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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
21/02/2014 |
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Actualizado : |
20/07/2021 |
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Tipo de producción científica : |
Trabajos en Congresos/Conferencias |
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Autor : |
INIA LA ESTANZUELA; CIBILS, R.; RISSO, D.; AHUNCHAIN, M.; ZARZA, A |
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Afiliación : |
ESTACIÓN EXPERIMENTAL "DR. ALBERTO BOERGER", INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RICARDO CIBILS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.; DIEGO FERNANDO RISSO RIET, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIO AHUNCHAIN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.; ANGEL ZARZA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Jornada sobre suplementacion: alternativas de Producción de carne en sistemas agrícolas : forrajeros intensivos. |
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Fecha de publicación : |
1993 |
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Fuente / Imprenta : |
La Estanzuela, Colonia (Uruguay): INIA;UEDY; SRRN, 1993. |
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Páginas : |
19 p. |
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Idioma : |
Español |
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Thesagro : |
CRIANZA INTENSIVA; MANEJO DE PRADERAS; MANEJO DEL GANADO; PRODUCCION DE CARNE; SISTEMAS DE EXPLOTACION. |
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Asunto categoría : |
-- |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/15872/1/UY.UEDY-INIA.1993.Jornada-Suplementacion.pdf
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Marc : |
LEADER 00669nam a2200217 a 4500
001 1043530
005 2021-07-20
008 1993 bl uuuu u01u1 u #d
100 1 $aINIA LA ESTANZUELA
245 $aJornada sobre suplementacion$balternativas de Producción de carne en sistemas agrícolas : forrajeros intensivos.
260 $aLa Estanzuela, Colonia (Uruguay): INIA;UEDY; SRRN$c1993
300 $a19 p.
650 $aCRIANZA INTENSIVA
650 $aMANEJO DE PRADERAS
650 $aMANEJO DEL GANADO
650 $aPRODUCCION DE CARNE
650 $aSISTEMAS DE EXPLOTACION
700 1 $aCIBILS, R.
700 1 $aRISSO, D.
700 1 $aAHUNCHAIN, M.
700 1 $aZARZA, A
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Registro original : |
INIA La Estanzuela (LE) |
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 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
28/11/2018 |
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Actualizado : |
28/11/2018 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
NÚÑEZ, A.; MORON, A. |
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Afiliación : |
AGUSTIN NUÑEZ RUSSI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DAVID ALEJANDRO MORON YACOEL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Potassium dynamics in western uruguayan agricultural mollisols. |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Communications in Soil Science and Plant Analysis, 30 November 2017, Volume 48, Issue 21, Pages 2558-2572. |
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DOI : |
10.1080/00103624.2017.1416134 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 4 January 2017 // Accepted 13 November 2017. |
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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 |
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Palabras claves : |
ILLITE; NONEXCHANGEABLE POTASSIUM; POTASSIUM RESERVES; SODIUM TETRAPHENYLBORON. |
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Asunto categoría : |
-- |
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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.
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