Integrated management of itchgrass (Rottboellia cochinchinensis) in maize in seasonally-dry Central America: facts and perspectives
Itchgrass (Rottboellia cochinchinensis) is a serious and persistent weed problem in many tropical agricultural and conservation areas. In Central America it is one of the most noxious and serious weeds in several upland crops, causing severe yield losses. Experimentally, pre-emergence control with herbicides, weed elimination during the fallow period and zero tillage reduced itchgrass populations in comparison to conventional practices used growers (no fallow management, soil preparation by disc harrowing and limited use of in-crop herbicides. Additional improvement in itchgrass management is brought about by inter-sowing legume cover crops. Of several legumes evaluated, mucuna (Mucuna deeringiana) and Canavalia ensiformis controlled the weed better and covered the soil, especially if planted simultaneously with maize. Itchgrass suppression by mucuna usually corresponded with increased grain yields but competition by the cover crop could reduce yields
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(RU) Centro Agronómico Tropical de Investigación y Enseñanza (CATIE)
1999
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| Subjects: | ZEA MAYS, ROTTBOELLIA COCHINCHINENSIS, MUCUNA DEERINGIANA, CANAVALIA ENSIFORMIS, COMPETENCIA BIOLOGICA, SOSTENIBILIDAD, PLANTAS DE COBERTURA, CONTROL BIOLOGICO, AMERICA CENTRAL, |
| Online Access: | https://repositorio.catie.ac.cr/handle/11554/2566 |
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ZEA MAYS ROTTBOELLIA COCHINCHINENSIS MUCUNA DEERINGIANA CANAVALIA ENSIFORMIS COMPETENCIA BIOLOGICA SOSTENIBILIDAD PLANTAS DE COBERTURA CONTROL BIOLOGICO AMERICA CENTRAL ZEA MAYS ROTTBOELLIA COCHINCHINENSIS MUCUNA DEERINGIANA CANAVALIA ENSIFORMIS COMPETENCIA BIOLOGICA SOSTENIBILIDAD PLANTAS DE COBERTURA CONTROL BIOLOGICO AMERICA CENTRAL |
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ZEA MAYS ROTTBOELLIA COCHINCHINENSIS MUCUNA DEERINGIANA CANAVALIA ENSIFORMIS COMPETENCIA BIOLOGICA SOSTENIBILIDAD PLANTAS DE COBERTURA CONTROL BIOLOGICO AMERICA CENTRAL ZEA MAYS ROTTBOELLIA COCHINCHINENSIS MUCUNA DEERINGIANA CANAVALIA ENSIFORMIS COMPETENCIA BIOLOGICA SOSTENIBILIDAD PLANTAS DE COBERTURA CONTROL BIOLOGICO AMERICA CENTRAL 127175 Valverde, B.E. 93671 Merayo, A. 109651 Reeder. R. 110625 Riches, Charles R. 3628 Brighton Crop Protection Council, Surrey (RU) 1999 Brighton Conference - Weeds Brighton (RU) 1999 Integrated management of itchgrass (Rottboellia cochinchinensis) in maize in seasonally-dry Central America: facts and perspectives |
| description |
Itchgrass (Rottboellia cochinchinensis) is a serious and persistent weed problem in many tropical agricultural and conservation areas. In Central America it is one of the most noxious and serious weeds in several upland crops, causing severe yield losses. Experimentally, pre-emergence control with herbicides, weed elimination during the fallow period and zero tillage reduced itchgrass populations in comparison to conventional practices used growers (no fallow management, soil preparation by disc harrowing and limited use of in-crop herbicides. Additional improvement in itchgrass management is brought about by inter-sowing legume cover crops. Of several legumes evaluated, mucuna (Mucuna deeringiana) and Canavalia ensiformis controlled the weed better and covered the soil, especially if planted simultaneously with maize. Itchgrass suppression by mucuna usually corresponded with increased grain yields but competition by the cover crop could reduce yields |
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ZEA MAYS ROTTBOELLIA COCHINCHINENSIS MUCUNA DEERINGIANA CANAVALIA ENSIFORMIS COMPETENCIA BIOLOGICA SOSTENIBILIDAD PLANTAS DE COBERTURA CONTROL BIOLOGICO AMERICA CENTRAL |
| author |
127175 Valverde, B.E. 93671 Merayo, A. 109651 Reeder. R. 110625 Riches, Charles R. 3628 Brighton Crop Protection Council, Surrey (RU) 1999 Brighton Conference - Weeds Brighton (RU) 1999 |
| author_facet |
127175 Valverde, B.E. 93671 Merayo, A. 109651 Reeder. R. 110625 Riches, Charles R. 3628 Brighton Crop Protection Council, Surrey (RU) 1999 Brighton Conference - Weeds Brighton (RU) 1999 |
| author_sort |
127175 Valverde, B.E. |
| title |
Integrated management of itchgrass (Rottboellia cochinchinensis) in maize in seasonally-dry Central America: facts and perspectives |
| title_short |
Integrated management of itchgrass (Rottboellia cochinchinensis) in maize in seasonally-dry Central America: facts and perspectives |
| title_full |
Integrated management of itchgrass (Rottboellia cochinchinensis) in maize in seasonally-dry Central America: facts and perspectives |
| title_fullStr |
Integrated management of itchgrass (Rottboellia cochinchinensis) in maize in seasonally-dry Central America: facts and perspectives |
| title_full_unstemmed |
Integrated management of itchgrass (Rottboellia cochinchinensis) in maize in seasonally-dry Central America: facts and perspectives |
| title_sort |
integrated management of itchgrass (rottboellia cochinchinensis) in maize in seasonally-dry central america: facts and perspectives |
| publisher |
(RU) Centro Agronómico Tropical de Investigación y Enseñanza (CATIE) |
| publishDate |
1999 |
| url |
https://repositorio.catie.ac.cr/handle/11554/2566 |
| work_keys_str_mv |
AT 127175valverdebe integratedmanagementofitchgrassrottboelliacochinchinensisinmaizeinseasonallydrycentralamericafactsandperspectives AT 93671merayoa integratedmanagementofitchgrassrottboelliacochinchinensisinmaizeinseasonallydrycentralamericafactsandperspectives AT 109651reederr integratedmanagementofitchgrassrottboelliacochinchinensisinmaizeinseasonallydrycentralamericafactsandperspectives AT 110625richescharlesr integratedmanagementofitchgrassrottboelliacochinchinensisinmaizeinseasonallydrycentralamericafactsandperspectives AT 3628brightoncropprotectioncouncilsurreyru integratedmanagementofitchgrassrottboelliacochinchinensisinmaizeinseasonallydrycentralamericafactsandperspectives AT 1999brightonconferenceweedsbrightonru1999 integratedmanagementofitchgrassrottboelliacochinchinensisinmaizeinseasonallydrycentralamericafactsandperspectives |
| _version_ |
1756062877026877440 |
| spelling |
KOHA-OAI-BVE:1110902022-06-14T22:21:30ZIntegrated management of itchgrass (Rottboellia cochinchinensis) in maize in seasonally-dry Central America: facts and perspectives 127175 Valverde, B.E. 93671 Merayo, A. 109651 Reeder. R. 110625 Riches, Charles R. 3628 Brighton Crop Protection Council, Surrey (RU) 1999 Brighton Conference - Weeds Brighton (RU) 1999 (RU) Centro Agronómico Tropical de Investigación y Enseñanza (CATIE)1999spapdfItchgrass (Rottboellia cochinchinensis) is a serious and persistent weed problem in many tropical agricultural and conservation areas. In Central America it is one of the most noxious and serious weeds in several upland crops, causing severe yield losses. Experimentally, pre-emergence control with herbicides, weed elimination during the fallow period and zero tillage reduced itchgrass populations in comparison to conventional practices used growers (no fallow management, soil preparation by disc harrowing and limited use of in-crop herbicides. Additional improvement in itchgrass management is brought about by inter-sowing legume cover crops. Of several legumes evaluated, mucuna (Mucuna deeringiana) and Canavalia ensiformis controlled the weed better and covered the soil, especially if planted simultaneously with maize. Itchgrass suppression by mucuna usually corresponded with increased grain yields but competition by the cover crop could reduce yieldsa good compromise is to delay mucuna planting by two weeks in relation to maize. Integrated tactics to control itchgrass were evaluated in on-farm validation plots. Pendimethalin controlled itchgrass at the onset of validation plots and facilitated the establishment of the cover crop. Itchgrass densities were lower in validation plots than in grower's fields while infestation levels and the soil seed bank decreased over three years with integrated management. In general, corn yields were also higher in validation plots. Integrated itchgrass management also proved economically feasible for smallholders. A promising alternative is biological control with the itchgrass smut, Sporisorium ophiuru, which prevents seed set and its host specificIncluye 22 referencias bibliográficas.Itchgrass (Rottboellia cochinchinensis) is a serious and persistent weed problem in many tropical agricultural and conservation areas. In Central America it is one of the most noxious and serious weeds in several upland crops, causing severe yield losses. Experimentally, pre-emergence control with herbicides, weed elimination during the fallow period and zero tillage reduced itchgrass populations in comparison to conventional practices used growers (no fallow management, soil preparation by disc harrowing and limited use of in-crop herbicides. Additional improvement in itchgrass management is brought about by inter-sowing legume cover crops. Of several legumes evaluated, mucuna (Mucuna deeringiana) and Canavalia ensiformis controlled the weed better and covered the soil, especially if planted simultaneously with maize. Itchgrass suppression by mucuna usually corresponded with increased grain yields but competition by the cover crop could reduce yieldsa good compromise is to delay mucuna planting by two weeks in relation to maize. Integrated tactics to control itchgrass were evaluated in on-farm validation plots. Pendimethalin controlled itchgrass at the onset of validation plots and facilitated the establishment of the cover crop. Itchgrass densities were lower in validation plots than in grower's fields while infestation levels and the soil seed bank decreased over three years with integrated management. In general, corn yields were also higher in validation plots. Integrated itchgrass management also proved economically feasible for smallholders. A promising alternative is biological control with the itchgrass smut, Sporisorium ophiuru, which prevents seed set and its host specificZEA MAYSROTTBOELLIA COCHINCHINENSISMUCUNA DEERINGIANACANAVALIA ENSIFORMISCOMPETENCIA BIOLOGICASOSTENIBILIDADPLANTAS DE COBERTURACONTROL BIOLOGICOAMERICA CENTRALhttps://repositorio.catie.ac.cr/handle/11554/2566 |