and 13%, and seed yield was 0 and 655 kg/ha, respectively. In a second field with a lower level of inoculum, yield in the nontreated and mulched areas averaged 273 and 835 kg/ha, respectively. Similar results were obtained with cultivar Mexico 27. Mulching with rice husks was superior to PCNB soil drench (40 kg 75 WP/ha) in controlling WB. Seed treatment with benomyl (1 g benomyl, 50% WP, per kilogram of seeds) and soil application of paraquat (1 kg a.i./ha) were ineffective. The local production practice of “frijol tapado,” in which seeds are broadcast in vegetation that is later cut and left as mulch, was as effective as rice husk mulching in reducing the incidence and severity of WB, but yields were lower. 1983 2014-09-24T07:58:33Z 2014-09-24T07:58:33Z Journal Article https://hdl.handle.net/10568/42780 en Open Access Scientific Societies |
| spellingShingle | phaseolus vulgaris rhizoctonia solani disease control chemical control mulching cultivation systems disease transmission mycoses diseases and pathogens pest control cultivation control de enfermedades control químico cobertura del suelo sistemas de cultivo transmision de enfermedades micosis enfermedades y patogenos control de plagas cultivo Galindo, J.J. Abawi, G.S. Thurston, HD Galvez, G Effect of mulching on web blight of beans in Costa Rica |
| title | Effect of mulching on web blight of beans in Costa Rica |
| title_full | Effect of mulching on web blight of beans in Costa Rica |
| title_fullStr | Effect of mulching on web blight of beans in Costa Rica |
| title_full_unstemmed | Effect of mulching on web blight of beans in Costa Rica |
| title_short | Effect of mulching on web blight of beans in Costa Rica |
| title_sort | effect of mulching on web blight of beans in costa rica |
| topic | phaseolus vulgaris rhizoctonia solani disease control chemical control mulching cultivation systems disease transmission mycoses diseases and pathogens pest control cultivation control de enfermedades control químico cobertura del suelo sistemas de cultivo transmision de enfermedades micosis enfermedades y patogenos control de plagas cultivo |
| url | https://hdl.handle.net/10568/42780 |
| work_keys_str_mv | AT galindojj effectofmulchingonwebblightofbeansincostarica AT abawigs effectofmulchingonwebblightofbeansincostarica AT thurstonhd effectofmulchingonwebblightofbeansincostarica AT galvezg effectofmulchingonwebblightofbeansincostarica |