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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
29/01/2020 |
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Actualizado : |
29/01/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
SAWCHIK, J.; MALLARINO, A.P. |
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Afiliación : |
JORGE SAWCHIK PINTOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ANTONIO P. MALLARINO, Dep. of Agronomy, Iowa State Univ., Ames, IA, United States. |
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Título : |
Evaluation of zone soil sampling approaches for phosphorus and potassium based on corn and soybean response to fertilization. |
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Fecha de publicación : |
2007 |
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Fuente / Imprenta : |
Agronomy Journal, November 2007, Volume 99, Issue 6, Pages 1564-1578. Doi: 10.2134/agronj2006.0151 |
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ISSN : |
0002-1962 |
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DOI : |
10.2134/agronj2006.0151 |
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Idioma : |
Inglés |
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Notas : |
Article history: Published November, 2007. |
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Contenido : |
ABSTRACT.
Soil sampling approaches have been compared based on soil-test variation. This study evaluated sampling approaches for P and K based on yield response to fertilization. Strip trials were established on four fields for P and three fields for K managed with corn (Zea mays L.) and soybean (Glycine max L. Merr.) rotations and evaluated 3 or 4 yr (27 site-years). Treatments replicated three to four times were fertilizer and no fertilizer application. Soil test results from a dense grid-point sampling (DG) approach (0.08 to 0.27 ha) were used to simulate six approaches: (i) 1.0-ha grid cells (GC), and zones delineated based on (ii) soil series from digitized survey maps (SMZ); (iii) elevation (EZ); (iv) apparent soil electrical conductivity, ECa (ECZ); (v) EZ and ECZ (EECZ); and (vi) EZ, ECZ, and slope (EECSZ). Grain yield monitors, global positioning systems (GPS), and geographical information systems (GIS) were used to describe crop responses. Estimates of soil-test variation were largest for DG, intermediate for GC, and less for other approaches. Crops responded (P ≤ 0.05) to fertilization in 20 site-years. Sampling approaches DG, GC, EZ, EECZ or EECSZ, ECZ, and SMZ identified a differential within-field yield response in 16, 8, 5, 3, 2, and 2 site-years, respectively. Differential yield responses seldom were explained by zone-mean soil-test values. Zone approaches often identified areas with different yield levels but were less effective than DG or GC at describing within-field variation of soil tests and yield response to fertilization. Zone approaches may be more effective in fields with shorter fertilization histories or soils with more contrast in properties.
© American Society of Agronomy. MenosABSTRACT.
Soil sampling approaches have been compared based on soil-test variation. This study evaluated sampling approaches for P and K based on yield response to fertilization. Strip trials were established on four fields for P and three fields for K managed with corn (Zea mays L.) and soybean (Glycine max L. Merr.) rotations and evaluated 3 or 4 yr (27 site-years). Treatments replicated three to four times were fertilizer and no fertilizer application. Soil test results from a dense grid-point sampling (DG) approach (0.08 to 0.27 ha) were used to simulate six approaches: (i) 1.0-ha grid cells (GC), and zones delineated based on (ii) soil series from digitized survey maps (SMZ); (iii) elevation (EZ); (iv) apparent soil electrical conductivity, ECa (ECZ); (v) EZ and ECZ (EECZ); and (vi) EZ, ECZ, and slope (EECSZ). Grain yield monitors, global positioning systems (GPS), and geographical information systems (GIS) were used to describe crop responses. Estimates of soil-test variation were largest for DG, intermediate for GC, and less for other approaches. Crops responded (P ≤ 0.05) to fertilization in 20 site-years. Sampling approaches DG, GC, EZ, EECZ or EECSZ, ECZ, and SMZ identified a differential within-field yield response in 16, 8, 5, 3, 2, and 2 site-years, respectively. Differential yield responses seldom were explained by zone-mean soil-test values. Zone approaches often identified areas with different yield levels but were less effective than DG or GC at descri... Presentar Todo |
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Palabras claves : |
Fertilizers. |
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Thesagro : |
GLYCINE MAX; ZEA MAYS. |
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Asunto categoría : |
F01 Cultivo |
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Marc : |
LEADER 02450naa a2200205 a 4500
001 1060715
005 2020-01-29
008 2007 bl uuuu u00u1 u #d
022 $a0002-1962
024 7 $a10.2134/agronj2006.0151$2DOI
100 1 $aSAWCHIK, J.
245 $aEvaluation of zone soil sampling approaches for phosphorus and potassium based on corn and soybean response to fertilization.$h[electronic resource]
260 $c2007
500 $aArticle history: Published November, 2007.
520 $aABSTRACT. Soil sampling approaches have been compared based on soil-test variation. This study evaluated sampling approaches for P and K based on yield response to fertilization. Strip trials were established on four fields for P and three fields for K managed with corn (Zea mays L.) and soybean (Glycine max L. Merr.) rotations and evaluated 3 or 4 yr (27 site-years). Treatments replicated three to four times were fertilizer and no fertilizer application. Soil test results from a dense grid-point sampling (DG) approach (0.08 to 0.27 ha) were used to simulate six approaches: (i) 1.0-ha grid cells (GC), and zones delineated based on (ii) soil series from digitized survey maps (SMZ); (iii) elevation (EZ); (iv) apparent soil electrical conductivity, ECa (ECZ); (v) EZ and ECZ (EECZ); and (vi) EZ, ECZ, and slope (EECSZ). Grain yield monitors, global positioning systems (GPS), and geographical information systems (GIS) were used to describe crop responses. Estimates of soil-test variation were largest for DG, intermediate for GC, and less for other approaches. Crops responded (P ≤ 0.05) to fertilization in 20 site-years. Sampling approaches DG, GC, EZ, EECZ or EECSZ, ECZ, and SMZ identified a differential within-field yield response in 16, 8, 5, 3, 2, and 2 site-years, respectively. Differential yield responses seldom were explained by zone-mean soil-test values. Zone approaches often identified areas with different yield levels but were less effective than DG or GC at describing within-field variation of soil tests and yield response to fertilization. Zone approaches may be more effective in fields with shorter fertilization histories or soils with more contrast in properties. © American Society of Agronomy.
650 $aGLYCINE MAX
650 $aZEA MAYS
653 $aFertilizers
700 1 $aMALLARINO, A.P.
773 $tAgronomy Journal, November 2007, Volume 99, Issue 6, Pages 1564-1578. Doi: 10.2134/agronj2006.0151
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INIA Las Brujas (LB) |
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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 : |
21/02/2014 |
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Actualizado : |
28/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
A - 2 |
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Autor : |
QUINCKE, A.; WORTMANN, C.S.; MAMO, M.; FRANTI, T.G.; DRIJBER, R.A. |
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Afiliación : |
JUAN ANDRES QUINCKE WALDEN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; C. S. WORTMANN, University of Nebraska at Lincoln.; MARTHA MAMO, University of Nebraska at Lincoln.; THOMAS G FRANTI, University of Nebraska at Lincoln.; RHAE A. DRIJBER, University of Nebraska at Lincoln. |
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Título : |
Occasional tillage of no-till systems: Carbon dioxide flux and changes in total and labile soil organic carbon. |
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Fecha de publicación : |
2007 |
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Fuente / Imprenta : |
Agronomy Journal, July 2007, Volume 99, Issue 4, Pages 1158-1168. |
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DOI : |
10.2134/agronj2006.0317 |
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Idioma : |
Inglés |
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Contenido : |
ABSTRACT: Soil organic carbon (SOC) accumulation occurs mostly in the top 5 cm of soil with continuous no-till (NT) while SOC losses often occur atdeeperdepths.Wehypothesizethatone-timetillageconductedonce in .10 yr to mix the high SOC surface layer with deeper soil will not result in large SOC losses following tillage with a net positive gain in SOCeventually.Twoexperimentsinlong-termNTfieldswereinstalled under rainfed corn (Zea mays L.) or sorghum [Sorghum bicolor (L.) Moench.] rotated with soybean [Glycine max (L.) Merr.] in eastern Nebraska. Tillage treatments were applied in the spring or fall and included: NT, disk, chisel with 10-cm wide twisted shanks, moldboard plow (MP), and mini-moldboard plow (miniMP). A portable infrared gas analyzer was used to monitor CO2 flux immediately following tillage. Effect of tillage on profile distribution of total and labile (particulate and oxidizable) SOC was determined. At 24 to 32 mo following tillage, SOC mass was determined for depths of 0 to 5, 5 to 20, and 20 to 30 cm. Some tillage operations effectively redistributed total and labile SOC with little increase in CO2 flux compared with NT. TotalandlabileSOCconcentrationswerereducedby24to88%inthe 0- to 2.5-cm depth and increased by 13 to 381% for the 5- to 10-cm depth for the various tillage operations. Moldboard plowing caused the greatest redistribution of SOC. On an equivalent soil mass basis, tillage did not cause significant losses of total or labile SOC between tillage and planting of the next crop or by 24 to 32 mo after tillage. Stratification of SOC in long-term NT soil could be reduced most effectively by means of one-time MP tillage without increased loss of labile SOC. MenosABSTRACT: Soil organic carbon (SOC) accumulation occurs mostly in the top 5 cm of soil with continuous no-till (NT) while SOC losses often occur atdeeperdepths.Wehypothesizethatone-timetillageconductedonce in .10 yr to mix the high SOC surface layer with deeper soil will not result in large SOC losses following tillage with a net positive gain in SOCeventually.Twoexperimentsinlong-termNTfieldswereinstalled under rainfed corn (Zea mays L.) or sorghum [Sorghum bicolor (L.) Moench.] rotated with soybean [Glycine max (L.) Merr.] in eastern Nebraska. Tillage treatments were applied in the spring or fall and included: NT, disk, chisel with 10-cm wide twisted shanks, moldboard plow (MP), and mini-moldboard plow (miniMP). A portable infrared gas analyzer was used to monitor CO2 flux immediately following tillage. Effect of tillage on profile distribution of total and labile (particulate and oxidizable) SOC was determined. At 24 to 32 mo following tillage, SOC mass was determined for depths of 0 to 5, 5 to 20, and 20 to 30 cm. Some tillage operations effectively redistributed total and labile SOC with little increase in CO2 flux compared with NT. TotalandlabileSOCconcentrationswerereducedby24to88%inthe 0- to 2.5-cm depth and increased by 13 to 381% for the 5- to 10-cm depth for the various tillage operations. Moldboard plowing caused the greatest redistribution of SOC. On an equivalent soil mass basis, tillage did not cause significant losses of total or labile SOC between tillage an... Presentar Todo |
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Palabras claves : |
CARBON DIOXIDE; SOIL MICROORGANISMS; SOYBEANS; ZEA MAYS. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02404naa a2200229 a 4500
001 1049477
005 2019-10-28
008 2007 bl uuuu u00u1 u #d
024 7 $a10.2134/agronj2006.0317$2DOI
100 1 $aQUINCKE, A.
245 $aOccasional tillage of no-till systems$bCarbon dioxide flux and changes in total and labile soil organic carbon.$h[electronic resource]
260 $c2007
520 $aABSTRACT: Soil organic carbon (SOC) accumulation occurs mostly in the top 5 cm of soil with continuous no-till (NT) while SOC losses often occur atdeeperdepths.Wehypothesizethatone-timetillageconductedonce in .10 yr to mix the high SOC surface layer with deeper soil will not result in large SOC losses following tillage with a net positive gain in SOCeventually.Twoexperimentsinlong-termNTfieldswereinstalled under rainfed corn (Zea mays L.) or sorghum [Sorghum bicolor (L.) Moench.] rotated with soybean [Glycine max (L.) Merr.] in eastern Nebraska. Tillage treatments were applied in the spring or fall and included: NT, disk, chisel with 10-cm wide twisted shanks, moldboard plow (MP), and mini-moldboard plow (miniMP). A portable infrared gas analyzer was used to monitor CO2 flux immediately following tillage. Effect of tillage on profile distribution of total and labile (particulate and oxidizable) SOC was determined. At 24 to 32 mo following tillage, SOC mass was determined for depths of 0 to 5, 5 to 20, and 20 to 30 cm. Some tillage operations effectively redistributed total and labile SOC with little increase in CO2 flux compared with NT. TotalandlabileSOCconcentrationswerereducedby24to88%inthe 0- to 2.5-cm depth and increased by 13 to 381% for the 5- to 10-cm depth for the various tillage operations. Moldboard plowing caused the greatest redistribution of SOC. On an equivalent soil mass basis, tillage did not cause significant losses of total or labile SOC between tillage and planting of the next crop or by 24 to 32 mo after tillage. Stratification of SOC in long-term NT soil could be reduced most effectively by means of one-time MP tillage without increased loss of labile SOC.
653 $aCARBON DIOXIDE
653 $aSOIL MICROORGANISMS
653 $aSOYBEANS
653 $aZEA MAYS
700 1 $aWORTMANN, C.S.
700 1 $aMAMO, M.
700 1 $aFRANTI, T.G.
700 1 $aDRIJBER, R.A.
773 $tAgronomy Journal, July 2007, Volume 99, Issue 4, Pages 1158-1168.
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