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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
06/10/2014 |
Actualizado : |
31/07/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Nacionales |
Autor : |
SAWCHIK, J.; PÉREZ BIDEGAIN, M.; GARCÍA, C. |
Afiliación : |
JORGE SAWCHIK PINTOS, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
Título : |
Impact of winter cover crops on soil properties under soybean cropping systems. |
Fecha de publicación : |
2012 |
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. |
Páginas : |
8 p. |
Idioma : |
Inglés |
Notas : |
También publicado en: Agrociencia Uruguay, v. 16, n. especial, p. 288-293, 2012. |
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 |
Palabras claves : |
COVER CROPS; CROPPING SYSTEMS; SOIL ORGANIC CARBON. |
Thesagro : |
AGRICULTURA CONTINUA; AVENA SATIVA; CARBONO ORGÁNICO DEL SUELO; CULTIVOS DE COBERTURA INVERNAL; GLYCINE MAX; LOLIUM MULTIFLORUM; SISTEMAS DE CULTIVO. |
Asunto categoría : |
P30 Ciencia del suelo y manejo del suelo |
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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INIA La Estanzuela (LE) |
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| Acceso al texto completo restringido a Biblioteca INIA Tacuarembó. Por información adicional contacte bibliotb@tb.inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha actual : |
19/09/2014 |
Actualizado : |
30/09/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
DALLA RIZZA, M.; REAL, D.; REYNO, R.; QUESENBERRY, K |
Afiliación : |
MARCO DALLA RIZZA VILARO, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; DANIEL REAL FERREIRO, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; RAFAEL ALEJANDRO REYNO PODESTA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
Título : |
Breeding system of the aerial flowers in an amphicarpic clover species: Trifolium polymorphum |
Fecha de publicación : |
2007 |
Fuente / Imprenta : |
Crop Science, 2007, v.: 47, no. 4, p. 1401 - 1406. |
DOI : |
10.2135/cropsci2006.11.0744 |
Idioma : |
Inglés |
Notas : |
Article history: Received: Nov 24, 2006 // Published: July, 2007. |
Contenido : |
Two perennial Trifolium, T. polymorphum Poir. and T. argentinense Speg., are American clovers unique within the genus for being amphicarpic. There is no consensus in the literature regarding the breeding system of the aerial flowers of T. polymorphum, therefore, the breeding system was studied. In 1997 T. polymorphum was collected in Uruguay and evaluated at INIA Tacuarembó. In 2001, 10 field patches were marked and in 2004, 20 plants per patch were characterized with simple sequence repeat markers. Patch J10 showed a particular molecular profile, therefore, 198 open-pollinated progenies freely visited by honeybees were studied. In 2005, at the University of Florida, Gainesville, different hand-pollination treatments were conducted within an accession from Paraguay. Trifolium polymorphum was able to cross-pollinate with all the known pollen donors molecularly marked that surrounded plants from patch J10 (30%), also with some nonmarked native ones from the vicinity (10%) as well as with itself (60%), when allowed to be visited by honeybees. However, when there are no pollinators, the selfing rate is minimal. The proposed classification for the breeding system is an allogamous, self-compatible species that benefits from pollinators to set seed. |
Thesagro : |
TRIFOLIUM POLYMORPHUM. |
Asunto categoría : |
A50 Investigación agraria |
Marc : |
LEADER 01883naa a2200193 a 4500 001 1050399 005 2019-09-30 008 2007 bl uuuu u00u1 u #d 024 7 $a10.2135/cropsci2006.11.0744$2DOI 100 1 $aDALLA RIZZA, M. 245 $aBreeding system of the aerial flowers in an amphicarpic clover species$bTrifolium polymorphum 260 $c2007 500 $aArticle history: Received: Nov 24, 2006 // Published: July, 2007. 520 $aTwo perennial Trifolium, T. polymorphum Poir. and T. argentinense Speg., are American clovers unique within the genus for being amphicarpic. There is no consensus in the literature regarding the breeding system of the aerial flowers of T. polymorphum, therefore, the breeding system was studied. In 1997 T. polymorphum was collected in Uruguay and evaluated at INIA Tacuarembó. In 2001, 10 field patches were marked and in 2004, 20 plants per patch were characterized with simple sequence repeat markers. Patch J10 showed a particular molecular profile, therefore, 198 open-pollinated progenies freely visited by honeybees were studied. In 2005, at the University of Florida, Gainesville, different hand-pollination treatments were conducted within an accession from Paraguay. Trifolium polymorphum was able to cross-pollinate with all the known pollen donors molecularly marked that surrounded plants from patch J10 (30%), also with some nonmarked native ones from the vicinity (10%) as well as with itself (60%), when allowed to be visited by honeybees. However, when there are no pollinators, the selfing rate is minimal. The proposed classification for the breeding system is an allogamous, self-compatible species that benefits from pollinators to set seed. 650 $aTRIFOLIUM POLYMORPHUM 700 1 $aREAL, D. 700 1 $aREYNO, R. 700 1 $aQUESENBERRY, K 773 $tCrop Science, 2007$gv.: 47, no. 4, p. 1401 - 1406.
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