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Registro completo
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Biblioteca (s) : |
INIA Las Brujas; INIA Tacuarembó; INIA Treinta y Tres. |
Fecha : |
21/02/2014 |
Actualizado : |
22/02/2014 |
Autor : |
García, S.Paullier, J.Pagani, C. |
Afiliación : |
INIA Las Brujas |
Título : |
Control de enfermedades y plagas en cebolla y ajo |
Fecha de publicación : |
1997 |
Fuente / Imprenta : |
Treinta y Tres (Uruguay): INIA. Programa Nacional de Horticultura, 1997. |
Páginas : |
p. 28-31 |
Serie : |
(INIA Serie Actividades de Difusión ; 126) |
Idioma : |
Español |
Notas : |
INIA Treinta y Tres |
Thesagro : |
AJO; ALLIUM CEPA; ALLIUM SATIVUM; CEBOLLA; CONTROL DE ENFERMEDADES; CONTROL DE PLAGAS. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/260/1/18429180808151559.pdf
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Marc : |
LEADER 00646naa a2200217 a 4500 001 1007551 005 2014-02-22 008 1997 bl uuuu u00u1 u #d 100 1 $aGARCÍA, S.PAULLIER, J.PAGANI, C. 245 $aControl de enfermedades y plagas en cebolla y ajo 260 $c1997 300 $ap. 28-31 490 $a(INIA Serie Actividades de Difusión ; 126) 500 $aINIA Treinta y Tres 650 $aAJO 650 $aALLIUM CEPA 650 $aALLIUM SATIVUM 650 $aCEBOLLA 650 $aCONTROL DE ENFERMEDADES 650 $aCONTROL DE PLAGAS 773 $tTreinta y Tres (Uruguay): INIA. Programa Nacional de Horticultura, 1997.
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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha actual : |
29/04/2015 |
Actualizado : |
16/09/2016 |
Tipo de producción científica : |
Trabajos en Congresos/Conferencias |
Autor : |
DO CARMO, M.; CARDOZO, G.; SOCA, P.M. |
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. |
Título : |
Measurement of campos rangelands herbage mass by simple methods. [Resumen]. |
Fecha de publicación : |
2015 |
Fuente / Imprenta : |
ANNUAL MEETING OF THE SOCIETY FOR RANGE MANAGEMENT, SRM, 68., Sacramento, USA, 2015. |
Idioma : |
Inglés |
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 |
Thesagro : |
FORRAJES; PASTURAS. |
Asunto categoría : |
A50 Investigación agraria |
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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