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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
02/04/2002 |
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Data da última atualização: |
02/04/2002 |
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Autoria: |
SANO, E. E.; MORAN, M. S.; HUETE, A. R.; MIURA, T. |
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Título: |
Ku-Band SAR data for bare soil moisture retrieval over agricultural fields. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
[S.l.: IEEE], 1997. |
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Páginas: |
nao paginado. |
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Idioma: |
Inglês |
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Notas: |
Apresentado no INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, IGARSS'97. |
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Conteúdo: |
This study focused on the analyses of multiangle, Kuband (14.85 GHz), synthetic aperture radar (SAR) data for bare soil moisture retrieval over agricultural fields. The radar data were acquired at three incidence angles (35º, 55º, and 75º), VV polarization, and 2-m nominal spatial resolution. The fields presented either a small scale or an intermediate scale periodic soil roughness components, associated with levelbasin and furrow irrigation systems, respectively. Both of these periodic structures were randomly pertubed by the presence of soil clods. Radar backscatter and soil surface moisture data were obtained from 39 borders (within field level basins). The results showed that the bare soil moisture retrieval over agricultural fields with periodic roughness components from ku-band SAR data is dependent upon the insidence angle and the soil roughness condition. For fields with level basin irrigation system, a good linear relationship getween radar backscattering coefficients and volumetric soil moisture contents was found, especially at 35º incidence angle ( r ao quadrado igual 0.90; for 55º and 75 incidence angles, e 0.74 and 0.41, respectively). However, for fields with the furrow irrigation system, the radar backscattering data were nearly insensitive to soil moisture due to the stronger influence of soil roughness. |
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Thesagro: |
Sensoriamento Remoto; Umidade do Solo. |
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Thesaurus Nal: |
remote sensing; soil water content. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02010naa a2200229 a 4500
001 1564585
005 2002-04-02
008 1997 bl uuuu u00u1 u #d
100 1 $aSANO, E. E.
245 $aKu-Band SAR data for bare soil moisture retrieval over agricultural fields.
260 $c1997
300 $anao paginado.
500 $aApresentado no INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, IGARSS'97.
520 $aThis study focused on the analyses of multiangle, Kuband (14.85 GHz), synthetic aperture radar (SAR) data for bare soil moisture retrieval over agricultural fields. The radar data were acquired at three incidence angles (35º, 55º, and 75º), VV polarization, and 2-m nominal spatial resolution. The fields presented either a small scale or an intermediate scale periodic soil roughness components, associated with levelbasin and furrow irrigation systems, respectively. Both of these periodic structures were randomly pertubed by the presence of soil clods. Radar backscatter and soil surface moisture data were obtained from 39 borders (within field level basins). The results showed that the bare soil moisture retrieval over agricultural fields with periodic roughness components from ku-band SAR data is dependent upon the insidence angle and the soil roughness condition. For fields with level basin irrigation system, a good linear relationship getween radar backscattering coefficients and volumetric soil moisture contents was found, especially at 35º incidence angle ( r ao quadrado igual 0.90; for 55º and 75 incidence angles, e 0.74 and 0.41, respectively). However, for fields with the furrow irrigation system, the radar backscattering data were nearly insensitive to soil moisture due to the stronger influence of soil roughness.
650 $aremote sensing
650 $asoil water content
650 $aSensoriamento Remoto
650 $aUmidade do Solo
700 1 $aMORAN, M. S.
700 1 $aHUETE, A. R.
700 1 $aMIURA, T.
773 $t[S.l.: IEEE], 1997.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrossilvipastoril; Embrapa Arroz e Feijão; Embrapa Florestas; Embrapa Unidades Centrais. |
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Data corrente: |
14/06/2022 |
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Data da última atualização: |
14/06/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
MAGALHÃES, C. A. de S.; SANTOS, B. L. da S. dos; PETTER, F. A.; MATOS, E. da S.; FURTINI, I. V.; MORALES, M. M. |
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Afiliação: |
CIRO AUGUSTO DE SOUZA MAGALHAES, CPAMT; BRUNA LARISSA DA SILVA DOS SANTOS, UFMT, Sinop-MT; FABIANO ANDRÉ PETTER, UFMT, Sinop-MT; EDUARDO DA SILVA MATOS, SIRE; ISABELA VOLPI FURTINI, CNPAF; MARINA MOURA MORALES, CNPF. |
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Título: |
The use of biochar-urea pellet formulations to reduced nitrogen losses. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Nativa, v. 10, n. 2, p. 184-190, 2022. |
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ISSN: |
2318-7670 |
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DOI: |
https://doi.org/10.31413/nativa.v10i2.13529 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: This study aimed to evaluate the effects of soil texture, fertilizer formulation and nitrogen dose on the characteristics of upland rice production, and to compare the Agronomic Efficiency Index (AEI) of formulations of biochar-urea pellets (BUPs). The treatments comprised four fertilizers (three formulations of BUP and urea) and five nitrogen doses (0, 75, 150, 300 and 600 mg dm-3), analyzed in two soil (sandy and clay). For each soil texture, a greenhouse experiment was established as a randomized block design with a 5 x 4 factorial arrangement and four replicates. Chlorophyll index, plant height, number of tillers and panicles, dry mass of aerial parts and of grains were all affected significantly by soil texture, fertilizer formulation and nitrogen dose and/or by the interactions between these sources of variation. The results demonstrated that the performances of BUPs are highly dependent on soil texture. Under sandy soil, application of BUP-based fertilizers contributed to the increase or maintenance of grain production compared to that of urea alone. Whereas under clayey soil the performance of BUPs exceeded that of urea only at low nitrogen doses. Compared to urea, BUPs were more efficient under sandy soil, with potential to increase AEI. | Resumo: Este trabalho objetivou avaliar os efeitos da textura do solo, formulações e doses de nitrogênio em características do arroz de terras altas, e comparar o Índice de Eficiência Agronômica (AEI) das formulações de pellets de biochar-ureia (BUP?s). Os tratamentos foram: quatro fertilizantes (três formulações de BUP e ureia) e cinco doses de nitrogênio (0, 75, 150, 300 and 600 mg dm-3), avaliados em dois solos de textura distinta. Para cada solo (arenoso e argiloso), foi conduzido um experimento em casa-de-vegetação em blocos casualizados em um arranjo fatorial 5 (doses) x 4 (fertilizantes), com quatro repetições. O índice de clorofila, altura de plantas, número de perfilhos, número de panículas, massa seca de parte aérea, massa seca de grãos tiveram diferenças significativas em função da textura do solo, fertilizantes e doses de N e/ou pelas interações entre esses fatores. Os resultados demonstraram que o desempenho dos BUP?s foi dependente da textura do solo, com melhores respostas no solo arenoso em relação à ureia, com potencial de elevar a eficiência agronômica da adubação nitrogenada. MenosAbstract: This study aimed to evaluate the effects of soil texture, fertilizer formulation and nitrogen dose on the characteristics of upland rice production, and to compare the Agronomic Efficiency Index (AEI) of formulations of biochar-urea pellets (BUPs). The treatments comprised four fertilizers (three formulations of BUP and urea) and five nitrogen doses (0, 75, 150, 300 and 600 mg dm-3), analyzed in two soil (sandy and clay). For each soil texture, a greenhouse experiment was established as a randomized block design with a 5 x 4 factorial arrangement and four replicates. Chlorophyll index, plant height, number of tillers and panicles, dry mass of aerial parts and of grains were all affected significantly by soil texture, fertilizer formulation and nitrogen dose and/or by the interactions between these sources of variation. The results demonstrated that the performances of BUPs are highly dependent on soil texture. Under sandy soil, application of BUP-based fertilizers contributed to the increase or maintenance of grain production compared to that of urea alone. Whereas under clayey soil the performance of BUPs exceeded that of urea only at low nitrogen doses. Compared to urea, BUPs were more efficient under sandy soil, with potential to increase AEI. | Resumo: Este trabalho objetivou avaliar os efeitos da textura do solo, formulações e doses de nitrogênio em características do arroz de terras altas, e comparar o Índice de Eficiência Agronômica (AEI) das formulações de ... Mostrar Tudo |
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Palavras-Chave: |
Adubação nitrogenada; Pirólise; Pó de serra. |
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Thesagro: |
Arroz; Fertilizante; Lixiviação. |
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Thesaurus NAL: |
Fertilizers; Leaching; Pyrolysis; Sawdust; Wood. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1144049/1/2022-cpamt-casm-the-use-biochar-urea-pellet-formulations-reduced-nitrogen-losses.pdf
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Marc: |
LEADER 03344naa a2200337 a 4500
001 2144049
005 2022-06-14
008 2022 bl uuuu u00u1 u #d
022 $a2318-7670
024 7 $ahttps://doi.org/10.31413/nativa.v10i2.13529$2DOI
100 1 $aMAGALHÃES, C. A. de S.
245 $aThe use of biochar-urea pellet formulations to reduced nitrogen losses.$h[electronic resource]
260 $c2022
520 $aAbstract: This study aimed to evaluate the effects of soil texture, fertilizer formulation and nitrogen dose on the characteristics of upland rice production, and to compare the Agronomic Efficiency Index (AEI) of formulations of biochar-urea pellets (BUPs). The treatments comprised four fertilizers (three formulations of BUP and urea) and five nitrogen doses (0, 75, 150, 300 and 600 mg dm-3), analyzed in two soil (sandy and clay). For each soil texture, a greenhouse experiment was established as a randomized block design with a 5 x 4 factorial arrangement and four replicates. Chlorophyll index, plant height, number of tillers and panicles, dry mass of aerial parts and of grains were all affected significantly by soil texture, fertilizer formulation and nitrogen dose and/or by the interactions between these sources of variation. The results demonstrated that the performances of BUPs are highly dependent on soil texture. Under sandy soil, application of BUP-based fertilizers contributed to the increase or maintenance of grain production compared to that of urea alone. Whereas under clayey soil the performance of BUPs exceeded that of urea only at low nitrogen doses. Compared to urea, BUPs were more efficient under sandy soil, with potential to increase AEI. | Resumo: Este trabalho objetivou avaliar os efeitos da textura do solo, formulações e doses de nitrogênio em características do arroz de terras altas, e comparar o Índice de Eficiência Agronômica (AEI) das formulações de pellets de biochar-ureia (BUP?s). Os tratamentos foram: quatro fertilizantes (três formulações de BUP e ureia) e cinco doses de nitrogênio (0, 75, 150, 300 and 600 mg dm-3), avaliados em dois solos de textura distinta. Para cada solo (arenoso e argiloso), foi conduzido um experimento em casa-de-vegetação em blocos casualizados em um arranjo fatorial 5 (doses) x 4 (fertilizantes), com quatro repetições. O índice de clorofila, altura de plantas, número de perfilhos, número de panículas, massa seca de parte aérea, massa seca de grãos tiveram diferenças significativas em função da textura do solo, fertilizantes e doses de N e/ou pelas interações entre esses fatores. Os resultados demonstraram que o desempenho dos BUP?s foi dependente da textura do solo, com melhores respostas no solo arenoso em relação à ureia, com potencial de elevar a eficiência agronômica da adubação nitrogenada.
650 $aFertilizers
650 $aLeaching
650 $aPyrolysis
650 $aSawdust
650 $aWood
650 $aArroz
650 $aFertilizante
650 $aLixiviação
653 $aAdubação nitrogenada
653 $aPirólise
653 $aPó de serra
700 1 $aSANTOS, B. L. da S. dos
700 1 $aPETTER, F. A.
700 1 $aMATOS, E. da S.
700 1 $aFURTINI, I. V.
700 1 $aMORALES, M. M.
773 $tNativa$gv. 10, n. 2, p. 184-190, 2022.
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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