| |
|
|
 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
|
Registro completo
|
|
Biblioteca (s) : |
INIA La Estanzuela. |
|
Fecha : |
28/11/2018 |
|
Actualizado : |
28/11/2018 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Autor : |
NÚÑEZ, A.; MORON, A. |
|
Afiliación : |
AGUSTIN NUÑEZ RUSSI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DAVID ALEJANDRO MORON YACOEL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
|
Título : |
Potassium dynamics in western uruguayan agricultural mollisols. |
|
Fecha de publicación : |
2017 |
|
Fuente / Imprenta : |
Communications in Soil Science and Plant Analysis, 30 November 2017, Volume 48, Issue 21, Pages 2558-2572. |
|
DOI : |
10.1080/00103624.2017.1416134 |
|
Idioma : |
Inglés |
|
Notas : |
Article history: Received 4 January 2017 // Accepted 13 November 2017. |
|
Contenido : |
ABSTRACT.
Knowledge of soil potassium (K) dynamics and quantification of plant-available K reserves are essential for the correct management of this nutrient. The objectives of this study, conducted in six Uruguayan mollisols, were to (i) determine the contribution of plant-available nonexchangeable K to plant nutrition, (ii) compare the ability of the ammonium acetate (NH4OAc) method and the sodium tetraphenylboron (NaBPh4) method to determine plant-available K, and (iii) quantify the effect of K fixation and release processes on the ability of both methods to estimate changes in K availability due to different K balances. In a greenhouse experiment, perennial ryegrass (Lolium perenne, cv. Horizon) was grown over a period of 320 days in six soils fertilized with 0, 100, 200, and 400 mg K kg?1. We measured plant K uptake and the changes in soil K status related to different K balances using NH4OAc and NaBPh4. Use of NaBPh4 resulted in a more accurate determination of plant-available K (R2 = 0.97 vs. 0.78) and soil K balance (R2 = 0.73 vs. 0.63), but neither of the methods was suitable for identifying positive K balances. However, when positive balances were established by K addition and incubation without plant growth, both methods related well with K balances. Again, NaBPh4 was better than NH4OAc (R2 = 0.98 and 0.88, respectively). The more accurate determination of plant K uptake and the strongest relationship with K balance of NaBPh4 was due to the extraction of exchangeable K plus a proportion of plant-available nonexchangeable K. Soil?plant interactions enhance soil K fixation in forms that are available to plant absorption but are not extractable by the chemical methods considered in this study.
© 2017 Taylor & Francis. MenosABSTRACT.
Knowledge of soil potassium (K) dynamics and quantification of plant-available K reserves are essential for the correct management of this nutrient. The objectives of this study, conducted in six Uruguayan mollisols, were to (i) determine the contribution of plant-available nonexchangeable K to plant nutrition, (ii) compare the ability of the ammonium acetate (NH4OAc) method and the sodium tetraphenylboron (NaBPh4) method to determine plant-available K, and (iii) quantify the effect of K fixation and release processes on the ability of both methods to estimate changes in K availability due to different K balances. In a greenhouse experiment, perennial ryegrass (Lolium perenne, cv. Horizon) was grown over a period of 320 days in six soils fertilized with 0, 100, 200, and 400 mg K kg?1. We measured plant K uptake and the changes in soil K status related to different K balances using NH4OAc and NaBPh4. Use of NaBPh4 resulted in a more accurate determination of plant-available K (R2 = 0.97 vs. 0.78) and soil K balance (R2 = 0.73 vs. 0.63), but neither of the methods was suitable for identifying positive K balances. However, when positive balances were established by K addition and incubation without plant growth, both methods related well with K balances. Again, NaBPh4 was better than NH4OAc (R2 = 0.98 and 0.88, respectively). The more accurate determination of plant K uptake and the strongest relationship with K balance of NaBPh4 was due to the extraction of exchangea... Presentar Todo |
|
Palabras claves : |
ILLITE; NONEXCHANGEABLE POTASSIUM; POTASSIUM RESERVES; SODIUM TETRAPHENYLBORON. |
|
Asunto categoría : |
-- |
|
Marc : |
LEADER 02475naa a2200205 a 4500
001 1059316
005 2018-11-28
008 2017 bl uuuu u00u1 u #d
024 7 $a10.1080/00103624.2017.1416134$2DOI
100 1 $aNÚÑEZ, A.
245 $aPotassium dynamics in western uruguayan agricultural mollisols.$h[electronic resource]
260 $c2017
500 $aArticle history: Received 4 January 2017 // Accepted 13 November 2017.
520 $aABSTRACT. Knowledge of soil potassium (K) dynamics and quantification of plant-available K reserves are essential for the correct management of this nutrient. The objectives of this study, conducted in six Uruguayan mollisols, were to (i) determine the contribution of plant-available nonexchangeable K to plant nutrition, (ii) compare the ability of the ammonium acetate (NH4OAc) method and the sodium tetraphenylboron (NaBPh4) method to determine plant-available K, and (iii) quantify the effect of K fixation and release processes on the ability of both methods to estimate changes in K availability due to different K balances. In a greenhouse experiment, perennial ryegrass (Lolium perenne, cv. Horizon) was grown over a period of 320 days in six soils fertilized with 0, 100, 200, and 400 mg K kg?1. We measured plant K uptake and the changes in soil K status related to different K balances using NH4OAc and NaBPh4. Use of NaBPh4 resulted in a more accurate determination of plant-available K (R2 = 0.97 vs. 0.78) and soil K balance (R2 = 0.73 vs. 0.63), but neither of the methods was suitable for identifying positive K balances. However, when positive balances were established by K addition and incubation without plant growth, both methods related well with K balances. Again, NaBPh4 was better than NH4OAc (R2 = 0.98 and 0.88, respectively). The more accurate determination of plant K uptake and the strongest relationship with K balance of NaBPh4 was due to the extraction of exchangeable K plus a proportion of plant-available nonexchangeable K. Soil?plant interactions enhance soil K fixation in forms that are available to plant absorption but are not extractable by the chemical methods considered in this study. © 2017 Taylor & Francis.
653 $aILLITE
653 $aNONEXCHANGEABLE POTASSIUM
653 $aPOTASSIUM RESERVES
653 $aSODIUM TETRAPHENYLBORON
700 1 $aMORON, A.
773 $tCommunications in Soil Science and Plant Analysis, 30 November 2017, Volume 48, Issue 21, Pages 2558-2572.
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA La Estanzuela (LE) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
|
|
|
Registro completo
|
|
Biblioteca (s) : |
INIA La Estanzuela; INIA Tacuarembó; INIA Treinta y Tres. |
|
Fecha actual : |
05/06/2015 |
|
Actualizado : |
15/05/2018 |
|
Tipo de producción científica : |
Cartillas |
|
Autor : |
INIA (INSTITUTO NACIONAL DE INVESTIGACIÓN AGROPECUARIA).; MGAP (MINISTERIO GANADERÍA AGRICULTURA Y PESCA).; IPA (INSTITUTO PLAN AGROPECUARIO). |
|
Título : |
Alternativas para enfrentar situaciones de crisis forrajeras. |
|
Fecha de publicación : |
2015 |
|
Fuente / Imprenta : |
Montevideo (UY): INIA, 2015. |
|
Páginas : |
14 p. |
|
Idioma : |
Español |
|
Contenido : |
Esta publicación reúne artículos realizados por técnicos del Instituto Nacional de Investigación Agropecuaria (INIA) y el Instituto Plan Agropecuario (IPA) orientados a brindar información y alternativas tecnológicas para enfrentar situaciones de crisis forrajera. Está dirigida a productores y técnicos asesores que desarrollan su actividad en sistemas ganaderos extensivos y semi-extensivos, aportando recomendaciones tecnológicas para predios que enfrentan coyunturas de escasez forrajera provocadas por la sequía. Esta propuesta pretende contribuir a reducir los efectos negativos, inmediatos y de mediano plazo, que la reducida disponibilidad forrajera está produciendo en los establecimientos ganaderos. La expectativa de baja productividad del campo natural durante el invierno, la pérdida de pasturas mejoradas, animales con una condición corporal disminuida, son algunos de los síntomas visibles en los sistemas ganaderos. Esta iniciativa se inscribe en el marco de las acciones que vienen llevando adelante: el Ministerio de Ganadería, Agricultura y Pesca, INIA e IPA. |
|
Palabras claves : |
AFRECHILLO DE ARROZ; AFRECHILLO DE ARROZ DESGRASADO; AFRECHILLO DE TRIGO; CASCARILLA DE SOJA; ESTADO CORPORAL; EXPELER DE SOJA; EXPELLER DE GIRASOL; GRANO DE MAÍZ; GRANO DE SORGO; SUPLEMENTACIÓN CON CONCENTRADOS ENERGÉTICOS. |
|
Thesagro : |
BOVINOS; CALIDAD DEL AGUA; MANEJO DEL RODEO; MONITOREO; SANIDAD ANIMAL; SUPLEMENTACION. |
|
Asunto categoría : |
L51 Fisiología Animal - Nutrición |
|
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/8889/1/ALTERNATIVAS-SEQUIA-2015.pdf
|
|
Marc : |
LEADER 02124nam a2200337 a 4500
001 1058593
005 2018-05-15
008 2015 bl uuuu u0uu1 u #d
100 1 $aINIA (INSTITUTO NACIONAL DE INVESTIGACIÓN AGROPECUARIA).
245 $aAlternativas para enfrentar situaciones de crisis forrajeras.
260 $aMontevideo (UY): INIA$c2015
300 $a14 p.
520 $aEsta publicación reúne artículos realizados por técnicos del Instituto Nacional de Investigación Agropecuaria (INIA) y el Instituto Plan Agropecuario (IPA) orientados a brindar información y alternativas tecnológicas para enfrentar situaciones de crisis forrajera. Está dirigida a productores y técnicos asesores que desarrollan su actividad en sistemas ganaderos extensivos y semi-extensivos, aportando recomendaciones tecnológicas para predios que enfrentan coyunturas de escasez forrajera provocadas por la sequía. Esta propuesta pretende contribuir a reducir los efectos negativos, inmediatos y de mediano plazo, que la reducida disponibilidad forrajera está produciendo en los establecimientos ganaderos. La expectativa de baja productividad del campo natural durante el invierno, la pérdida de pasturas mejoradas, animales con una condición corporal disminuida, son algunos de los síntomas visibles en los sistemas ganaderos. Esta iniciativa se inscribe en el marco de las acciones que vienen llevando adelante: el Ministerio de Ganadería, Agricultura y Pesca, INIA e IPA.
650 $aBOVINOS
650 $aCALIDAD DEL AGUA
650 $aMANEJO DEL RODEO
650 $aMONITOREO
650 $aSANIDAD ANIMAL
650 $aSUPLEMENTACION
653 $aAFRECHILLO DE ARROZ
653 $aAFRECHILLO DE ARROZ DESGRASADO
653 $aAFRECHILLO DE TRIGO
653 $aCASCARILLA DE SOJA
653 $aESTADO CORPORAL
653 $aEXPELER DE SOJA
653 $aEXPELLER DE GIRASOL
653 $aGRANO DE MAÍZ
653 $aGRANO DE SORGO
653 $aSUPLEMENTACIÓN CON CONCENTRADOS ENERGÉTICOS
700 1 $aMGAP (MINISTERIO GANADERÍA AGRICULTURA Y PESCA).
700 1 $aIPA (INSTITUTO PLAN AGROPECUARIO).
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA La Estanzuela (LE) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
| Expresión de búsqueda válido. Check! |
|
|
