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Biblioteca (s) : |
INIA Las Brujas. |
Fecha : |
21/02/2014 |
Actualizado : |
22/02/2014 |
Autor : |
Izquierdo, J. ; Ciampi, L. ; García, E. de |
Título : |
Biotecnología apropiable : racionalidad de su desarrollo y aplicación en América Latina y el Caribe |
Fecha de publicación : |
1995 |
Fuente / Imprenta : |
Santiago (Chile): FAO-REDBIO, 1995. |
Páginas : |
81p. |
ISBN : |
ISBN 92-854-3009-0 |
Idioma : |
Español |
Thesagro : |
ACUICULTURA; ADOPCION DE INNOVACIONES; AMERICA LATINA; AUMENTO DE PRODUCCION; BIOTECNOLOGIA; BIOTECNOLOGIA ANIMAL; BIOTECNOLOGIA VEGETAL; CARIBE; CONTROL DE ENFERMEDADES; CONTROL DE PLAGAS; COSTOS; CULTIVO DE ANTERAS; CULTIVO DE TEJIDOS; CULTIVO IN VITRO; ENFERMEDADES DE LAS PLANTAS; ETICA; FACTORES DE PRODUCCION; FITOMEJORAMIENTO; FUSION DEL PROTOPLASTO; IMPACTO AMBIENTAL; INGENIERIA GENETICA; INVESTIGACION; MEJORAMIENTO ANIMAL; ORGANISMOS PARA CONTROL BIOLOGICO; PLANTAS TRANSGENICAS; RESISTENCIA A AGENTES DAÑINOS; SEGURIDAD; TRANSFERENCIA DE TECNOLOGIA. |
Asunto categoría : |
-- |
Marc : |
LEADER 01383nam a2200469 a 4500 001 1000845 005 2014-02-22 008 1995 bl uuuu u00u1 u #d 100 1 $aIZQUIERDO, J. 245 $aBiotecnología apropiable$bracionalidad de su desarrollo y aplicación en América Latina y el Caribe 260 $aSantiago (Chile): FAO-REDBIO$c1995 300 $a81p. 650 $aACUICULTURA 650 $aADOPCION DE INNOVACIONES 650 $aAMERICA LATINA 650 $aAUMENTO DE PRODUCCION 650 $aBIOTECNOLOGIA 650 $aBIOTECNOLOGIA ANIMAL 650 $aBIOTECNOLOGIA VEGETAL 650 $aCARIBE 650 $aCONTROL DE ENFERMEDADES 650 $aCONTROL DE PLAGAS 650 $aCOSTOS 650 $aCULTIVO DE ANTERAS 650 $aCULTIVO DE TEJIDOS 650 $aCULTIVO IN VITRO 650 $aENFERMEDADES DE LAS PLANTAS 650 $aETICA 650 $aFACTORES DE PRODUCCION 650 $aFITOMEJORAMIENTO 650 $aFUSION DEL PROTOPLASTO 650 $aIMPACTO AMBIENTAL 650 $aINGENIERIA GENETICA 650 $aINVESTIGACION 650 $aMEJORAMIENTO ANIMAL 650 $aORGANISMOS PARA CONTROL BIOLOGICO 650 $aPLANTAS TRANSGENICAS 650 $aRESISTENCIA A AGENTES DAÑINOS 650 $aSEGURIDAD 650 $aTRANSFERENCIA DE TECNOLOGIA 700 1 $aCIAMPI, L. 700 1 $aGARCÍA, E. DE
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INIA Las Brujas (LB) |
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Biblioteca (s) : |
INIA Las Brujas. |
Fecha actual : |
12/07/2023 |
Actualizado : |
12/07/2023 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
ORTEGA, G.; CHILIBROSTE, P.; GARRIDO, J.M.; WALLER, A.; FARIÑA, S.; LATTANZI, F. |
Afiliación : |
G. ORTEGA, Facultad de Agronomía Universidad de la República, Departamento de Producción Animal, Ruta 5 km 43, Progreso, Canelones, Uruguay; PABLO CHILIBROSTE, Facultad de Agronomía Universidad de la República, Departamento de Producción Animal, Ruta 3 km 363, Paysandú, Uruguay; J. M. GARRIDO, Facultad de Agronomía Universidad de la República, Departamento de Producción Animal, Ruta 5 km 43, Progreso, Canelones, Uruguay; ALICIA CAROLINA WALLER BARCENA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SANTIAGO FARIÑA, INIA (Instituto Nacional de Investigación Agropecuaria); FERNANDO A. LATTANZI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Monitoring herbage mass and pasture growth rate of large grazing areas: a comparison of the correspondence, cost and reliability of indirect methods. |
Complemento del título : |
Crops and Soils Research Paper. |
Fecha de publicación : |
2023 |
Fuente / Imprenta : |
The Journal of Agricultural Science, 2023, 1-10. https://doi.org/10.1017/S0021859623000333 -- OPEN ACCES. |
ISSN : |
0021-8596 |
DOI : |
10.1017/S0021859623000333 |
Idioma : |
Inglés |
Notas : |
Article history: Received 20 December 2022; Revised 15 May 2023; Accepted 24 May 2023; Published online by Cambridge University Press 14 June 2023. -- Correspondence author: G. Ortega; Email: gortegaconforte@gmail.com -- License: This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/) . -- FUNDING: This project was funded by the Agencia Nacional de Investigación e Innovación (ANII) and Red Tecnológica Sectorial de Lechería (RTS) (project number ANII-RTS_X_2014_1_3) who also funded post-graduate scholarship awarded to G. Ortega (POS_NAC_2018_1_151491). -- |
Contenido : |
Timely grazing decision-making requires routine information on the herbage mass (HM) and pasture growth rate (GR). The aim of this study was to compare the correspondence, cost, and reliability of two indirect methods -the comparative yield method (COMPYLD) and the pasture-meter (CDAX)- to estimate HM and weekly GR of a 42 ha grazing area. Weekly assessments from Apr 2017 to Oct 2018 were made with both methods to estimate HM and GR of 13 individual paddocks. In addition, estimated GR were compared to aerial net primary productivity (ANPP) estimated using remote sensing (SAT). Estimated HM was 22% lower for COMPYLD than CDAX (HMCOMPYLD=33+0.78*HMCDAX, R2=0.61, CV=17%, RMSE=291 kgDM/ha). The correspondence between methods of estimated weekly GR of individual paddocks was weak (GRCDAX=0.18*GRCOMPYLD+19.1, R2=0.05, CV=73%, RMSE=21.8 kgDM/ha/d). However, when integrated in three-week moving-averages, over the complete grazing area, COMPYLD and CDAX yielded similar GR up to 35 kg DM/ha/d. Accumulating GR of the grazing area over one year resulted similar to annual SAT-estimated ANPP. These results imply that, on one hand, decisions based on nominal HM, such as target HM and grazing strip size, would need to be adjusted depending on the method, but on the other hand, decisions based in temporal trends or GR, such as size and timing of setaside areas for reserves, would be unaffected by method. Compared with COMPYLD, CDAX would be advantageous whenever high labour costs offset higher amortization, maintenance and fuel costs, provided there is an alternative in place to monitor during downtime periods. © 2023 Cambridge University Press. All rights reserved. MenosTimely grazing decision-making requires routine information on the herbage mass (HM) and pasture growth rate (GR). The aim of this study was to compare the correspondence, cost, and reliability of two indirect methods -the comparative yield method (COMPYLD) and the pasture-meter (CDAX)- to estimate HM and weekly GR of a 42 ha grazing area. Weekly assessments from Apr 2017 to Oct 2018 were made with both methods to estimate HM and GR of 13 individual paddocks. In addition, estimated GR were compared to aerial net primary productivity (ANPP) estimated using remote sensing (SAT). Estimated HM was 22% lower for COMPYLD than CDAX (HMCOMPYLD=33+0.78*HMCDAX, R2=0.61, CV=17%, RMSE=291 kgDM/ha). The correspondence between methods of estimated weekly GR of individual paddocks was weak (GRCDAX=0.18*GRCOMPYLD+19.1, R2=0.05, CV=73%, RMSE=21.8 kgDM/ha/d). However, when integrated in three-week moving-averages, over the complete grazing area, COMPYLD and CDAX yielded similar GR up to 35 kg DM/ha/d. Accumulating GR of the grazing area over one year resulted similar to annual SAT-estimated ANPP. These results imply that, on one hand, decisions based on nominal HM, such as target HM and grazing strip size, would need to be adjusted depending on the method, but on the other hand, decisions based in temporal trends or GR, such as size and timing of setaside areas for reserves, would be unaffected by method. Compared with COMPYLD, CDAX would be advantageous whenever high labour costs offset high... Presentar Todo |
Palabras claves : |
Aerial net primary productivity; Cattle; CDAX; Comparative yield method; Milk production. |
Asunto categoría : |
L01 Ganadería |
URL : |
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/8FA844C9EEF4B5DAEA10063F15B9B847/S0021859623000333a.pdf
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Marc : |
LEADER 03237naa a2200277 a 4500 001 1064249 005 2023-07-12 008 2023 bl uuuu u00u1 u #d 022 $a0021-8596 024 7 $a10.1017/S0021859623000333$2DOI 100 1 $aORTEGA, G. 245 $aMonitoring herbage mass and pasture growth rate of large grazing areas$ba comparison of the correspondence, cost and reliability of indirect methods.$h[electronic resource] 260 $c2023 500 $aArticle history: Received 20 December 2022; Revised 15 May 2023; Accepted 24 May 2023; Published online by Cambridge University Press 14 June 2023. -- Correspondence author: G. Ortega; Email: gortegaconforte@gmail.com -- License: This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/) . -- FUNDING: This project was funded by the Agencia Nacional de Investigación e Innovación (ANII) and Red Tecnológica Sectorial de Lechería (RTS) (project number ANII-RTS_X_2014_1_3) who also funded post-graduate scholarship awarded to G. Ortega (POS_NAC_2018_1_151491). -- 520 $aTimely grazing decision-making requires routine information on the herbage mass (HM) and pasture growth rate (GR). The aim of this study was to compare the correspondence, cost, and reliability of two indirect methods -the comparative yield method (COMPYLD) and the pasture-meter (CDAX)- to estimate HM and weekly GR of a 42 ha grazing area. Weekly assessments from Apr 2017 to Oct 2018 were made with both methods to estimate HM and GR of 13 individual paddocks. In addition, estimated GR were compared to aerial net primary productivity (ANPP) estimated using remote sensing (SAT). Estimated HM was 22% lower for COMPYLD than CDAX (HMCOMPYLD=33+0.78*HMCDAX, R2=0.61, CV=17%, RMSE=291 kgDM/ha). The correspondence between methods of estimated weekly GR of individual paddocks was weak (GRCDAX=0.18*GRCOMPYLD+19.1, R2=0.05, CV=73%, RMSE=21.8 kgDM/ha/d). However, when integrated in three-week moving-averages, over the complete grazing area, COMPYLD and CDAX yielded similar GR up to 35 kg DM/ha/d. Accumulating GR of the grazing area over one year resulted similar to annual SAT-estimated ANPP. These results imply that, on one hand, decisions based on nominal HM, such as target HM and grazing strip size, would need to be adjusted depending on the method, but on the other hand, decisions based in temporal trends or GR, such as size and timing of setaside areas for reserves, would be unaffected by method. Compared with COMPYLD, CDAX would be advantageous whenever high labour costs offset higher amortization, maintenance and fuel costs, provided there is an alternative in place to monitor during downtime periods. © 2023 Cambridge University Press. All rights reserved. 653 $aAerial net primary productivity 653 $aCattle 653 $aCDAX 653 $aComparative yield method 653 $aMilk production 700 1 $aCHILIBROSTE, P. 700 1 $aGARRIDO, J.M. 700 1 $aWALLER, A. 700 1 $aFARIÑA, S. 700 1 $aLATTANZI, F. 773 $tThe Journal of Agricultural Science, 2023, 1-10. https://doi.org/10.1017/S0021859623000333 -- OPEN ACCES.
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