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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
21/02/2014 |
Actualizado : |
22/02/2014 |
Autor : |
Afors, M. |
Afiliación : |
Swedish University of Agricultural Sciences |
Título : |
Weeds and weed management in small-scale cropping systems in northern Zambia |
Fecha de publicación : |
1994 |
Fuente / Imprenta : |
Uppsala (Suecia): Swedish University of Agricultural Sciences, 1994. |
Páginas : |
190p. |
Serie : |
Crop Production Science |
Idioma : |
Español |
Notas : |
Tesis (Dr) Swedish University of Agricultural Sciences, 1990 |
Thesagro : |
ESCARDA; EXPLOTACION AGRICOLA EXTENSIVA; EXPLOTACION EN PEQUEÑA ESCALA; MALEZAS; SUDAFRICA. |
Asunto categoría : |
-- |
Marc : |
LEADER 00632nam a2200193 a 4500 001 1038673 005 2014-02-22 008 1994 bl uuuu u00u1 u #d 100 1 $aAFORS, M. 245 $aWeeds and weed management in small-scale cropping systems in northern Zambia 260 $aUppsala (Suecia): Swedish University of Agricultural Sciences$c1994 300 $a190p. 490 $aCrop Production Science 500 $aTesis (Dr) Swedish University of Agricultural Sciences, 1990 650 $aESCARDA 650 $aEXPLOTACION AGRICOLA EXTENSIVA 650 $aEXPLOTACION EN PEQUEÑA ESCALA 650 $aMALEZAS 650 $aSUDAFRICA
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| Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
21/02/2014 |
Actualizado : |
28/06/2021 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
A - 1 |
Autor : |
BALKCOM, K.S.; TERRA, J.A.; SHAW, J.N.; REEVES, D.W.; RAPER, R.L. |
Afiliación : |
JOSÉ ALFREDO TERRA FERNÁNDEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Soil management system and landscape position interactions on nutrient distribution in a coastal plain field. |
Fecha de publicación : |
2005 |
Fuente / Imprenta : |
Journal of Soils and Water Conservation, 2005, v.60 (6), p. 431-437. |
Descripción física : |
2-s2.0-34548703816 |
ISSN : |
0022-4561 |
Idioma : |
Inglés |
Contenido : |
Soil nutrient concentrations vary with soil management system and landscape position, but limited information exists describing these interactions within a heterogeneous field. A three year experiment was conducted to evaluate pH, phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and zinc (Zn) concentrations at three depths, 0 to 5 cm, 5 to 15 cm, and 15 to 30 cm (0 to 2 in, 2 to 6 in, and 6 to 12 in), and three landscape positions, summit, sideslope, and drainageway, in a 9 ha (22 ac) field containing four different management systems. Management systems consisted of a conventional (chisel plowing/disking in-row subsoiling with no cover crops) and conservation tillage system (in-row subsoiling with cover crops) with or without dairy bedding manure. Soils ranged from Aquic to Typic Paleudults. Manure applications increased pH and nutrient concentrations in the soil surface at 0 to 5 cm (0 to 2 in) of conventional and conservation tillage systems, with highest values measured in conservation tillage. Landscape position affected soil pH and P concentrations; however, depth and landscape position interactions were observed for soil pH, P, and K concentrations. The lowest soil pH and P concentrations were measured from the sideslope position, while K concentrations did not exhibit consistent distributions across landscape positions. Future soil testing of Coastal Plain fields to account for erosion of the landscape may help direct future sampling methodology and interpretations for nutrient management. MenosSoil nutrient concentrations vary with soil management system and landscape position, but limited information exists describing these interactions within a heterogeneous field. A three year experiment was conducted to evaluate pH, phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and zinc (Zn) concentrations at three depths, 0 to 5 cm, 5 to 15 cm, and 15 to 30 cm (0 to 2 in, 2 to 6 in, and 6 to 12 in), and three landscape positions, summit, sideslope, and drainageway, in a 9 ha (22 ac) field containing four different management systems. Management systems consisted of a conventional (chisel plowing/disking in-row subsoiling with no cover crops) and conservation tillage system (in-row subsoiling with cover crops) with or without dairy bedding manure. Soils ranged from Aquic to Typic Paleudults. Manure applications increased pH and nutrient concentrations in the soil surface at 0 to 5 cm (0 to 2 in) of conventional and conservation tillage systems, with highest values measured in conservation tillage. Landscape position affected soil pH and P concentrations; however, depth and landscape position interactions were observed for soil pH, P, and K concentrations. The lowest soil pH and P concentrations were measured from the sideslope position, while K concentrations did not exhibit consistent distributions across landscape positions. Future soil testing of Coastal Plain fields to account for erosion of the landscape may help direct future sampling methodology and inter... Presentar Todo |
Thesagro : |
AGRICULTURA DE PRECISIÒN; CONSERVACION DE SUELOS; FERTILIDAD; MANEJO DE SUELOS; NUTRIENTES; SUELOS; VARIABILIDAD ESPACIAL. |
Asunto categoría : |
P30 Ciencia del suelo y manejo del suelo |
Marc : |
LEADER 02360naa a2200277 a 4500 001 1032799 005 2021-06-28 008 2005 bl uuuu u00u1 u #d 022 $a0022-4561 100 1 $aBALKCOM, K.S. 245 $aSoil management system and landscape position interactions on nutrient distribution in a coastal plain field.$h[electronic resource] 260 $c2005 300 $c2-s2.0-34548703816 520 $aSoil nutrient concentrations vary with soil management system and landscape position, but limited information exists describing these interactions within a heterogeneous field. A three year experiment was conducted to evaluate pH, phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and zinc (Zn) concentrations at three depths, 0 to 5 cm, 5 to 15 cm, and 15 to 30 cm (0 to 2 in, 2 to 6 in, and 6 to 12 in), and three landscape positions, summit, sideslope, and drainageway, in a 9 ha (22 ac) field containing four different management systems. Management systems consisted of a conventional (chisel plowing/disking in-row subsoiling with no cover crops) and conservation tillage system (in-row subsoiling with cover crops) with or without dairy bedding manure. Soils ranged from Aquic to Typic Paleudults. Manure applications increased pH and nutrient concentrations in the soil surface at 0 to 5 cm (0 to 2 in) of conventional and conservation tillage systems, with highest values measured in conservation tillage. Landscape position affected soil pH and P concentrations; however, depth and landscape position interactions were observed for soil pH, P, and K concentrations. The lowest soil pH and P concentrations were measured from the sideslope position, while K concentrations did not exhibit consistent distributions across landscape positions. Future soil testing of Coastal Plain fields to account for erosion of the landscape may help direct future sampling methodology and interpretations for nutrient management. 650 $aAGRICULTURA DE PRECISIÒN 650 $aCONSERVACION DE SUELOS 650 $aFERTILIDAD 650 $aMANEJO DE SUELOS 650 $aNUTRIENTES 650 $aSUELOS 650 $aVARIABILIDAD ESPACIAL 700 1 $aTERRA, J.A. 700 1 $aSHAW, J.N. 700 1 $aREEVES, D.W. 700 1 $aRAPER, R.L. 773 $tJournal of Soils and Water Conservation, 2005$gv.60 (6), p. 431-437.
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