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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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Origem |
Tipo/Formato |
Classificação |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Unidades Centrais. |
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Data corrente: |
07/10/1999 |
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Data da última atualização: |
11/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
NETTO, D. A. M.; BORBA, C. S.; OLIVEIRA, A. C. de; AZEVEDO, J. T. de; ANDRADE, R. V. |
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Afiliação: |
DEA ALECIA MARTINS NETTO, CNPMS; ANTONIO CARLOS DE OLIVEIRA, CNPMS. |
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Título: |
Efeito de diferentes graus de dano mecânico na qualidade fisiológica de sementes de sorgo. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v. 34, n. 8, p. 1475-1480, 1999. |
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Idioma: |
Português |
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Conteúdo: |
Diversas amostras de sementes de sorgo (Sorghum bicolor L. Moench), cultivar BR 303, com diferentes niveis de danos mecanicos, foram analisadas com o objetivo de determinar o efeito imediato de danos mecanicos sobre a qualidade fisiologica. Os percentuais de dano mecanico foram determinados pelo teste de verde rapido, e a qualidade fisiologica das sementes pelos testes de germinacao, envelhecimento acelerado, teste frio, indice de velocidade de emergencia e populacao inicial de plantulas. O experimento foi conduzido no Laboratorio de Analises de Sementes da Embrapa - Centro Nacional de Pesquisa de Milho e Sorgo (CNPMS), em Sete Lagoas, MG. Atraves da analise de regressao, verificou-se que houve reducao significativa da germinacao e do vigor quando as sementes apresentaram ate 5% de dano; de 5% a 15% de dano a reducao na qualidade fisiologica nao foi significativa. Acima de 15% ate 23% de dano a germinacao e o vigor sofreram um decrescimo de 22,5%, em comparacao com o controle. O efeito prejudicial imediato dos danos mecanicos sobre a qualidade fisiologica das sementes de sorgo pode ser detectada pelos testes aplicados. |
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Palavras-Chave: |
Damage degrees; Niveis de dano; Seed; Testes de vigor; Vigor tests. |
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Thesagro: |
Dano Mecânico; Germinação; Semente; Sorghum Bicolor; Sorgo. |
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Thesaurus NAL: |
germination; mechanical damage; vigor. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/AI-SEDE/16298/1/pab97134j.pdf
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Marc: |
LEADER 02026naa a2200325 a 4500
001 1482757
005 2021-12-11
008 1999 bl uuuu u00u1 u #d
100 1 $aNETTO, D. A. M.
245 $aEfeito de diferentes graus de dano mecânico na qualidade fisiológica de sementes de sorgo.
260 $c1999
520 $aDiversas amostras de sementes de sorgo (Sorghum bicolor L. Moench), cultivar BR 303, com diferentes niveis de danos mecanicos, foram analisadas com o objetivo de determinar o efeito imediato de danos mecanicos sobre a qualidade fisiologica. Os percentuais de dano mecanico foram determinados pelo teste de verde rapido, e a qualidade fisiologica das sementes pelos testes de germinacao, envelhecimento acelerado, teste frio, indice de velocidade de emergencia e populacao inicial de plantulas. O experimento foi conduzido no Laboratorio de Analises de Sementes da Embrapa - Centro Nacional de Pesquisa de Milho e Sorgo (CNPMS), em Sete Lagoas, MG. Atraves da analise de regressao, verificou-se que houve reducao significativa da germinacao e do vigor quando as sementes apresentaram ate 5% de dano; de 5% a 15% de dano a reducao na qualidade fisiologica nao foi significativa. Acima de 15% ate 23% de dano a germinacao e o vigor sofreram um decrescimo de 22,5%, em comparacao com o controle. O efeito prejudicial imediato dos danos mecanicos sobre a qualidade fisiologica das sementes de sorgo pode ser detectada pelos testes aplicados.
650 $agermination
650 $amechanical damage
650 $avigor
650 $aDano Mecânico
650 $aGerminação
650 $aSemente
650 $aSorghum Bicolor
650 $aSorgo
653 $aDamage degrees
653 $aNiveis de dano
653 $aSeed
653 $aTestes de vigor
653 $aVigor tests
700 1 $aBORBA, C. S.
700 1 $aOLIVEIRA, A. C. de
700 1 $aAZEVEDO, J. T. de
700 1 $aANDRADE, R. V.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 34, n. 8, p. 1475-1480, 1999.
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Embrapa Milho e Sorgo (CNPMS) |
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