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Registro Completo |
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
21/01/2011 |
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Data da última atualização: |
26/04/2019 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
ANDRADE, R. G.; BERNARDI, A. C. de C.; GREGO, C. R.; INAMASU, R. Y.; RABELLO, L. M.; VAZ, C. M. P. |
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Afiliação: |
RICARDO GUIMARAES ANDRADE, CNPM; ALBERTO CARLOS DE CAMPOS BERNARDI, CPPSE; CELIA REGINA GREGO, CNPM; RICARDO YASSUSHI INAMASU, CNPDIA; LADISLAU MARCELINO RABELLO, CNPDIA; CARLOS MANOEL PEDRO VAZ, CNPDIA. |
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Título: |
Spatial variability of crop and soil properties in a crop-livestock integrated system. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE, 10., 2010. Denver, CO. Anais... Denver, CO: Colorado State: IPNI: FAR, 2010. |
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Idioma: |
Inglês |
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Conteúdo: |
The knowledge of spatial variability soil properties is useful in the rational use of inputs, as in the site specific application of lime and fertilizer. The objective of this work was to map and evaluate the spatial variability of the corn and pasture, soil chemical and physical properties in crop-livestock integrated system. The study was conducted in an area of 6.9 ha of a Typic Paleudult in Sao Carlos, SP, Brazil. The summer crop corn was sowed together with the forage crop Brachiaria brizantha in the system of crop-livestock rotation. A regular hexagon sampling grid design with 6 sub-samples was adopted for each hectare. The values of soil P, K, Ca, Mg, and CEC, basis saturation, clay and sand were analyzed by traditional soil testing in georreferenced samples collected at 0?0.2 m depth. Soil electrical conductivity (EC) was measured with a contact sensor. The site was evaluated at the end of the corn season (April) and for the forage (October) by imageries from the Landsat 5 using remote sensing techniques and a geographic information system. Normalized difference vegetation index (NDVI) was used to interpret imageries. Spatial continuity of crop and soil properties was modeled using semivariograms. Maps contours of crop and forage were obtained by kriging, and maps of soil properties by using inverse distance weighting interpolation. Results from this study showed that the NDVI was associated with ECa and soil parameters indicating crop and pasture variations on crop-livestock integrated system. Sampling density adopted was insufficient for an adequate characterization of the spatial variability of soil parameters as pH, O.M., P, K, V%, CEC, clay and sand. Estimated VRT maps compared to estimated uniformly applied lime and P and K fertilizer recommendation indicate that VRT could be more adequate to lime and potash recommendation, and and would have little effect on P fertilization. MenosThe knowledge of spatial variability soil properties is useful in the rational use of inputs, as in the site specific application of lime and fertilizer. The objective of this work was to map and evaluate the spatial variability of the corn and pasture, soil chemical and physical properties in crop-livestock integrated system. The study was conducted in an area of 6.9 ha of a Typic Paleudult in Sao Carlos, SP, Brazil. The summer crop corn was sowed together with the forage crop Brachiaria brizantha in the system of crop-livestock rotation. A regular hexagon sampling grid design with 6 sub-samples was adopted for each hectare. The values of soil P, K, Ca, Mg, and CEC, basis saturation, clay and sand were analyzed by traditional soil testing in georreferenced samples collected at 0?0.2 m depth. Soil electrical conductivity (EC) was measured with a contact sensor. The site was evaluated at the end of the corn season (April) and for the forage (October) by imageries from the Landsat 5 using remote sensing techniques and a geographic information system. Normalized difference vegetation index (NDVI) was used to interpret imageries. Spatial continuity of crop and soil properties was modeled using semivariograms. Maps contours of crop and forage were obtained by kriging, and maps of soil properties by using inverse distance weighting interpolation. Results from this study showed that the NDVI was associated with ECa and soil parameters indicating crop and pasture variations on crop-... Mostrar Tudo |
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Palavras-Chave: |
Field sensor; Landsat 5; NDVI; VERIS. |
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Thesaurus Nal: |
electrical conductivity; geostatistics; soil fertility; soil texture. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/25812/1/abstract-285.pdf
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Marc: |
LEADER 02752nam a2200265 a 4500
001 1873914
005 2019-04-26
008 2010 bl uuuu u00u1 u #d
100 1 $aANDRADE, R. G.
245 $aSpatial variability of crop and soil properties in a crop-livestock integrated system.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE, 10., 2010. Denver, CO. Anais... Denver, CO: Colorado State: IPNI: FAR$c2010
520 $aThe knowledge of spatial variability soil properties is useful in the rational use of inputs, as in the site specific application of lime and fertilizer. The objective of this work was to map and evaluate the spatial variability of the corn and pasture, soil chemical and physical properties in crop-livestock integrated system. The study was conducted in an area of 6.9 ha of a Typic Paleudult in Sao Carlos, SP, Brazil. The summer crop corn was sowed together with the forage crop Brachiaria brizantha in the system of crop-livestock rotation. A regular hexagon sampling grid design with 6 sub-samples was adopted for each hectare. The values of soil P, K, Ca, Mg, and CEC, basis saturation, clay and sand were analyzed by traditional soil testing in georreferenced samples collected at 0?0.2 m depth. Soil electrical conductivity (EC) was measured with a contact sensor. The site was evaluated at the end of the corn season (April) and for the forage (October) by imageries from the Landsat 5 using remote sensing techniques and a geographic information system. Normalized difference vegetation index (NDVI) was used to interpret imageries. Spatial continuity of crop and soil properties was modeled using semivariograms. Maps contours of crop and forage were obtained by kriging, and maps of soil properties by using inverse distance weighting interpolation. Results from this study showed that the NDVI was associated with ECa and soil parameters indicating crop and pasture variations on crop-livestock integrated system. Sampling density adopted was insufficient for an adequate characterization of the spatial variability of soil parameters as pH, O.M., P, K, V%, CEC, clay and sand. Estimated VRT maps compared to estimated uniformly applied lime and P and K fertilizer recommendation indicate that VRT could be more adequate to lime and potash recommendation, and and would have little effect on P fertilization.
650 $aelectrical conductivity
650 $ageostatistics
650 $asoil fertility
650 $asoil texture
653 $aField sensor
653 $aLandsat 5
653 $aNDVI
653 $aVERIS
700 1 $aBERNARDI, A. C. de C.
700 1 $aGREGO, C. R.
700 1 $aINAMASU, R. Y.
700 1 $aRABELLO, L. M.
700 1 $aVAZ, C. M. P.
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Registro original: |
Embrapa Territorial (CNPM) |
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Biblioteca |
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Origem |
Tipo/Formato |
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Cutter |
Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
03/08/2000 |
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Data da última atualização: |
09/06/2018 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CARVALHO, H. W. L. de; LEAL, M. de L. da; CARDOSO, M. J.; SANTOS, M. X. dos; TABOSA, M. J.; OLIVEIRA, J. S.; DOURADO, V. V.; CARVALHO, B. C. L.; SAMPAIO, G. V. |
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Afiliação: |
EMBRAPA-CNPMS. |
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Título: |
Adaptabilidade e estabilidade de cultivares de milho no nordeste brasileiro no ano agrícola de 1999. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE MILHO E SORGO, 23., 2000, Uberlândia. A inovação tecnológica e a competividade no contexto dos mercados globalizados: resumos. Sete Lagoas: ABMS: Embrapa Milho e Sorgo; Uberlândia: Universidade Federal de Uberlândia, 2000. p. 14. |
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Idioma: |
Português |
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Palavras-Chave: |
Adaptabilidade; Adaptability; Brasil; Estabilidade; Maize; Nordeste; Northeast; Stability; Variedades. |
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Thesagro: |
Melhoramento; Milho; Zea Mays. |
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Thesaurus NAL: |
Brazil; breeding; varieties. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/45407/1/Adaptabilidade-estabilidade-9.pdf
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Marc: |
LEADER 01231nam a2200373 a 4500
001 1484093
005 2018-06-09
008 2000 bl uuuu u00u1 u #d
100 1 $aCARVALHO, H. W. L. de
245 $aAdaptabilidade e estabilidade de cultivares de milho no nordeste brasileiro no ano agrícola de 1999.$h[electronic resource]
260 $aIn: CONGRESSO NACIONAL DE MILHO E SORGO, 23., 2000, Uberlândia. A inovação tecnológica e a competividade no contexto dos mercados globalizados: resumos. Sete Lagoas: ABMS: Embrapa Milho e Sorgo; Uberlândia: Universidade Federal de Uberlândia, 2000. p. 14.$c2000
650 $aBrazil
650 $abreeding
650 $avarieties
650 $aMelhoramento
650 $aMilho
650 $aZea Mays
653 $aAdaptabilidade
653 $aAdaptability
653 $aBrasil
653 $aEstabilidade
653 $aMaize
653 $aNordeste
653 $aNortheast
653 $aStability
653 $aVariedades
700 1 $aLEAL, M. de L. da
700 1 $aCARDOSO, M. J.
700 1 $aSANTOS, M. X. dos
700 1 $aTABOSA, M. J.
700 1 $aOLIVEIRA, J. S.
700 1 $aDOURADO, V. V.
700 1 $aCARVALHO, B. C. L.
700 1 $aSAMPAIO, G. V.
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Embrapa Milho e Sorgo (CNPMS) |
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