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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas; INIA Tacuarembó. |
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Fecha : |
21/02/2014 |
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Actualizado : |
17/10/2019 |
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Tipo de producción científica : |
Serie Técnica |
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Autor : |
ASOCIACIÓN DE INGENIEROS AGRÓNOMOS REGIONALES; INIA (INSTITUTO NACIONAL DE INVESTIGACIÓN AGROPECUARIA); SIMPOSIO SUSTENTABILIDAD DE LAS ROTACIONES CULTIVO - PASTURA, 8-9 AGOSTO 1991, PAYSANDÚ, URUGUAY |
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Afiliación : |
INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Resumenes. |
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Fecha de publicación : |
1991 |
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Fuente / Imprenta : |
Montevideo (Uruguay): INIA, 1991. |
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Páginas : |
22 p. |
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Serie : |
(INIA Serie Técnica ; 11) |
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ISSN : |
1688-9266 |
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Idioma : |
Español |
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Contenido : |
Los resúmenes contenidos en este documento corresponden a los trabajos presentados en el Simposio sobre \"Sustentabilidad de las Rotaciones Cultivo-Pasturas en el Cono-Sur\" que organizara INIA-La Estanzuela del 27 al 29 de mayo de 1991 en Montevideo. Los trabajos de los técnicos extranjeros son presentados resumidamente por especialistas nacionales como avance de los artículos que \"in extenso\" serían publicados a fines de 1991 en un número especial de \"Investigaciones Agronómicas\". Este evento tuvo una especial significación para el INIA ya que le permite divulgar un comprensivo estudio del ensayo de largo plazo de rotaciones iniciado en 1963, mediante 9 trabajos efectuados por diversos especialistas. En tiempos en que la producción del país enfrenta nuevos desafíos de la integración regional, no dudamos que los conocimientos básicos que este tipo de experimentación ha generado son el fundamento de la competitividad que exhiben nuestros sistemas de producción y sin duda será su sustentabilidad la clave de su éxito. |
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Thesagro : |
ABONOS NITROGENADOS; CONSERVACION DEL SUELO; DETERIORO DEL SUELO; FERTILIDAD DEL SUELO; NITROGENO; PRADERA TEMPORAL; ROTACION DE CULTIVOS; SISTEMAS DE PRODUCCIÓN; SOSTENIBILIDAD; USO DEL SUELO. |
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Asunto categoría : |
--
F01 Cultivo |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/2852/1/111219220807114352.pdf
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Marc : |
LEADER 01956nam a2200289 a 4500
001 1009821
005 2019-10-17
008 1991 bl uuuu u00u1 u #d
022 $a1688-9266
100 1 $aASOCIACIÓN DE INGENIEROS AGRÓNOMOS REGIONALES
245 $aResumenes.
260 $aMontevideo (Uruguay): INIA$c1991
300 $a22 p.
490 $a(INIA Serie Técnica ; 11)
520 $aLos resúmenes contenidos en este documento corresponden a los trabajos presentados en el Simposio sobre \"Sustentabilidad de las Rotaciones Cultivo-Pasturas en el Cono-Sur\" que organizara INIA-La Estanzuela del 27 al 29 de mayo de 1991 en Montevideo. Los trabajos de los técnicos extranjeros son presentados resumidamente por especialistas nacionales como avance de los artículos que \"in extenso\" serían publicados a fines de 1991 en un número especial de \"Investigaciones Agronómicas\". Este evento tuvo una especial significación para el INIA ya que le permite divulgar un comprensivo estudio del ensayo de largo plazo de rotaciones iniciado en 1963, mediante 9 trabajos efectuados por diversos especialistas. En tiempos en que la producción del país enfrenta nuevos desafíos de la integración regional, no dudamos que los conocimientos básicos que este tipo de experimentación ha generado son el fundamento de la competitividad que exhiben nuestros sistemas de producción y sin duda será su sustentabilidad la clave de su éxito.
650 $aABONOS NITROGENADOS
650 $aCONSERVACION DEL SUELO
650 $aDETERIORO DEL SUELO
650 $aFERTILIDAD DEL SUELO
650 $aNITROGENO
650 $aPRADERA TEMPORAL
650 $aROTACION DE CULTIVOS
650 $aSISTEMAS DE PRODUCCIÓN
650 $aSOSTENIBILIDAD
650 $aUSO DEL SUELO
700 1 $aINIA (INSTITUTO NACIONAL DE INVESTIGACIÓN AGROPECUARIA)
700 1 $aSIMPOSIO SUSTENTABILIDAD DE LAS ROTACIONES CULTIVO - PASTURA, 8-9 AGOSTO 1991, PAYSANDÚ, URUGUAY
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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha actual : |
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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INIA Tacuarembó (TBO) |
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