Yield and growth features of Panicum maximum (Jacq.) var Trichoglume cv Petrie (Green Panic) under woody cover, Chaco region, Argentina
Secondary forests and shrub thickets with low suitability for cattle raising are widespread in the Chaco region (NW Argentina). Concerns about the ecological sustainability of these ecosystems favor vegetation clearing methods for improving standing forage and accessibility for livestock operations...
| Main Authors: | , , , , , |
|---|---|
| Format: | Artículo |
| Language: | Inglés |
| Published: |
2018
|
| Subjects: | |
| Online Access: | https://link.springer.com/article/10.1007/s10457-013-9663-4 http://hdl.handle.net/20.500.12123/2616 https://doi.org/10.1007/s10457-013-9663-4 |
| _version_ | 1855483087699312640 |
|---|---|
| author | Kunst, Carlos Roberto Ledesma, Roxana Ramona Castañares, M.G. Cornacchione, Monica Van Meer, Howard Godoy, Jose Alberto |
| author_browse | Castañares, M.G. Cornacchione, Monica Godoy, Jose Alberto Kunst, Carlos Roberto Ledesma, Roxana Ramona Van Meer, Howard |
| author_facet | Kunst, Carlos Roberto Ledesma, Roxana Ramona Castañares, M.G. Cornacchione, Monica Van Meer, Howard Godoy, Jose Alberto |
| author_sort | Kunst, Carlos Roberto |
| collection | INTA Digital |
| description | Secondary forests and shrub thickets with low suitability for cattle raising are widespread in the Chaco region (NW Argentina). Concerns about the ecological sustainability of these ecosystems favor vegetation clearing methods for improving standing forage and accessibility for livestock operations that retain native tree and shrub species, a system called ‘silvopasture’ locally. These areas are characterized by a reduction of sunlight availability if compared with treeless pastures. The objective of this research was to assess the growth rate and the effect of two harvesting intervals (15 and 30 days) on the annual yield (BM) and forage quality of Panicum maximum (Jacq.) var Trichoglume cv Petrie (Green Panic) in such a system, using two approaches: successive harvests and functional, during three growth seasons (2000–01, 2001–02 and 2002–03). Correlation of growth features of Green panic with rainfall (mm), growing degree days (°C, GDD), and soil moisture (%) at two soil depths (0–15 and 15–30 cm) was also assessed. BM varied between 3,500 and 11,500 kg dry matter ha−1. The absolute growth rate presented two annual peaks, located in early and late summer, irrespective of growth season and harvesting interval. Growth season and harvesting interval significantly affected the relative growth rate (p > F = 0.0015 and p > F = 0.0002, respectively). BM was significantly correlated with rainfall and GDD observed between sampling dates, the magnitude of the coefficients were higher for the 30-day than for the 15-day harvesting interval. Correlation between BM and soil moisture content was not significant for both soil depths. Resting periods should be longer than 30 days to maintain the stability of the grazing system. |
| format | Artículo |
| id | INTA2616 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA26162018-06-21T14:17:31Z Yield and growth features of Panicum maximum (Jacq.) var Trichoglume cv Petrie (Green Panic) under woody cover, Chaco region, Argentina Kunst, Carlos Roberto Ledesma, Roxana Ramona Castañares, M.G. Cornacchione, Monica Van Meer, Howard Godoy, Jose Alberto Panicum Maximum Rendimiento Índice de Crecimiento Plantas Leñosas Plantas de Cobertura Yields Growth Rate Woody Plants Cover Plants Pasto guinea Región Chaqueña Secondary forests and shrub thickets with low suitability for cattle raising are widespread in the Chaco region (NW Argentina). Concerns about the ecological sustainability of these ecosystems favor vegetation clearing methods for improving standing forage and accessibility for livestock operations that retain native tree and shrub species, a system called ‘silvopasture’ locally. These areas are characterized by a reduction of sunlight availability if compared with treeless pastures. The objective of this research was to assess the growth rate and the effect of two harvesting intervals (15 and 30 days) on the annual yield (BM) and forage quality of Panicum maximum (Jacq.) var Trichoglume cv Petrie (Green Panic) in such a system, using two approaches: successive harvests and functional, during three growth seasons (2000–01, 2001–02 and 2002–03). Correlation of growth features of Green panic with rainfall (mm), growing degree days (°C, GDD), and soil moisture (%) at two soil depths (0–15 and 15–30 cm) was also assessed. BM varied between 3,500 and 11,500 kg dry matter ha−1. The absolute growth rate presented two annual peaks, located in early and late summer, irrespective of growth season and harvesting interval. Growth season and harvesting interval significantly affected the relative growth rate (p > F = 0.0015 and p > F = 0.0002, respectively). BM was significantly correlated with rainfall and GDD observed between sampling dates, the magnitude of the coefficients were higher for the 30-day than for the 15-day harvesting interval. Correlation between BM and soil moisture content was not significant for both soil depths. Resting periods should be longer than 30 days to maintain the stability of the grazing system. EEA Santiago del Estero Fil: Kunst, Carlos Roberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina Fil: Ledesma, Roxana Ramona. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina Fil: Castañares, M.G. Consultor privado. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina. Fil: Cornacchione, Monica. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina Fil: Van Meer, Howard. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina Fil: Godoy, Jose Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santiago del Estero; Argentina 2018-06-13T15:10:25Z 2018-06-13T15:10:25Z 2014-02 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://link.springer.com/article/10.1007/s10457-013-9663-4 http://hdl.handle.net/20.500.12123/2616 0167-4366 1572-9680 https://doi.org/10.1007/s10457-013-9663-4 eng info:eu-repo/semantics/restrictedAccess application/pdf Agroforestry systems 88 (1) : 157–171. (February 2014) |
| spellingShingle | Panicum Maximum Rendimiento Índice de Crecimiento Plantas Leñosas Plantas de Cobertura Yields Growth Rate Woody Plants Cover Plants Pasto guinea Región Chaqueña Kunst, Carlos Roberto Ledesma, Roxana Ramona Castañares, M.G. Cornacchione, Monica Van Meer, Howard Godoy, Jose Alberto Yield and growth features of Panicum maximum (Jacq.) var Trichoglume cv Petrie (Green Panic) under woody cover, Chaco region, Argentina |
| title | Yield and growth features of Panicum maximum (Jacq.) var Trichoglume cv Petrie (Green Panic) under woody cover, Chaco region, Argentina |
| title_full | Yield and growth features of Panicum maximum (Jacq.) var Trichoglume cv Petrie (Green Panic) under woody cover, Chaco region, Argentina |
| title_fullStr | Yield and growth features of Panicum maximum (Jacq.) var Trichoglume cv Petrie (Green Panic) under woody cover, Chaco region, Argentina |
| title_full_unstemmed | Yield and growth features of Panicum maximum (Jacq.) var Trichoglume cv Petrie (Green Panic) under woody cover, Chaco region, Argentina |
| title_short | Yield and growth features of Panicum maximum (Jacq.) var Trichoglume cv Petrie (Green Panic) under woody cover, Chaco region, Argentina |
| title_sort | yield and growth features of panicum maximum jacq var trichoglume cv petrie green panic under woody cover chaco region argentina |
| topic | Panicum Maximum Rendimiento Índice de Crecimiento Plantas Leñosas Plantas de Cobertura Yields Growth Rate Woody Plants Cover Plants Pasto guinea Región Chaqueña |
| url | https://link.springer.com/article/10.1007/s10457-013-9663-4 http://hdl.handle.net/20.500.12123/2616 https://doi.org/10.1007/s10457-013-9663-4 |
| work_keys_str_mv | AT kunstcarlosroberto yieldandgrowthfeaturesofpanicummaximumjacqvartrichoglumecvpetriegreenpanicunderwoodycoverchacoregionargentina AT ledesmaroxanaramona yieldandgrowthfeaturesofpanicummaximumjacqvartrichoglumecvpetriegreenpanicunderwoodycoverchacoregionargentina AT castanaresmg yieldandgrowthfeaturesofpanicummaximumjacqvartrichoglumecvpetriegreenpanicunderwoodycoverchacoregionargentina AT cornacchionemonica yieldandgrowthfeaturesofpanicummaximumjacqvartrichoglumecvpetriegreenpanicunderwoodycoverchacoregionargentina AT vanmeerhoward yieldandgrowthfeaturesofpanicummaximumjacqvartrichoglumecvpetriegreenpanicunderwoodycoverchacoregionargentina AT godoyjosealberto yieldandgrowthfeaturesofpanicummaximumjacqvartrichoglumecvpetriegreenpanicunderwoodycoverchacoregionargentina |