Characterization of Brachiaria decumbens ‘Basilisk’ pasture subjected to flexible grazing by sheep
ABSTRACT The sustainability of animal production on pasture is based on improving the management of forage species used, which ensures increase in animal productivity, pasture perenniality and cost reduction. The objective was to characterize productive, structural, physiological and normalized diff...
Guardado en:
| Autores principales: | , , , , , , , |
|---|---|
| Lenguaje: | English |
| Publicado: |
Instituto de Investigaciones Agropecuarias, INIA
2021
|
| Materias: | |
| Acceso en línea: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392021000300338 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| id |
oai:scielo:S0718-58392021000300338 |
|---|---|
| record_format |
dspace |
| spelling |
oai:scielo:S0718-583920210003003382021-08-16Characterization of Brachiaria decumbens ‘Basilisk’ pasture subjected to flexible grazing by sheepConrado,Jefte A. de A.Lopes,Marcos N.Cândido,Magno J.D.Santos-Neto,Clemente F. dosMorais,Leonardo F. deTorres,Antônia F.F.Nascimento,Dayanne R. doCarneiro,Maria S. de S. Forage production forage structure leaf area index NDVI photosynthesis rotational stocking ABSTRACT The sustainability of animal production on pasture is based on improving the management of forage species used, which ensures increase in animal productivity, pasture perenniality and cost reduction. The objective was to characterize productive, structural, physiological and normalized difference vegetation index (NDVI) responses of Brachiaria decumbens Stapf ‘Basilisk’ over the flexibilization of the grazing management adopted. Four defoliation combinations were evaluated, which consisted of the arrangement of two (85% and 95%) light interceptions (LI) and two (1.3 and 1.8) residual leaf area indexes (RLAI), as parameters of entry and exit of the animals from the pasture, respectively. Higher total forage biomass was observed (TFB, kg DM ha-1) 18.82%, when the canopy was managed at the lowest defoliation frequencies (95% LI), but with a higher morphological composition of the stem component and dead material. The 95% LI produced an extra layer of leaves than the canopy managed at 85% LI. The physiological variables were affected by the higher frequency of defoliation (85% LI), with lower photosynthetic rates. NDVI was higher in the canopy managed in the pre-grazing condition at 95% LI (0.88) and residual condition at 1.8 RLAI (0.49), when compared to 85% LI (0.86) and 1.3 RLAI (0.44). For greater production per animal, managing at 85% LI × 1.8 RLAI with pre-grazing and residual NDVI of 0.85 and 0.49, respectively, is the most suitable while for greater animal production per area, managing at 95% LI × 1.3 RLAI with pre-grazing and residual NDVI of 0.88 and 0.44, respectively, becomes more efficient.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.81 n.3 20212021-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392021000300338en10.4067/S0718-58392021000300338 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Forage production forage structure leaf area index NDVI photosynthesis rotational stocking |
| spellingShingle |
Forage production forage structure leaf area index NDVI photosynthesis rotational stocking Conrado,Jefte A. de A. Lopes,Marcos N. Cândido,Magno J.D. Santos-Neto,Clemente F. dos Morais,Leonardo F. de Torres,Antônia F.F. Nascimento,Dayanne R. do Carneiro,Maria S. de S. Characterization of Brachiaria decumbens ‘Basilisk’ pasture subjected to flexible grazing by sheep |
| description |
ABSTRACT The sustainability of animal production on pasture is based on improving the management of forage species used, which ensures increase in animal productivity, pasture perenniality and cost reduction. The objective was to characterize productive, structural, physiological and normalized difference vegetation index (NDVI) responses of Brachiaria decumbens Stapf ‘Basilisk’ over the flexibilization of the grazing management adopted. Four defoliation combinations were evaluated, which consisted of the arrangement of two (85% and 95%) light interceptions (LI) and two (1.3 and 1.8) residual leaf area indexes (RLAI), as parameters of entry and exit of the animals from the pasture, respectively. Higher total forage biomass was observed (TFB, kg DM ha-1) 18.82%, when the canopy was managed at the lowest defoliation frequencies (95% LI), but with a higher morphological composition of the stem component and dead material. The 95% LI produced an extra layer of leaves than the canopy managed at 85% LI. The physiological variables were affected by the higher frequency of defoliation (85% LI), with lower photosynthetic rates. NDVI was higher in the canopy managed in the pre-grazing condition at 95% LI (0.88) and residual condition at 1.8 RLAI (0.49), when compared to 85% LI (0.86) and 1.3 RLAI (0.44). For greater production per animal, managing at 85% LI × 1.8 RLAI with pre-grazing and residual NDVI of 0.85 and 0.49, respectively, is the most suitable while for greater animal production per area, managing at 95% LI × 1.3 RLAI with pre-grazing and residual NDVI of 0.88 and 0.44, respectively, becomes more efficient. |
| author |
Conrado,Jefte A. de A. Lopes,Marcos N. Cândido,Magno J.D. Santos-Neto,Clemente F. dos Morais,Leonardo F. de Torres,Antônia F.F. Nascimento,Dayanne R. do Carneiro,Maria S. de S. |
| author_facet |
Conrado,Jefte A. de A. Lopes,Marcos N. Cândido,Magno J.D. Santos-Neto,Clemente F. dos Morais,Leonardo F. de Torres,Antônia F.F. Nascimento,Dayanne R. do Carneiro,Maria S. de S. |
| author_sort |
Conrado,Jefte A. de A. |
| title |
Characterization of Brachiaria decumbens ‘Basilisk’ pasture subjected to flexible grazing by sheep |
| title_short |
Characterization of Brachiaria decumbens ‘Basilisk’ pasture subjected to flexible grazing by sheep |
| title_full |
Characterization of Brachiaria decumbens ‘Basilisk’ pasture subjected to flexible grazing by sheep |
| title_fullStr |
Characterization of Brachiaria decumbens ‘Basilisk’ pasture subjected to flexible grazing by sheep |
| title_full_unstemmed |
Characterization of Brachiaria decumbens ‘Basilisk’ pasture subjected to flexible grazing by sheep |
| title_sort |
characterization of brachiaria decumbens ‘basilisk’ pasture subjected to flexible grazing by sheep |
| publisher |
Instituto de Investigaciones Agropecuarias, INIA |
| publishDate |
2021 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392021000300338 |
| work_keys_str_mv |
AT conradojefteadea characterizationofbrachiariadecumbens8216basilisk8217pasturesubjectedtoflexiblegrazingbysheep AT lopesmarcosn characterizationofbrachiariadecumbens8216basilisk8217pasturesubjectedtoflexiblegrazingbysheep AT candidomagnojd characterizationofbrachiariadecumbens8216basilisk8217pasturesubjectedtoflexiblegrazingbysheep AT santosnetoclementefdos characterizationofbrachiariadecumbens8216basilisk8217pasturesubjectedtoflexiblegrazingbysheep AT moraisleonardofde characterizationofbrachiariadecumbens8216basilisk8217pasturesubjectedtoflexiblegrazingbysheep AT torresantoniaff characterizationofbrachiariadecumbens8216basilisk8217pasturesubjectedtoflexiblegrazingbysheep AT nascimentodayannerdo characterizationofbrachiariadecumbens8216basilisk8217pasturesubjectedtoflexiblegrazingbysheep AT carneiromariasdes characterizationofbrachiariadecumbens8216basilisk8217pasturesubjectedtoflexiblegrazingbysheep |
| _version_ |
1714205412188749824 |