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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Ocidental. |
Data corrente: |
12/04/2001 |
Data da última atualização: |
23/12/2014 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
DINKELMEYER, H.; LEHMANN, J.; KAISER, K.; TEIXEIRA, W. G.; RENCK, A.; ZECH, W. |
Afiliação: |
University of Bayreuth; Embrapa Amazonia Ocidental. |
Título: |
Fate of applied N fertilizer in mixed cropping systems in the central Amazon. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 3., 2000, Manaus. Sistemas agroflorestais: manejando a biodiversidade e compondo a paisagem rural - resumos expandidos. Manaus: Embrapa Amazonia Ocidental, 2000. |
Páginas: |
p. 196-197. |
Idioma: |
Inglês |
Conteúdo: |
Aim of the study was to investigate the nitrogen dynamics and the fate of applied nitrogen fertilizer in the soil-plant system of a mixed cropping system consisting of peach palm, cupuacu, urucu, and Brazil nut, in the Manaus-AM (Brasil). According the results, annato, cupuacu and peach palm seemed to take up more than 90% of th incorporated nitrogen fertilizer under their own canopy. However, Brazil nut took up more than 70% of the fertilized nitrogen from the fertilized areas under the canopies of the neighboring trees (peach palm: 40%, annato: 25%, cupuacu: 8%) two weeks of the fertilizer application. At the end of the rainy season, Brazil nut even took up more than 80% from underneath neighboring trees crops (peach palm: 42%, annato: 36%, cupuacu: 6%). Furthemrmore, peach palm and Brazil nut were better able than the other two trees in reducing nutrient leaching due to their deep root system. |
Palavras-Chave: |
Agrofloresta; Agroforesty; Amazonas; Bixa orella; Brasil; Fertilizers application; Manaus; Sustainability; Urucu. |
Thesagro: |
Adubação; Bactris Gasipaes; Bertholletia Excelsa; Castanha do Para; Cultivo Multiplo; Desenvolvimento Sustentável; Floresta Tropical Úmida; Lixiviação; Nitrogênio; Pupunha; Raiz; Uso da Terra. |
Thesaurus Nal: |
land use; leaching; multiple cropping; nitrogen; tropical rain forests. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/114393/1/CPAA-DOC.-7-207.pdf
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Marc: |
LEADER 02346nam a2200493 a 4500 001 1670612 005 2014-12-23 008 2000 bl uuuu u00u1 u #d 100 1 $aDINKELMEYER, H. 245 $aFate of applied N fertilizer in mixed cropping systems in the central Amazon. 260 $aIn: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 3., 2000, Manaus. Sistemas agroflorestais: manejando a biodiversidade e compondo a paisagem rural - resumos expandidos. Manaus: Embrapa Amazonia Ocidental$c2000 300 $ap. 196-197. 520 $aAim of the study was to investigate the nitrogen dynamics and the fate of applied nitrogen fertilizer in the soil-plant system of a mixed cropping system consisting of peach palm, cupuacu, urucu, and Brazil nut, in the Manaus-AM (Brasil). According the results, annato, cupuacu and peach palm seemed to take up more than 90% of th incorporated nitrogen fertilizer under their own canopy. However, Brazil nut took up more than 70% of the fertilized nitrogen from the fertilized areas under the canopies of the neighboring trees (peach palm: 40%, annato: 25%, cupuacu: 8%) two weeks of the fertilizer application. At the end of the rainy season, Brazil nut even took up more than 80% from underneath neighboring trees crops (peach palm: 42%, annato: 36%, cupuacu: 6%). Furthemrmore, peach palm and Brazil nut were better able than the other two trees in reducing nutrient leaching due to their deep root system. 650 $aland use 650 $aleaching 650 $amultiple cropping 650 $anitrogen 650 $atropical rain forests 650 $aAdubação 650 $aBactris Gasipaes 650 $aBertholletia Excelsa 650 $aCastanha do Para 650 $aCultivo Multiplo 650 $aDesenvolvimento Sustentável 650 $aFloresta Tropical Úmida 650 $aLixiviação 650 $aNitrogênio 650 $aPupunha 650 $aRaiz 650 $aUso da Terra 653 $aAgrofloresta 653 $aAgroforesty 653 $aAmazonas 653 $aBixa orella 653 $aBrasil 653 $aFertilizers application 653 $aManaus 653 $aSustainability 653 $aUrucu 700 1 $aLEHMANN, J. 700 1 $aKAISER, K. 700 1 $aTEIXEIRA, W. G. 700 1 $aRENCK, A. 700 1 $aZECH, W.
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Embrapa Amazônia Ocidental (CPAA) |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
07/12/2016 |
Data da última atualização: |
10/07/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
CRUSIOL, L. G. T.; CARVALHO, J. de F. C.; SIBALDELLI, R. N. R.; NEIVERTH, W.; RIO, A. do; FERREIRA, L. C.; PROCOPIO, S. de O.; MERTZ-HENNING, L. M.; NEPOMUCENO, A. L.; NEUMAIER, N.; FARIAS, J. R. B. |
Afiliação: |
LUIS GUILHERME TEIXEIRA CRUSIOL, UEL; JOSIRLEY DE FATIMA CORREA CARVALHO, Pós-graduanda; RUBSON NATAL RIBEIRO SIBALDELLI, UTFPR; WALKYRIA NEIVERTH, Pós-graduanda; ALEXANDRE DO RIO, ESALQ; LEONARDO CESAR FERREIRA; SERGIO DE OLIVEIRA PROCOPIO, CPATC; LILIANE MARCIA MERTZ HENNING, CNPSO; ALEXANDRE LIMA NEPOMUCENO, CNPSO; NORMAN NEUMAIER, CNPSO; JOSE RENATO BOUCAS FARIAS, CNPSO. |
Título: |
NDVI variation according to the time of measurement, sampling size, positioning of sensor and water regime in different soybean cultivars. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Precision Agriculture, v. 18, n. 4. p. 470-490, Aug. 2017. |
ISSN: |
1573-1618 |
DOI: |
10.1007/s11119-016-9465-6 |
Idioma: |
Inglês |
Conteúdo: |
Although the information on the Normalized Difference Vegetation Index (NDVI) in plants under water deficit is often obtained from sensors attached to satellites, the increasing data acquisition with portable sensors has wide applicability in agricultural production because it is a fast, nondestructive method, and is less prone to interference problems. Thus, we carried out a set of experiments to investigate the influence of time, spatial plant arrangements, sampling size, height of the sensor and water regimes on NDVI readings in different soybean cultivars in greenhouse and field trials during the crop seasons 2011/12, 2012/13 and 2013/14. In experiments where plants were always evaluated under well-watered conditions, we observed that 9 a.m. was the most suitable time for NDVI readings regardless of the soybean cultivar, spatial arrangement or environment. Furthermore, there was no difference among NDVI readings in relation to the sampling size, regardless of the date or cultivar. We also observed that NDVI tended to decrease according to the higher height of the sensor in relation to the canopy top, with higher values tending to be at 0.8 m, but with no significant difference relative to 1.0 m? the height we adopted in our experiments. When different water regimes were induced under field conditions, NDVI readings measured at 9 a.m. by using a portable sensor were successful to differentiate soybean cultivars with contrasting responses to drought. |
Thesagro: |
Agricultura de precisão; Relação água-planta; Sensoriamento remoto; Soja; Variedade. |
Thesaurus NAL: |
Canopy; Cultivars; Plant-water relations; Precision agriculture; Remote sensing; Soybeans. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 02672naa a2200397 a 4500 001 2058176 005 2017-07-10 008 2017 bl uuuu u00u1 u #d 022 $a1573-1618 024 7 $a10.1007/s11119-016-9465-6$2DOI 100 1 $aCRUSIOL, L. G. T. 245 $aNDVI variation according to the time of measurement, sampling size, positioning of sensor and water regime in different soybean cultivars.$h[electronic resource] 260 $c2017 520 $aAlthough the information on the Normalized Difference Vegetation Index (NDVI) in plants under water deficit is often obtained from sensors attached to satellites, the increasing data acquisition with portable sensors has wide applicability in agricultural production because it is a fast, nondestructive method, and is less prone to interference problems. Thus, we carried out a set of experiments to investigate the influence of time, spatial plant arrangements, sampling size, height of the sensor and water regimes on NDVI readings in different soybean cultivars in greenhouse and field trials during the crop seasons 2011/12, 2012/13 and 2013/14. In experiments where plants were always evaluated under well-watered conditions, we observed that 9 a.m. was the most suitable time for NDVI readings regardless of the soybean cultivar, spatial arrangement or environment. Furthermore, there was no difference among NDVI readings in relation to the sampling size, regardless of the date or cultivar. We also observed that NDVI tended to decrease according to the higher height of the sensor in relation to the canopy top, with higher values tending to be at 0.8 m, but with no significant difference relative to 1.0 m? the height we adopted in our experiments. When different water regimes were induced under field conditions, NDVI readings measured at 9 a.m. by using a portable sensor were successful to differentiate soybean cultivars with contrasting responses to drought. 650 $aCanopy 650 $aCultivars 650 $aPlant-water relations 650 $aPrecision agriculture 650 $aRemote sensing 650 $aSoybeans 650 $aAgricultura de precisão 650 $aRelação água-planta 650 $aSensoriamento remoto 650 $aSoja 650 $aVariedade 700 1 $aCARVALHO, J. de F. C. 700 1 $aSIBALDELLI, R. N. R. 700 1 $aNEIVERTH, W. 700 1 $aRIO, A. do 700 1 $aFERREIRA, L. C. 700 1 $aPROCOPIO, S. de O. 700 1 $aMERTZ-HENNING, L. M. 700 1 $aNEPOMUCENO, A. L. 700 1 $aNEUMAIER, N. 700 1 $aFARIAS, J. R. B. 773 $tPrecision Agriculture$gv. 18, n. 4. p. 470-490, Aug. 2017.
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