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| 270. |  | VERA, M.; VÁZQUEZ, D.; STEWART, S.; CASTRO, B.; CASTRO, M. Resultados experimentales de colza en Uruguay. In:Simposio Latinoamericano de Canola,1.,Centro Cultural Notre Dame Menino Jesus, Passo Fundo, RS, Brasil, 2014.| Biblioteca(s): INIA La Estanzuela. |
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| 278. | | INIA (INSTITUTO NACIONAL DE INVESTIGACIÓN AGROPECUARIA); LABANDERA, C. Resultados experimentales de evaluación de cultivares. Especies forrajeras Parte II: Bianuales y perennes 1999. Programa Nacional de Evaluación de Cultivares. Unidad de Biometría, Protección Vegetal, Malezas. La Estanzuela: INIA, 1999. 63 p. Programa Nacional de Evaluación de Cultivares: Sergio Ceretta, Marcel Labandera, Diego Vilaró, Marina Castro, Juan Caffarel, Mauricio Sastre. Unidad de Biometría: Vilfredo Ibáñez. Protección Vegetal: Nora Altier, Rosario Alzugaray....| Biblioteca(s): INIA Tacuarembó. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha actual : |
06/10/2014 |
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Actualizado : |
31/07/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Nacionales |
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Circulación / Nivel : |
B - 2 |
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Autor : |
SAWCHIK, J.; PÉREZ BIDEGAIN, M.; GARCÍA, C. |
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Afiliación : |
JORGE SAWCHIK PINTOS, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Impact of winter cover crops on soil properties under soybean cropping systems. |
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Fecha de publicación : |
2012 |
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Fuente / Imprenta : |
In: INTERNATIONAL SOIL TILLAGE RESEARCH ORGANIZATION. 19., SOCIEDAD URUGUAYA DE CIENCIA DEL SUELO, 4., 2012, Montevideo, UY. [Oral presentation]: paper no. 376. Montevideo, UY: ISTRO, 2012. |
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Páginas : |
8 p. |
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Idioma : |
Inglés |
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Notas : |
También publicado en: Agrociencia Uruguay, v. 16, n. especial, p. 288-293, 2012. |
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Contenido : |
ABSTRACT.
Agricultural systems in Uruguay exhibit a high frequency of soybean in crop rotations. This could adversely affect soil organic carbon (SOC) storage in the long term. The introduction of winter annual cover crops (CC) in these systems may improve SOC balance as well as reduce the impact of rainfall on soil erosion rates. The objective of this study was to evaluate the impact of the inclusion of CC on SOC storage and soil physical properties under continuous soybean (Glycine max [L.] Merr) cropping systems. A ? eld experiment was established in 2003 in a vertic Argiudoll. A split plot design was used with CC and non CC as whole plot arranged in four randomized complete blocks. Cover crops were: oats (Avena sativa L)., annual ryegrass (Lolium multi? orum L.). Two termination dates comprised split plots: 60 or 30 days before soybean planting. Mean annual forage production over eight years was higher (P ? 0.05) in oats compared to annual ryegrass for both termination dates. The inclusion of CC increased SOC concentration at the 0-7.5 cm depth, and at the 7.5-15 cm depth in the annual ryegrass treatment. Oats and annual ryegrass had 60 and 80 % more particulate organic carbon (POC) concentrations at the 0-7.5 cm, respectively than no cover crop treatment. No signi? cant differences among treatments were observed for mineral associated organic C-MAOM at any depth. Nitrogen mineralization potential under ryegrass had a three-fold increase compared to the no cover crop treatment. Both CC treatments showed a higher (P ? 0.05) percentage of macropores compared to the no cover crop treatment. In most of the years soybean grain yield was not affected by cover crops treatments. However, late termination dates often reduced soybean yields. The inclusion of CC in high frequency soybean cropping systems may enhance soil C storage, and improve related soil physical properties. MenosABSTRACT.
Agricultural systems in Uruguay exhibit a high frequency of soybean in crop rotations. This could adversely affect soil organic carbon (SOC) storage in the long term. The introduction of winter annual cover crops (CC) in these systems may improve SOC balance as well as reduce the impact of rainfall on soil erosion rates. The objective of this study was to evaluate the impact of the inclusion of CC on SOC storage and soil physical properties under continuous soybean (Glycine max [L.] Merr) cropping systems. A ? eld experiment was established in 2003 in a vertic Argiudoll. A split plot design was used with CC and non CC as whole plot arranged in four randomized complete blocks. Cover crops were: oats (Avena sativa L)., annual ryegrass (Lolium multi? orum L.). Two termination dates comprised split plots: 60 or 30 days before soybean planting. Mean annual forage production over eight years was higher (P ? 0.05) in oats compared to annual ryegrass for both termination dates. The inclusion of CC increased SOC concentration at the 0-7.5 cm depth, and at the 7.5-15 cm depth in the annual ryegrass treatment. Oats and annual ryegrass had 60 and 80 % more particulate organic carbon (POC) concentrations at the 0-7.5 cm, respectively than no cover crop treatment. No signi? cant differences among treatments were observed for mineral associated organic C-MAOM at any depth. Nitrogen mineralization potential under ryegrass had a three-fold increase compared to the no cover crop tre... Presentar Todo |
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Palabras claves : |
COVER CROPS; CROPPING SYSTEMS; SOIL ORGANIC CARBON. |
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Thesagro : |
AGRICULTURA CONTINUA; AVENA SATIVA; CARBONO ORGÁNICO DEL SUELO; CULTIVOS DE COBERTURA INVERNAL; GLYCINE MAX; LOLIUM MULTIFLORUM; SISTEMAS DE CULTIVO. |
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Asunto categoría : |
P30 Ciencia del suelo y manejo del suelo |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/12188/1/Agrociencia-ISTRO-2012-3-Sawchik-J..pdf
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Marc : |
LEADER 02951naa a2200289 a 4500
001 1050927
005 2019-07-31
008 2012 bl uuuu u00u1 u #d
100 1 $aSAWCHIK, J.
245 $aImpact of winter cover crops on soil properties under soybean cropping systems.$h[electronic resource]
260 $c2012
300 $a8 p.
500 $aTambién publicado en: Agrociencia Uruguay, v. 16, n. especial, p. 288-293, 2012.
520 $aABSTRACT. Agricultural systems in Uruguay exhibit a high frequency of soybean in crop rotations. This could adversely affect soil organic carbon (SOC) storage in the long term. The introduction of winter annual cover crops (CC) in these systems may improve SOC balance as well as reduce the impact of rainfall on soil erosion rates. The objective of this study was to evaluate the impact of the inclusion of CC on SOC storage and soil physical properties under continuous soybean (Glycine max [L.] Merr) cropping systems. A ? eld experiment was established in 2003 in a vertic Argiudoll. A split plot design was used with CC and non CC as whole plot arranged in four randomized complete blocks. Cover crops were: oats (Avena sativa L)., annual ryegrass (Lolium multi? orum L.). Two termination dates comprised split plots: 60 or 30 days before soybean planting. Mean annual forage production over eight years was higher (P ? 0.05) in oats compared to annual ryegrass for both termination dates. The inclusion of CC increased SOC concentration at the 0-7.5 cm depth, and at the 7.5-15 cm depth in the annual ryegrass treatment. Oats and annual ryegrass had 60 and 80 % more particulate organic carbon (POC) concentrations at the 0-7.5 cm, respectively than no cover crop treatment. No signi? cant differences among treatments were observed for mineral associated organic C-MAOM at any depth. Nitrogen mineralization potential under ryegrass had a three-fold increase compared to the no cover crop treatment. Both CC treatments showed a higher (P ? 0.05) percentage of macropores compared to the no cover crop treatment. In most of the years soybean grain yield was not affected by cover crops treatments. However, late termination dates often reduced soybean yields. The inclusion of CC in high frequency soybean cropping systems may enhance soil C storage, and improve related soil physical properties.
650 $aAGRICULTURA CONTINUA
650 $aAVENA SATIVA
650 $aCARBONO ORGÁNICO DEL SUELO
650 $aCULTIVOS DE COBERTURA INVERNAL
650 $aGLYCINE MAX
650 $aLOLIUM MULTIFLORUM
650 $aSISTEMAS DE CULTIVO
653 $aCOVER CROPS
653 $aCROPPING SYSTEMS
653 $aSOIL ORGANIC CARBON
700 1 $aPÉREZ BIDEGAIN, M.
700 1 $aGARCÍA, C.
773 $tIn: INTERNATIONAL SOIL TILLAGE RESEARCH ORGANIZATION. 19., SOCIEDAD URUGUAYA DE CIENCIA DEL SUELO, 4., 2012, Montevideo, UY. [Oral presentation]: paper no. 376. Montevideo, UY: ISTRO, 2012.
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