Dry matter production, morphology and nutritive value of Dactylis glomerata growing under different light regimes
Plant growth, morphology and nutritive value under shade can differ between temperate grasses. Therefore, the aim of this study was to quantify the dry matter (DM) production, sward morphology, crude protein (CP%), organic matter digestibility (OMD) and macro-nutrient concentrations (P, K, Mg, Ca an...
| Autores principales: | , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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Springer Nature
2025
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| Acceso en línea: | http://hdl.handle.net/20.500.12123/23836 https://link.springer.com/article/10.1007/s10457-007-9029-x https://doi.org/10.1007/s10457-007-9029-x |
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| author | Peri, Pablo Luis Lucas, R.J. Moot, Derrick |
| author_browse | Lucas, R.J. Moot, Derrick Peri, Pablo Luis |
| author_facet | Peri, Pablo Luis Lucas, R.J. Moot, Derrick |
| author_sort | Peri, Pablo Luis |
| collection | INTA Digital |
| description | Plant growth, morphology and nutritive value under shade can differ between temperate grasses. Therefore, the aim of this study was to quantify the dry matter (DM) production, sward morphology, crude protein (CP%), organic matter digestibility (OMD) and macro-nutrient concentrations (P, K, Mg, Ca and S) in a grazed cocksfoot (Dactylis glomerata L.) pasture under 10-year-old Pinus radiata D. Don forest. Four levels of light intensity were compared: full sunlight (100% photosynthetic photon flux density-PPFD), open + wooden slats (∼43% PPFD), trees (∼58% PPFD) and tree + slats (∼24% PPFD). The mean total DM production was 8.2 t DM ha−1 yr−1 in the open and 3.8 t DM ha−1 yr−1 in the trees + slats treatment. The changes in cocksfoot leaf area index (LAI) were related to variations in morphological aspects of the sward such as canopy height and tiller population. CP% increased as PPFD declined with mean values of 18.6% in open and 22.5% in the trees + slats treatment. In contrast, the intensity of fluctuating shade had little effect on OMD with a mean value of 79 ± 3.2%. The mean annual macro-nutrient concentrations in leaves increased as the PPFD level declined mainly between the open and the trees + slats treatments. It therefore appears that heavily shaded dominant temperate pastures in silvopastoral systems limit animal production per hectare through lower DM production rates and per animal through reduced pre-grazing pasture mass of lower bulk density from the etiolated pasture. |
| format | Artículo |
| id | INTA23836 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Springer Nature |
| publisherStr | Springer Nature |
| record_format | dspace |
| spelling | INTA238362025-09-17T14:05:43Z Dry matter production, morphology and nutritive value of Dactylis glomerata growing under different light regimes Peri, Pablo Luis Lucas, R.J. Moot, Derrick Pastures Crude Protein Digestibility Dry Matter Pastizales Proteina Bruta Digestibilidad Dactylis glomerata Materia Seca Fluctuating Light Regime Leaf Area Index Light Quality Regimenes Fluctuantes de Luz Índice de Area Foliar Calidad de la Luz Plant growth, morphology and nutritive value under shade can differ between temperate grasses. Therefore, the aim of this study was to quantify the dry matter (DM) production, sward morphology, crude protein (CP%), organic matter digestibility (OMD) and macro-nutrient concentrations (P, K, Mg, Ca and S) in a grazed cocksfoot (Dactylis glomerata L.) pasture under 10-year-old Pinus radiata D. Don forest. Four levels of light intensity were compared: full sunlight (100% photosynthetic photon flux density-PPFD), open + wooden slats (∼43% PPFD), trees (∼58% PPFD) and tree + slats (∼24% PPFD). The mean total DM production was 8.2 t DM ha−1 yr−1 in the open and 3.8 t DM ha−1 yr−1 in the trees + slats treatment. The changes in cocksfoot leaf area index (LAI) were related to variations in morphological aspects of the sward such as canopy height and tiller population. CP% increased as PPFD declined with mean values of 18.6% in open and 22.5% in the trees + slats treatment. In contrast, the intensity of fluctuating shade had little effect on OMD with a mean value of 79 ± 3.2%. The mean annual macro-nutrient concentrations in leaves increased as the PPFD level declined mainly between the open and the trees + slats treatments. It therefore appears that heavily shaded dominant temperate pastures in silvopastoral systems limit animal production per hectare through lower DM production rates and per animal through reduced pre-grazing pasture mass of lower bulk density from the etiolated pasture. EEA Santa Cruz, INTA Fil: Peri, Pablo Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Santa Cruz; Argentina. Fil: Peri, Pablo Luis. Universidad Nacional de la Patagonia Austral (UNPA); Argentina. Fil: Peri, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Lucas, R.J. Lincoln University. Faculty of Agriculture and Life Science; Nueva Zelanda. Fil: Moot, Derrick. Lincoln University. Faculty of Agriculture an Life Science; Nueva Zelanda 2025-09-17T13:55:04Z 2025-09-17T13:55:04Z 2007-02-11 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/23836 https://link.springer.com/article/10.1007/s10457-007-9029-x Peri P.L.; Lucas R.J; Moot D.J. (2007) Dry matter production, morphology and nutritive value of Dactylis glomerata growing under different light regimes. Agroforestry Systems 70: 63-79. 0167-4366 (Print) 1572-9680 (Electronic) https://doi.org/10.1007/s10457-007-9029-x eng info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Springer Nature Agroforestry Systems 70 : 63-79. (2007) |
| spellingShingle | Pastures Crude Protein Digestibility Dry Matter Pastizales Proteina Bruta Digestibilidad Dactylis glomerata Materia Seca Fluctuating Light Regime Leaf Area Index Light Quality Regimenes Fluctuantes de Luz Índice de Area Foliar Calidad de la Luz Peri, Pablo Luis Lucas, R.J. Moot, Derrick Dry matter production, morphology and nutritive value of Dactylis glomerata growing under different light regimes |
| title | Dry matter production, morphology and nutritive value of Dactylis glomerata growing under different light regimes |
| title_full | Dry matter production, morphology and nutritive value of Dactylis glomerata growing under different light regimes |
| title_fullStr | Dry matter production, morphology and nutritive value of Dactylis glomerata growing under different light regimes |
| title_full_unstemmed | Dry matter production, morphology and nutritive value of Dactylis glomerata growing under different light regimes |
| title_short | Dry matter production, morphology and nutritive value of Dactylis glomerata growing under different light regimes |
| title_sort | dry matter production morphology and nutritive value of dactylis glomerata growing under different light regimes |
| topic | Pastures Crude Protein Digestibility Dry Matter Pastizales Proteina Bruta Digestibilidad Dactylis glomerata Materia Seca Fluctuating Light Regime Leaf Area Index Light Quality Regimenes Fluctuantes de Luz Índice de Area Foliar Calidad de la Luz |
| url | http://hdl.handle.net/20.500.12123/23836 https://link.springer.com/article/10.1007/s10457-007-9029-x https://doi.org/10.1007/s10457-007-9029-x |
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