|
|
Registros recuperados : 281 | |
16. | | GREGO, C. R.; OLIVEIRA, R. P. de; VIEIRA, S. R. Geoestatística aplicada a Agricultura de Precisão. In: BERNARDI, A. C. de C.; NAIME, J. de M.; RESENDE, A. V. de; BASSOI, L. H.; INAMASU, R. Y. (Ed.). Agricultura de precisão: resultados de um novo olhar. Brasília, DF: Embrapa, 2014. p. 74-83 Biblioteca(s): Embrapa Solos; Embrapa Territorial. |
| |
Registros recuperados : 281 | |
|
|
Registro Completo
Biblioteca(s): |
Embrapa Territorial. |
Data corrente: |
21/01/2011 |
Data da última atualização: |
26/04/2019 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
ANDRADE, R. G.; BERNARDI, A. C. de C.; GREGO, C. R.; INAMASU, R. Y.; RABELLO, L. M.; VAZ, C. M. P. |
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. |
Título: |
Spatial variability of crop and soil properties in a crop-livestock integrated system. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE, 10., 2010. Denver, CO. Anais... Denver, CO: Colorado State: IPNI: FAR, 2010. |
Idioma: |
Inglês |
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 |
Palavras-Chave: |
Field sensor; Landsat 5; NDVI; VERIS. |
Thesaurus NAL: |
electrical conductivity; geostatistics; soil fertility; soil texture. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/25812/1/abstract-285.pdf
|
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.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Territorial (CNPM) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|