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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
06/10/2020 |
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Data da última atualização: |
28/06/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BEZERRA, J. L. de S.; ANDRADE NETO, R. de C.; LUNZ, A. M. P.; ARAÚJO, J. M. de; ARAÚJO, C. S. de. |
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Afiliação: |
Jéssica Larissa de Souza Bezerra, Universidade Federal do Acre (UFAC); ROMEU DE CARVALHO ANDRADE NETO, CPAF-AC; AURENY MARIA PEREIRA LUNZ, CPAF-AC; James Maciel de Araújo, Universidade Federal do Acre (UFAC); Cleyton Silva de Araújo, Universidade Federal do Acre (UFAC). |
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Título: |
Produção de mudas de açaizeiro (Euterpe oleracea) em resposta a diferentes fontes e doses de potássio. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Enciclopédia Biosfera, v. 17, n. 33, p. 348-360, 2020. |
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ISSN: |
2317-2606 |
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DOI: |
10.18677/EnciBio_2020C31 |
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Idioma: |
Português |
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Conteúdo: |
A fase de produção de mudas do açaizeiro é um dos mais importantes pré-requisitos para o sucesso da cultura em campo, sendo necessário o conhecimento de práticas de manejo, tais como adubação. O objetivo deste estudo foi avaliar os efeitos de fontes e doses de potássio na produção de mudas de açaizeiro (Euterpe oleracea). O experimento foi instalado e conduzido no campo experimental da Embrapa Acre em viveiro com sombrite de 50% de sombra, em delineamento em blocos casualizados completos, no esquema fatorial 3 x 5, com três repetições e seis plantas por parcela. Os fatores estudados foram três fontes de potássio (cloreto, silicato e sulfato de potássio) e cinco doses de potássio (0; 400; 800; 1200 e 1600 mg.dm3 ). Aos 180 dias após a repicagem foram mensuradas as seguintes variáveis, altura da planta (cm), diâmetro do coleto (mm), massa seca da parte aérea (g), da raiz e total das plantas (g), e índice de qualidade de Dickson. Os resultados foram submetidos à análise de variância e, havendo significância, as médias das fontes foram comparadas pelo teste de Tukey, enquanto para as doses procedeu-se à análise de regressão. Dentre as fontes de potássio utilizadas, o sulfato e silicato de potássio resultam na formação de mudas desta palmeira de melhor qualidade. O açaizeiro responde de forma significativa à aplicação de doses de adubos potássicos até a dose 1133 mg.dm3, resultando em melhores índices biométricos, e doses acima 1200 mg.dm3 ocasionam decréscimo biométrico e na biomassa das plantas. The seedling production phase of the assai palm is one of the most important prerequisites for the success of the field culture, requiring knowledge of management practices, such as fertilization. The objective of this study was to evaluate the effects of sources and doses of potassium on the production of assai palm seedlings (Euterpe oleracea). The experiment was installed and conducted in the Embrapa Acre experimental field in a nursery with 50% shade, in a complete randomized block design, in a 3 x 5 factorial scheme, with three replications and six plants per plot. The factors studied were three sources of potassium (chloride, silicate and potassium sulfate) and five doses of potassium (0; 400; 800; 1200 and 1600 mg.dm3 ). At 180 days after the subculture, the following variables were measured, plant height (cm), stem diameter (mm), shoot (g), root and total dry mass (g), and Dickson quality. The results were submitted to analysis of variance and, significant, the means of the sources were compared by the Tukey test, while for the doses the regression analysis was performed. Among the potassium sources used, potassium sulfate and silicate result in the formation of seedlings of this palm with better quality. The assai palm responds significantly to the application of doses of potassium fertilizers up to the dose 1133 mg.dm3 , resulting in better biometric indexes, and doses above 1200 mg.dm3 cause biometric and plant biomass decrease. MenosA fase de produção de mudas do açaizeiro é um dos mais importantes pré-requisitos para o sucesso da cultura em campo, sendo necessário o conhecimento de práticas de manejo, tais como adubação. O objetivo deste estudo foi avaliar os efeitos de fontes e doses de potássio na produção de mudas de açaizeiro (Euterpe oleracea). O experimento foi instalado e conduzido no campo experimental da Embrapa Acre em viveiro com sombrite de 50% de sombra, em delineamento em blocos casualizados completos, no esquema fatorial 3 x 5, com três repetições e seis plantas por parcela. Os fatores estudados foram três fontes de potássio (cloreto, silicato e sulfato de potássio) e cinco doses de potássio (0; 400; 800; 1200 e 1600 mg.dm3 ). Aos 180 dias após a repicagem foram mensuradas as seguintes variáveis, altura da planta (cm), diâmetro do coleto (mm), massa seca da parte aérea (g), da raiz e total das plantas (g), e índice de qualidade de Dickson. Os resultados foram submetidos à análise de variância e, havendo significância, as médias das fontes foram comparadas pelo teste de Tukey, enquanto para as doses procedeu-se à análise de regressão. Dentre as fontes de potássio utilizadas, o sulfato e silicato de potássio resultam na formação de mudas desta palmeira de melhor qualidade. O açaizeiro responde de forma significativa à aplicação de doses de adubos potássicos até a dose 1133 mg.dm3, resultando em melhores índices biométricos, e doses acima 1200 mg.dm3 ocasionam decréscimo biométrico e na bio... Mostrar Tudo |
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Palavras-Chave: |
Açaí de touceira; Acre; Amazonia Occidental; Amazônia Ocidental; Calidad de las semillas; Cultivos de viveros; Embrapa Acre; Fertilizantes fosforados; Prácticas de cultivo vegetal; Producción de plántulas; Rendimiento de los cultivos; Rio Branco (AC); Western Amazon. |
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Thesagro: |
Açaí; Campo Experimental; Euterpe Oleracea; Fertilizante Fosfatado; Muda; Pratica Cultural; Produção; Qualidade; Rendimento; Viveiro. |
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Thesaurus Nal: |
Crop yield; Nursery crops; Phosphorus fertilizers; Plant cultural practices; Seed quality; Seedling production. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/216435/1/27030.pdf
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Marc: |
LEADER 04612naa a2200541 a 4500
001 2125302
005 2021-06-28
008 2020 bl uuuu u00u1 u #d
022 $a2317-2606
024 7 $a10.18677/EnciBio_2020C31$2DOI
100 1 $aBEZERRA, J. L. de S.
245 $aProdução de mudas de açaizeiro (Euterpe oleracea) em resposta a diferentes fontes e doses de potássio.$h[electronic resource]
260 $c2020
520 $aA fase de produção de mudas do açaizeiro é um dos mais importantes pré-requisitos para o sucesso da cultura em campo, sendo necessário o conhecimento de práticas de manejo, tais como adubação. O objetivo deste estudo foi avaliar os efeitos de fontes e doses de potássio na produção de mudas de açaizeiro (Euterpe oleracea). O experimento foi instalado e conduzido no campo experimental da Embrapa Acre em viveiro com sombrite de 50% de sombra, em delineamento em blocos casualizados completos, no esquema fatorial 3 x 5, com três repetições e seis plantas por parcela. Os fatores estudados foram três fontes de potássio (cloreto, silicato e sulfato de potássio) e cinco doses de potássio (0; 400; 800; 1200 e 1600 mg.dm3 ). Aos 180 dias após a repicagem foram mensuradas as seguintes variáveis, altura da planta (cm), diâmetro do coleto (mm), massa seca da parte aérea (g), da raiz e total das plantas (g), e índice de qualidade de Dickson. Os resultados foram submetidos à análise de variância e, havendo significância, as médias das fontes foram comparadas pelo teste de Tukey, enquanto para as doses procedeu-se à análise de regressão. Dentre as fontes de potássio utilizadas, o sulfato e silicato de potássio resultam na formação de mudas desta palmeira de melhor qualidade. O açaizeiro responde de forma significativa à aplicação de doses de adubos potássicos até a dose 1133 mg.dm3, resultando em melhores índices biométricos, e doses acima 1200 mg.dm3 ocasionam decréscimo biométrico e na biomassa das plantas. The seedling production phase of the assai palm is one of the most important prerequisites for the success of the field culture, requiring knowledge of management practices, such as fertilization. The objective of this study was to evaluate the effects of sources and doses of potassium on the production of assai palm seedlings (Euterpe oleracea). The experiment was installed and conducted in the Embrapa Acre experimental field in a nursery with 50% shade, in a complete randomized block design, in a 3 x 5 factorial scheme, with three replications and six plants per plot. The factors studied were three sources of potassium (chloride, silicate and potassium sulfate) and five doses of potassium (0; 400; 800; 1200 and 1600 mg.dm3 ). At 180 days after the subculture, the following variables were measured, plant height (cm), stem diameter (mm), shoot (g), root and total dry mass (g), and Dickson quality. The results were submitted to analysis of variance and, significant, the means of the sources were compared by the Tukey test, while for the doses the regression analysis was performed. Among the potassium sources used, potassium sulfate and silicate result in the formation of seedlings of this palm with better quality. The assai palm responds significantly to the application of doses of potassium fertilizers up to the dose 1133 mg.dm3 , resulting in better biometric indexes, and doses above 1200 mg.dm3 cause biometric and plant biomass decrease.
650 $aCrop yield
650 $aNursery crops
650 $aPhosphorus fertilizers
650 $aPlant cultural practices
650 $aSeed quality
650 $aSeedling production
650 $aAçaí
650 $aCampo Experimental
650 $aEuterpe Oleracea
650 $aFertilizante Fosfatado
650 $aMuda
650 $aPratica Cultural
650 $aProdução
650 $aQualidade
650 $aRendimento
650 $aViveiro
653 $aAçaí de touceira
653 $aAcre
653 $aAmazonia Occidental
653 $aAmazônia Ocidental
653 $aCalidad de las semillas
653 $aCultivos de viveros
653 $aEmbrapa Acre
653 $aFertilizantes fosforados
653 $aPrácticas de cultivo vegetal
653 $aProducción de plántulas
653 $aRendimiento de los cultivos
653 $aRio Branco (AC)
653 $aWestern Amazon
700 1 $aANDRADE NETO, R. de C.
700 1 $aLUNZ, A. M. P.
700 1 $aARAÚJO, J. M. de
700 1 $aARAÚJO, C. S. de
773 $tEnciclopédia Biosfera$gv. 17, n. 33, p. 348-360, 2020.
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Registro original: |
Embrapa Acre (CPAF-AC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
06/03/2018 |
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Data da última atualização: |
10/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
PINHEIRO, E. F. M.; CEDDIA, M. B.; CLINGENSMITH, C. M.; GRUNWALD, S.; VASQUES, G. de M. |
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Afiliação: |
ÉRIKA F. M. PINHEIRO, UFRRJ; MARCOS BACIS CEDDIA, UFRRJ; CHRISTOPHER M. CLINGENSMITH, UNIVERSITY OF FLORIDA; SABINE GRUNWALD, UNIVERSITY OF FLORIDA; GUSTAVO DE MATTOS VASQUES, CNPS. |
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Título: |
Prediction of soil physical and chemical properties by visible and near-infrared diffuse reflectance spectroscopy in the Central Amazon. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Remote Sensing, v. 9, n. 4, Apr. 2017. |
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DOI: |
https://doi.org/10.3390/rs9040293 |
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Idioma: |
Inglês |
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Conteúdo: |
Visible and near-infrared diffuse reflectance spectroscopy (VIS-NIR) has shown levels of accuracy comparable to conventional laboratory methods for estimating soil properties. Soil chemical and physical properties have been predicted by reflectance spectroscopy successfully on subtropical and temperate soils, whereas soils from tropical agro-forest regions have received less attention, especially those from tropical rainforests. A spectral characterization provides a proficient pathway for soil characterization. The first step in this process is to develop a comprehensive VIS-NIR soil library of multiple key soil properties to be used in future soil surveys. This paper presents the first VIS-NIR soil library for a remote region in the Central Amazon. We evaluated the performance of VIS-NIR for the prediction of soil properties in the Central Amazon, Brazil. Soil properties measured and predicted were: pH, Ca, Mg, Al, H, H+Al, P, organic C (SOC), sum of bases, cation exchange capacity (CEC), percentage of base saturation (V), Al saturation (m), clay, sand, silt, silt/clay (S/C), and degree of flocculation. Soil samples were scanned in the laboratory in the VIS-NIR range (350-2500 nm), and forty-one pre-processing methods were tested to improve predictions. Clay content was predicted with the highest accuracy, followed by SOC. Sand, S/C, H, Al, H+Al, CEC, m and V predictions were reasonably good. The other soil properties were poorly predicted. Among the soil properties predicted well, SOC is one of the critical soil indicators in the global carbon cycle. Besides the soil property of interest, the landscape position, soil order and depth influenced in the model performance. For silt content, pH and S/C, the model performed better in well-drained soils, whereas for SOC best predictions were obtained in poorly drained soils. The association of VIS-NIR spectral data to landforms, vegetation classes, and soil types demonstrate potential for soil characterization. MenosVisible and near-infrared diffuse reflectance spectroscopy (VIS-NIR) has shown levels of accuracy comparable to conventional laboratory methods for estimating soil properties. Soil chemical and physical properties have been predicted by reflectance spectroscopy successfully on subtropical and temperate soils, whereas soils from tropical agro-forest regions have received less attention, especially those from tropical rainforests. A spectral characterization provides a proficient pathway for soil characterization. The first step in this process is to develop a comprehensive VIS-NIR soil library of multiple key soil properties to be used in future soil surveys. This paper presents the first VIS-NIR soil library for a remote region in the Central Amazon. We evaluated the performance of VIS-NIR for the prediction of soil properties in the Central Amazon, Brazil. Soil properties measured and predicted were: pH, Ca, Mg, Al, H, H+Al, P, organic C (SOC), sum of bases, cation exchange capacity (CEC), percentage of base saturation (V), Al saturation (m), clay, sand, silt, silt/clay (S/C), and degree of flocculation. Soil samples were scanned in the laboratory in the VIS-NIR range (350-2500 nm), and forty-one pre-processing methods were tested to improve predictions. Clay content was predicted with the highest accuracy, followed by SOC. Sand, S/C, H, Al, H+Al, CEC, m and V predictions were reasonably good. The other soil properties were poorly predicted. Among the soil properties predic... Mostrar Tudo |
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Palavras-Chave: |
Carbono orgânico do solo; Pré-processamento espectral; Quimiometria; Solos tropicais. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/173558/1/2018-003.pdf
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Marc: |
LEADER 02749naa a2200229 a 4500
001 2088619
005 2021-11-10
008 2017 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3390/rs9040293$2DOI
100 1 $aPINHEIRO, E. F. M.
245 $aPrediction of soil physical and chemical properties by visible and near-infrared diffuse reflectance spectroscopy in the Central Amazon.$h[electronic resource]
260 $c2017
520 $aVisible and near-infrared diffuse reflectance spectroscopy (VIS-NIR) has shown levels of accuracy comparable to conventional laboratory methods for estimating soil properties. Soil chemical and physical properties have been predicted by reflectance spectroscopy successfully on subtropical and temperate soils, whereas soils from tropical agro-forest regions have received less attention, especially those from tropical rainforests. A spectral characterization provides a proficient pathway for soil characterization. The first step in this process is to develop a comprehensive VIS-NIR soil library of multiple key soil properties to be used in future soil surveys. This paper presents the first VIS-NIR soil library for a remote region in the Central Amazon. We evaluated the performance of VIS-NIR for the prediction of soil properties in the Central Amazon, Brazil. Soil properties measured and predicted were: pH, Ca, Mg, Al, H, H+Al, P, organic C (SOC), sum of bases, cation exchange capacity (CEC), percentage of base saturation (V), Al saturation (m), clay, sand, silt, silt/clay (S/C), and degree of flocculation. Soil samples were scanned in the laboratory in the VIS-NIR range (350-2500 nm), and forty-one pre-processing methods were tested to improve predictions. Clay content was predicted with the highest accuracy, followed by SOC. Sand, S/C, H, Al, H+Al, CEC, m and V predictions were reasonably good. The other soil properties were poorly predicted. Among the soil properties predicted well, SOC is one of the critical soil indicators in the global carbon cycle. Besides the soil property of interest, the landscape position, soil order and depth influenced in the model performance. For silt content, pH and S/C, the model performed better in well-drained soils, whereas for SOC best predictions were obtained in poorly drained soils. The association of VIS-NIR spectral data to landforms, vegetation classes, and soil types demonstrate potential for soil characterization.
653 $aCarbono orgânico do solo
653 $aPré-processamento espectral
653 $aQuimiometria
653 $aSolos tropicais
700 1 $aCEDDIA, M. B.
700 1 $aCLINGENSMITH, C. M.
700 1 $aGRUNWALD, S.
700 1 $aVASQUES, G. de M.
773 $tRemote Sensing$gv. 9, n. 4, Apr. 2017.
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