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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha : |
29/04/2015 |
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Actualizado : |
16/09/2016 |
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Tipo de producción científica : |
Trabajos en Congresos/Conferencias |
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Autor : |
DO CARMO, M.; CARDOZO, G.; SOCA, P.M. |
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Afiliación : |
MARTIN DO CARMO CORUJO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GERONIMO AGUSTIN CARDOZO CABANELAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PABLO M. SOCA. |
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Título : |
Measurement of campos rangelands herbage mass by simple methods. [Resumen]. |
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Fecha de publicación : |
2015 |
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Fuente / Imprenta : |
ANNUAL MEETING OF THE SOCIETY FOR RANGE MANAGEMENT, SRM, 68., Sacramento, USA, 2015. |
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Idioma : |
Inglés |
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Contenido : |
Accurate and precise estimation of herbage mass is essential for livestock management, because herbage allowance depends on it estimation. Difficulties in estimation arise because of great variability in herbage mass in grassland and rangeland situations. Measuring yield directly by cutting is costly and destructive; but herbage height is highly correlated with herbage mass, thus could be a substitute of the cutting. Based on measurement of herbage mass in a large experiment (EEBR) and in four farms across Uruguay (MICN), we analyzed the relationship between herbage height and dry weight of the quadrat in kg/ha. Analysis was performed
with PROC MIXED and PROC CORR of SAS. On the other hand, the sample size to be taken in each paddock is of great importance and was estimated from the data population described above by resampling and estimating the coefficient of variation (CV) between means. A CV of 10% was defined as the limit to consider the estimation precise enough. The general relationship was y = 224 (±36) + x * 339 (±4), R2 = 0.84. Sample size to maintain the average with a CV error below 10% varied with mean, because it change the variance, however as a general rule, with a sample size between 60 to 100 only one estimation from 198, was above 10% error of the mean. We conclude that estimations based on herbage height are accurate enough (R2 = 0.84) to estimate the herbage mass and a sample size from
60 to 100, give as confidence to estimate herbage mass with precision in paddocks from 5 to 190 ha. That methodology should be extended to Campos rangeland manager for decision making to control grazing intensity. MenosAccurate and precise estimation of herbage mass is essential for livestock management, because herbage allowance depends on it estimation. Difficulties in estimation arise because of great variability in herbage mass in grassland and rangeland situations. Measuring yield directly by cutting is costly and destructive; but herbage height is highly correlated with herbage mass, thus could be a substitute of the cutting. Based on measurement of herbage mass in a large experiment (EEBR) and in four farms across Uruguay (MICN), we analyzed the relationship between herbage height and dry weight of the quadrat in kg/ha. Analysis was performed
with PROC MIXED and PROC CORR of SAS. On the other hand, the sample size to be taken in each paddock is of great importance and was estimated from the data population described above by resampling and estimating the coefficient of variation (CV) between means. A CV of 10% was defined as the limit to consider the estimation precise enough. The general relationship was y = 224 (±36) + x * 339 (±4), R2 = 0.84. Sample size to maintain the average with a CV error below 10% varied with mean, because it change the variance, however as a general rule, with a sample size between 60 to 100 only one estimation from 198, was above 10% error of the mean. We conclude that estimations based on herbage height are accurate enough (R2 = 0.84) to estimate the herbage mass and a sample size from
60 to 100, give as confidence to estimate herbage mass with precisi... Presentar Todo |
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Thesagro : |
FORRAJES; PASTURAS. |
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Asunto categoría : |
A50 Investigación agraria |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/4400/1/DO-CARMO-2015-AINFO.pdf
http://www.rangelands.org/events/
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Marc : |
LEADER 02135nam a2200157 a 4500
001 1052580
005 2016-09-16
008 2015 bl uuuu u01u1 u #d
100 1 $aDO CARMO, M.
245 $aMeasurement of campos rangelands herbage mass by simple methods. [Resumen].$h[electronic resource]
260 $aANNUAL MEETING OF THE SOCIETY FOR RANGE MANAGEMENT, SRM, 68., Sacramento, USA$c2015
520 $aAccurate and precise estimation of herbage mass is essential for livestock management, because herbage allowance depends on it estimation. Difficulties in estimation arise because of great variability in herbage mass in grassland and rangeland situations. Measuring yield directly by cutting is costly and destructive; but herbage height is highly correlated with herbage mass, thus could be a substitute of the cutting. Based on measurement of herbage mass in a large experiment (EEBR) and in four farms across Uruguay (MICN), we analyzed the relationship between herbage height and dry weight of the quadrat in kg/ha. Analysis was performed with PROC MIXED and PROC CORR of SAS. On the other hand, the sample size to be taken in each paddock is of great importance and was estimated from the data population described above by resampling and estimating the coefficient of variation (CV) between means. A CV of 10% was defined as the limit to consider the estimation precise enough. The general relationship was y = 224 (±36) + x * 339 (±4), R2 = 0.84. Sample size to maintain the average with a CV error below 10% varied with mean, because it change the variance, however as a general rule, with a sample size between 60 to 100 only one estimation from 198, was above 10% error of the mean. We conclude that estimations based on herbage height are accurate enough (R2 = 0.84) to estimate the herbage mass and a sample size from 60 to 100, give as confidence to estimate herbage mass with precision in paddocks from 5 to 190 ha. That methodology should be extended to Campos rangeland manager for decision making to control grazing intensity.
650 $aFORRAJES
650 $aPASTURAS
700 1 $aCARDOZO, G.
700 1 $aSOCA, P.M.
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Registro original : |
INIA Tacuarembó (TBO) |
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Biblioteca (s) : |
INIA La Estanzuela; INIA Tacuarembó. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
11/05/2018 |
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Tipo de producción científica : |
Libros |
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Autor : |
BALMELLI, G.; RESQUIN, F. |
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Afiliación : |
GUSTAVO DANIEL BALMELLI HERNANDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSE FERNANDO RESQUIN PEREZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Evaluación del crecimiento de especies de Eucalyptus en diferentes zonas de prioridad forestal. |
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Fecha de publicación : |
2002 |
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Fuente / Imprenta : |
Tacuarembó, UY: INIA, 2002. |
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Páginas : |
20 p. |
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Serie : |
(Serie Aftercare Forestal INIA - JICA, 14). |
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ISBN : |
9974-38-142-8. |
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Idioma : |
Español |
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Notas : |
Aftercare del Proyecto de Mejoramiento Genético Forestal en el Uruguay (2000-2002). |
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Contenido : |
El Programa Nacional Forestal del INIA, con el apoyo de JICA, ha venido instalando ensayos con varias especies de Eucalyptus en diferentes zonas de prioridad forestal. Los principales objetivos de dichos ensayos son: evaluar el comportamiento productivo de varias especies en diferentes sitios; determinar las fuentes de semilla más recomendables para nuestras condiciones y evaluar la importancia de la interacción genotipo-ambiente (especie-sitio y origen-sitio). |
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Palabras claves : |
COOPERACIÓN TÉCNICA INTERNACIONAL; EVALUACIÓN DE COMPORTAMIENTO PRODUCTIVO; EVALUACIÓN DE ESPECIES; EVALUACIÓN DE FUENTES DE SEMILLA; INTERACCIÓN ESPECIE-SITIO; INTERACCIÓN GENOTIPO AMBIENTE; INTERACCIÓN ORIGEN-SITIO; JAPÓN. |
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Thesagro : |
EUCALYPTUS; FORESTACIÓN; INTERACCION GENOTIPO AMBIENTE; URUGUAY. |
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Asunto categoría : |
K10 Producción forestal |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/4330/1/Aftercare-del-Proyecto-de-Mejoramiento-Genetico-Forestal-en-el-Uruguay-2000-2002-Nro.-14.pdf
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Marc : |
LEADER 01483nam a2200301 a 4500
001 1040549
005 2018-05-11
008 2002 bl uuuu u00u1 u #d
100 1 $aBALMELLI, G.
245 $aEvaluación del crecimiento de especies de Eucalyptus en diferentes zonas de prioridad forestal.
260 $aTacuarembó, UY: INIA$c2002
300 $a20 p.
490 $a(Serie Aftercare Forestal INIA - JICA, 14).
500 $aAftercare del Proyecto de Mejoramiento Genético Forestal en el Uruguay (2000-2002).
520 $aEl Programa Nacional Forestal del INIA, con el apoyo de JICA, ha venido instalando ensayos con varias especies de Eucalyptus en diferentes zonas de prioridad forestal. Los principales objetivos de dichos ensayos son: evaluar el comportamiento productivo de varias especies en diferentes sitios; determinar las fuentes de semilla más recomendables para nuestras condiciones y evaluar la importancia de la interacción genotipo-ambiente (especie-sitio y origen-sitio).
650 $aEUCALYPTUS
650 $aFORESTACIÓN
650 $aINTERACCION GENOTIPO AMBIENTE
650 $aURUGUAY
653 $aCOOPERACIÓN TÉCNICA INTERNACIONAL
653 $aEVALUACIÓN DE COMPORTAMIENTO PRODUCTIVO
653 $aEVALUACIÓN DE ESPECIES
653 $aEVALUACIÓN DE FUENTES DE SEMILLA
653 $aINTERACCIÓN ESPECIE-SITIO
653 $aINTERACCIÓN GENOTIPO AMBIENTE
653 $aINTERACCIÓN ORIGEN-SITIO
653 $aJAPÓN
700 1 $aRESQUIN, F.
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