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| 42. |  | Castro, A.; Ernst, O.; Hoffman, E.; Bentancur, O. Caracterización mediante variables agronómicas del germoplasma de cebada en Uruguay ln: Congreso de Cebada Maltera, 2., 1996, Carillanca, Temuco, Chile Trabajos presentados. Temuco (Chile): FAO; INIA Carillanca, 1999. p. 115-124| Biblioteca(s): INIA La Estanzuela. |
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| 44. | | RUBIO, V.; SAWCHIK, J.; ERNST, O.; QUINCKE, A.; SIRI, G. Calibración/validacion del modelo AMG para simular la evolucion del stock de carbono orgánico en suelos de Uruguay. In: Congreso Uruguayo de Suelos, 1.; Encuentro de la Sociedad Uruguaya de Ciencias del Suelo, 6., 2014, Colonia del Sacramento, UY. Intensificando el conocimiento del suelo y medioambiente para producir más y mejor; presentaciones orales: propiedades físicas químicas biológicas. [Montevideo: SUCS], 2014. p. 31.| Biblioteca(s): INIA La Estanzuela. |
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| 47. | | CASTRO, A.J.; ERNST, O.; HOFFMAN, E.; BENTANCUR, O. Characterization through growth cicle [sic] and growth pattern, yield and yield components, and grain quality of the barley germplasm in Uruguay. In: INTERNATIONAL OAT CONFERENCE, 5.; INTERNATIONAL BARLEY GENETICS SYMPOSIUM, 7., SASKATOON, SK, CA.; SLINKARD, A.; SCOLES, G.; ROSSNAGEL, B. (Ed.). Proceedings: poster sessions; volume 1. Saskatoon, SK, CA: University Extension Press, 1996. p. 155-157.| Biblioteca(s): INIA La Estanzuela. |
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| 54. | | DE LEÓN, G.; PÉREZ, M.; ERNST, O.; TERRA, J.A. Estado estructural del suelo en sistemas agrícolas y agrícolas pastoriles. In: UNIVERSIDAD DE LA REPÚBLICA (UDELAR). FACULTAD DE AGRONOMÍA. Resúmenes. Jornadas de Investigación, 8-9 nov., 2018, Montevideo, Uruguay. Montevideo; FAGRO, 2019. p. 77. Trabajo originalmente publicado en: D. León, G.; Pérez Bidegain, M.; Terra, J.; Ernst, O. 2018. World Congress of Soil Science, 21º. Soil structural state in continuous cropping systems. Río de Janeiro, Brasil. (Trabajo Completo).
Trabajo...| Biblioteca(s): INIA Treinta y Tres. |
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| 56. | | FASSANA , C.N.; HOFFMAN , E.M.; BERGER, A.; ERNST, O. Nitrogen nutrition index at GS 3.3 is an effective tool to adjust nitrogen required to reach attainable wheat yield. [El índice de nutrición nitrogenada en GS 3.3 es una herramienta eficaz para ajustar el nitrógeno necesario para lograr el rendimiento de trigo alcanzable]. [O índice de nutrição de nitrogênio no GS 3.3 é uma ferramenta eficaz para ajustar o nitrogênio necessário para alcançar a produtividade de trigo atingível]. Plant production. Agrociencia Uruguay, 2022, Vol.26, number 2, e924. https://doi.org/10.31285/AGRO.26.924 -- OPEN ACCESS. Article history: Received 8 Jul 2021; Accepted 21 Jun 2022; Published 30 Aug 2022. -- Correspondence: Nicolás Fassana, fassana@fagro.edu.uy -- Editor: José A. Terra,
Instituto Nacional de Investigación Agropecuaria (INIA), Treinta y Tres,...| Biblioteca(s): INIA Las Brujas. |
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| 57. | | ERNST, O.; BENTANCUR, O.; SIRI, G.; FRANCO, J.; LAZBAL, E. Nivel de adopción y situación de la siembra directa en establecimientos de producción lechera In: SCARLATO, G.; BUXEDAS, M.; FRANCO, J.; PERNAS, A. Adopción y demandas de investigación y difusión en siembra directa: encuestas a la agricultura y lechería del suroeste de Uruguay. Montevideo (Uruguay): INIA, 2001. p. 107-133 (Serie FPTA-INIA ; 06) Proyecto FPTA 131. Período de ejecución: Jun.2000-Nov.2000| Biblioteca(s): INIA La Estanzuela; INIA Las Brujas; INIA Tacuarembó. |
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 | Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
11/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
A - 1 |
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Autor : |
GARCÍA-PRÉCHAC, F.; ERNST, O.; SIRI-PRIETO, G.; TERRA, J.A. |
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Afiliación : |
JOSÉ ALFREDO TERRA FERNÁNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Integrating no-till into crop-pasture rotations in Uruguay: review. |
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Fecha de publicación : |
2004 |
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Fuente / Imprenta : |
Soil & Tillage Research, 2004, v. 77, p. 1-13. |
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DOI : |
10.1016/j.still.2003.12.002 |
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Idioma : |
Inglés |
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Notas : |
Article history:Received 21 February 2003 ; received in revised form 27 November 2003 ; accepted 9 December 2003.
https://doi.org/10.1016/j.still.2003.12.002 |
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Contenido : |
Abstract
Crop pasture rotations (CPR) are unusual around the world but have been the predominant cropping system in Uruguay since the 1960s. Uruguay has a temperate sub-humid climate, 80% of its landscape (16 Mha) is climax grasslands C3 and C4 species. Beef, wool, and dairy are the main commodities. Crops occupy a portion of the remaining 20% land area, primarily on Argiudolls and Vertisols, rotated with seeded grass and legume pastures. Continuous cropping (CC) with conventional tillage (CT) has proven unsustainable due to decreased soil productivity. Seeded pasture periods increased soil productivity. CPR adoption created less variable inter-annual economic results, but soil degradation remained a major concern during the crop cycle using CT. Farmers and technicians became interested in no-till (NT) to reduce erosion and production cost. Currently,
approximately 52% of crop producing farms and 25% of dairy farms have adopted NT. This paper synthesizes research results (mainly from long-term experiments) contrasting CC versus CPR with CT (1960?1990) and NT (from 1990). Soil erosion was reduced more than six times with NT in CC, and almost three times in CPR compared with CC using CT; but combining the use of CPR and NT resulted in the same low erosion rate as under natural pasture. The transition from CT to NT is not always easy. The time between herbicide application to pasture and planting of the first crop of the rotation crop cycle with NT is a critical transition factor to optimize N and water availability, and soil tilth. Chiseling or paraplowing can alleviate plow-pans inherited by NT from previous CT; but higher soil strength at the soil surface under NT contributes to better forage utilization
under grazing. Soil organic carbon (SOC) content in CC decreased with CT, and was maintained with NT only if grain was harvested. In CC systems with harvested forage, SOC decreased even with NT. CPR with NT maintained or increased the original SOC content. The paper concludes with a discussion on the relative sustainability of CC versus CPR with NT. Both are sustainable from the soil quality and productivity standpoints. But compared with CC, CPR is a more economically and climatically buffered system, due to higher diversity. Also, CPR systems are more environmentally sustainable since fuel and agrochemicals usage is reduced approximately 50%. MenosAbstract
Crop pasture rotations (CPR) are unusual around the world but have been the predominant cropping system in Uruguay since the 1960s. Uruguay has a temperate sub-humid climate, 80% of its landscape (16 Mha) is climax grasslands C3 and C4 species. Beef, wool, and dairy are the main commodities. Crops occupy a portion of the remaining 20% land area, primarily on Argiudolls and Vertisols, rotated with seeded grass and legume pastures. Continuous cropping (CC) with conventional tillage (CT) has proven unsustainable due to decreased soil productivity. Seeded pasture periods increased soil productivity. CPR adoption created less variable inter-annual economic results, but soil degradation remained a major concern during the crop cycle using CT. Farmers and technicians became interested in no-till (NT) to reduce erosion and production cost. Currently,
approximately 52% of crop producing farms and 25% of dairy farms have adopted NT. This paper synthesizes research results (mainly from long-term experiments) contrasting CC versus CPR with CT (1960?1990) and NT (from 1990). Soil erosion was reduced more than six times with NT in CC, and almost three times in CPR compared with CC using CT; but combining the use of CPR and NT resulted in the same low erosion rate as under natural pasture. The transition from CT to NT is not always easy. The time between herbicide application to pasture and planting of the first crop of the rotation crop cycle with NT is a critical transition fact... Presentar Todo |
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Thesagro : |
COMPACTACIÓN DEL SUELO; EROSIÓN DEL SUELO; PASTURAS; ROTACION DE CULTIVOS; URUGUAY. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 03223naa a2200241 a 4500
001 1032788
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008 2004 bl uuuu u00u1 u #d
024 7 $a10.1016/j.still.2003.12.002$2DOI
100 1 $aGARCÍA-PRÉCHAC, F.
245 $aIntegrating no-till into crop-pasture rotations in Uruguay$breview.$h[electronic resource]
260 $c2004
500 $aArticle history:Received 21 February 2003 ; received in revised form 27 November 2003 ; accepted 9 December 2003. https://doi.org/10.1016/j.still.2003.12.002
520 $aAbstract Crop pasture rotations (CPR) are unusual around the world but have been the predominant cropping system in Uruguay since the 1960s. Uruguay has a temperate sub-humid climate, 80% of its landscape (16 Mha) is climax grasslands C3 and C4 species. Beef, wool, and dairy are the main commodities. Crops occupy a portion of the remaining 20% land area, primarily on Argiudolls and Vertisols, rotated with seeded grass and legume pastures. Continuous cropping (CC) with conventional tillage (CT) has proven unsustainable due to decreased soil productivity. Seeded pasture periods increased soil productivity. CPR adoption created less variable inter-annual economic results, but soil degradation remained a major concern during the crop cycle using CT. Farmers and technicians became interested in no-till (NT) to reduce erosion and production cost. Currently, approximately 52% of crop producing farms and 25% of dairy farms have adopted NT. This paper synthesizes research results (mainly from long-term experiments) contrasting CC versus CPR with CT (1960?1990) and NT (from 1990). Soil erosion was reduced more than six times with NT in CC, and almost three times in CPR compared with CC using CT; but combining the use of CPR and NT resulted in the same low erosion rate as under natural pasture. The transition from CT to NT is not always easy. The time between herbicide application to pasture and planting of the first crop of the rotation crop cycle with NT is a critical transition factor to optimize N and water availability, and soil tilth. Chiseling or paraplowing can alleviate plow-pans inherited by NT from previous CT; but higher soil strength at the soil surface under NT contributes to better forage utilization under grazing. Soil organic carbon (SOC) content in CC decreased with CT, and was maintained with NT only if grain was harvested. In CC systems with harvested forage, SOC decreased even with NT. CPR with NT maintained or increased the original SOC content. The paper concludes with a discussion on the relative sustainability of CC versus CPR with NT. Both are sustainable from the soil quality and productivity standpoints. But compared with CC, CPR is a more economically and climatically buffered system, due to higher diversity. Also, CPR systems are more environmentally sustainable since fuel and agrochemicals usage is reduced approximately 50%.
650 $aCOMPACTACIÓN DEL SUELO
650 $aEROSIÓN DEL SUELO
650 $aPASTURAS
650 $aROTACION DE CULTIVOS
650 $aURUGUAY
700 1 $aERNST, O.
700 1 $aSIRI-PRIETO, G.
700 1 $aTERRA, J.A.
773 $tSoil & Tillage Research, 2004$gv. 77, p. 1-13.
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