Importance of grazing management in improving water use efficiency of pastures with tropical forage grasses
The growing number of extreme weather events has created the need to identify tropical forage grasses with greater water use efficiency (WUE) to cope with water-limited conditions. WUE can be defined as the ratio of forage biomass produced per unit of water used. However, WUE is a dynamic ratio that...
| Main Authors: | , , , , |
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| Format: | Conference Paper |
| Language: | Inglés |
| Published: |
Bioversity International and the International Center for Tropical Agriculture
2021
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/115813 |
| _version_ | 1855529858532114432 |
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| author | Cardoso Arango, Juan Andrés Jiménez, Juan Sotelo Cabrera, Mauricio Efren Rao, Idupulapati M. Peters, Michael |
| author_browse | Cardoso Arango, Juan Andrés Jiménez, Juan Peters, Michael Rao, Idupulapati M. Sotelo Cabrera, Mauricio Efren |
| author_facet | Cardoso Arango, Juan Andrés Jiménez, Juan Sotelo Cabrera, Mauricio Efren Rao, Idupulapati M. Peters, Michael |
| author_sort | Cardoso Arango, Juan Andrés |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The growing number of extreme weather events has created the need to identify tropical forage grasses with greater water use efficiency (WUE) to cope with water-limited conditions. WUE can be defined as the ratio of forage biomass produced per unit of water used. However, WUE is a dynamic ratio that changes according to environmental gradients (e.g., water or nutrient availability) or ontogenetic drift (e.g., changes in root to shoot biomass allocation across phenological stages). Furthermore, genetic improvement leading to greater WUE is likely to result in smaller plants that produce less than the required forage biomass to sustain good animal performance. Bearing that in mind, other alternatives for improving WUE must be taken into consideration. Grazing management is one among such alternatives. Results from a greenhouse experiment conducted with a number of forage grasses (Cenchrus ciliaris, Chloris gayana, Megathyrsus maximus, Urochloa spp.) at the Alliance of Bioversity-CIAT showed that different grazing intensities lead to various WUEs. Improved WUE values in grasses can be achieved through grazing management if it moderates the process of evapotranspiration by 1) reducing leaf area per plant; and 2) maintaining soil cover from pasture growth and productivity. Our results suggest that WUE in pastures planted with tropical forage grasses can be enhanced through moderate rotational grazing. |
| format | Conference Paper |
| id | CGSpace115813 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Bioversity International and the International Center for Tropical Agriculture |
| publisherStr | Bioversity International and the International Center for Tropical Agriculture |
| record_format | dspace |
| spelling | CGSpace1158132025-12-08T10:29:22Z Importance of grazing management in improving water use efficiency of pastures with tropical forage grasses Cardoso Arango, Juan Andrés Jiménez, Juan Sotelo Cabrera, Mauricio Efren Rao, Idupulapati M. Peters, Michael grazing systems pastures water use sistemas de pastoreo pastizales uso del agua cenchrus ciliaris chloris gayana urochloa The growing number of extreme weather events has created the need to identify tropical forage grasses with greater water use efficiency (WUE) to cope with water-limited conditions. WUE can be defined as the ratio of forage biomass produced per unit of water used. However, WUE is a dynamic ratio that changes according to environmental gradients (e.g., water or nutrient availability) or ontogenetic drift (e.g., changes in root to shoot biomass allocation across phenological stages). Furthermore, genetic improvement leading to greater WUE is likely to result in smaller plants that produce less than the required forage biomass to sustain good animal performance. Bearing that in mind, other alternatives for improving WUE must be taken into consideration. Grazing management is one among such alternatives. Results from a greenhouse experiment conducted with a number of forage grasses (Cenchrus ciliaris, Chloris gayana, Megathyrsus maximus, Urochloa spp.) at the Alliance of Bioversity-CIAT showed that different grazing intensities lead to various WUEs. Improved WUE values in grasses can be achieved through grazing management if it moderates the process of evapotranspiration by 1) reducing leaf area per plant; and 2) maintaining soil cover from pasture growth and productivity. Our results suggest that WUE in pastures planted with tropical forage grasses can be enhanced through moderate rotational grazing. 2021-10-25 2021-11-03T15:38:52Z 2021-11-03T15:38:52Z Conference Paper https://hdl.handle.net/10568/115813 en Open Access application/pdf application/pdf Bioversity International and the International Center for Tropical Agriculture Cardoso, J.A; Jiménez, J.; Sotelo, M.; Rao, I.M.; Peters, M. (2021) Importance of grazing management in improving water use efficiency of pastures with tropical forage grasses. Paper presented at the Joint XXIV International Grassland Congress and XI Rangeland 2021 Congress, Nairobi, Kenya, 25-29 October 2021. Cali (Colombia): Alliance of Bioversity and CIAT. |
| spellingShingle | grazing systems pastures water use sistemas de pastoreo pastizales uso del agua cenchrus ciliaris chloris gayana urochloa Cardoso Arango, Juan Andrés Jiménez, Juan Sotelo Cabrera, Mauricio Efren Rao, Idupulapati M. Peters, Michael Importance of grazing management in improving water use efficiency of pastures with tropical forage grasses |
| title | Importance of grazing management in improving water use efficiency of pastures with tropical forage grasses |
| title_full | Importance of grazing management in improving water use efficiency of pastures with tropical forage grasses |
| title_fullStr | Importance of grazing management in improving water use efficiency of pastures with tropical forage grasses |
| title_full_unstemmed | Importance of grazing management in improving water use efficiency of pastures with tropical forage grasses |
| title_short | Importance of grazing management in improving water use efficiency of pastures with tropical forage grasses |
| title_sort | importance of grazing management in improving water use efficiency of pastures with tropical forage grasses |
| topic | grazing systems pastures water use sistemas de pastoreo pastizales uso del agua cenchrus ciliaris chloris gayana urochloa |
| url | https://hdl.handle.net/10568/115813 |
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