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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
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Data corrente: |
29/06/2000 |
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Data da última atualização: |
29/06/2000 |
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Autoria: |
SANTOS, A. C. V. dos. |
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Afiliação: |
EMATER-RIO. |
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Título: |
Efeitos nutricionais e fitossanitarios do biofertilizante liquido a nivel de campo. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Revista Brasileira de Fruticultura, v.13, n.4, p.275-279, out. 1991. |
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Volume: |
v.13 |
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Páginas: |
p.275-279 |
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Idioma: |
Português |
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Conteúdo: |
Os estudos realizados em Unidades de Observacao, sobre os efeitos nutricionais, fungicida e inseticida do biofertilizante liquido, aplicado via foliar e em diferentes concentracoes, demonstrou sua viabilidade de uso, a nivel de campo, com o aumento de producao, produtividade, tolerancia as doencas fungicas e o controle das principais pragas de cada lavoura frutifera, sem o uso de agrotoxicos. A partir dos bons resultados alcancados, o biofertilizante liquido vem sendo utilizado por produtores de frutiferas, com otimo resultado no controle fitossanitario e adubacao foliar, sendo que o produto pode ser obtido da fermentacao de esterco de bovinos e agua, em processo anaerobico (biodigestor) e praticamente a custo minimo, reduzindo-se assim, a mais de 80% os gastos com insumos na propriedade. |
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Palavras-Chave: |
Controle fitossanitario; Fruticulture; Nutricao de planta; Nutrition of plant; Plant healthy control. |
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Thesagro: |
Fruticultura. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01439naa a2200217 a 4500
001 1080452
005 2000-06-29
008 1991 bl --- 0-- u #d
100 1 $aSANTOS, A. C. V. dos
245 $aEfeitos nutricionais e fitossanitarios do biofertilizante liquido a nivel de campo.
260 $c1991
300 $ap.275-279 v.13
490 $vv.13
520 $aOs estudos realizados em Unidades de Observacao, sobre os efeitos nutricionais, fungicida e inseticida do biofertilizante liquido, aplicado via foliar e em diferentes concentracoes, demonstrou sua viabilidade de uso, a nivel de campo, com o aumento de producao, produtividade, tolerancia as doencas fungicas e o controle das principais pragas de cada lavoura frutifera, sem o uso de agrotoxicos. A partir dos bons resultados alcancados, o biofertilizante liquido vem sendo utilizado por produtores de frutiferas, com otimo resultado no controle fitossanitario e adubacao foliar, sendo que o produto pode ser obtido da fermentacao de esterco de bovinos e agua, em processo anaerobico (biodigestor) e praticamente a custo minimo, reduzindo-se assim, a mais de 80% os gastos com insumos na propriedade.
650 $aFruticultura
653 $aControle fitossanitario
653 $aFruticulture
653 $aNutricao de planta
653 $aNutrition of plant
653 $aPlant healthy control
773 $tRevista Brasileira de Fruticultura$gv.13, n.4, p.275-279, out. 1991.
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Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agricultura Digital. Para informações adicionais entre em contato com cnptia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
23/09/2020 |
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Data da última atualização: |
12/11/2020 |
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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: |
LÓPEZ-NORONHA, R.; SOUZA, Z. M. de; SOARES, M. D. R.; CAMPOS, M. C. C.; FARHATE, C. V. V.; OLIVEIRA, S. R. de M. |
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Afiliação: |
RENATO LÓPEZ-NORONHA, Feagri/Unicamp; ZIGOMAR MENEZES DE SOUZA, Feagri/Unicamp; MARCELO DAYRON RODRIGUES SOARES, Univ. of Amazonas; MILTON CÉSAR COSTA CAMPOS, Univ. of Amazonas; CAMILA VIANA VIEIRA FARHATE, Feagri/Unicamp; STANLEY ROBSON DE MEDEIROS OLIVEIRA, CNPTIA, Feagri/Unicamp. |
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Título: |
Soil carbon stock in archaeological black earth under different land use systems in the Brazilian Amazon. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Agronomy Journal, v. 112, n. 5, p. 4437-4450, Sept./Oct. 2020. |
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DOI: |
https://doi.org/10.1002/agj2.20345 |
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Idioma: |
Inglês |
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Conteúdo: |
In the Amazon, there are soils associated with continued human occupation known as "archeological black earth" (ABE). Due to its physical and chemical properties, ABE is more productive than other typical soils in the same region. Therefore, its carbon (C) sequestration mechanism has been a major topic of discussion by the scientific community, aiming to replicate similar characteristics in other soils. Thus, the objective of this study was to develop a predictive model using feature selection and decision tree induction methods for predicting soil C stock in ABE under different land use scenarios. The experiment was carried out in agricultural (coffee, cacao, and beans), pasture, and forest areas. Four feature selection approaches were used to identify the most relevant variables for the proposed model: (i) correlation-based feature selection, (ii) the x test, (iii) the Wrapper method, and (iv) no feature selection. The decision tree induction technique available in the Weka software was selected for data classification. Soils under cacao and coffee cultivation tend to accumulate more C when compared with soils located at bean crops, pasture, or forest land use systems. Land use and sand content were among the most important variables for the prediction of soil C stock in ABE. Furthermore, the use of a decision tree was effective at predicting soil C stocks for these soils because it enables the creation of models with high accuracy rates of 83, 74, and 81% (using seven, seven, and four rules at depths of 0.00-0.05, 0.05-0.10, and 0.10-0.20 m, respectively). MenosIn the Amazon, there are soils associated with continued human occupation known as "archeological black earth" (ABE). Due to its physical and chemical properties, ABE is more productive than other typical soils in the same region. Therefore, its carbon (C) sequestration mechanism has been a major topic of discussion by the scientific community, aiming to replicate similar characteristics in other soils. Thus, the objective of this study was to develop a predictive model using feature selection and decision tree induction methods for predicting soil C stock in ABE under different land use scenarios. The experiment was carried out in agricultural (coffee, cacao, and beans), pasture, and forest areas. Four feature selection approaches were used to identify the most relevant variables for the proposed model: (i) correlation-based feature selection, (ii) the x test, (iii) the Wrapper method, and (iv) no feature selection. The decision tree induction technique available in the Weka software was selected for data classification. Soils under cacao and coffee cultivation tend to accumulate more C when compared with soils located at bean crops, pasture, or forest land use systems. Land use and sand content were among the most important variables for the prediction of soil C stock in ABE. Furthermore, the use of a decision tree was effective at predicting soil C stocks for these soils because it enables the creation of models with high accuracy rates of 83, 74, and 81% (using seven, se... Mostrar Tudo |
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Palavras-Chave: |
Carbon stock; Classificação de solo; Estoque de carbono; Modelo preditivo. |
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Thesaurus NAL: |
Soil classification. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02403naa a2200253 a 4500
001 2125072
005 2020-11-12
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1002/agj2.20345$2DOI
100 1 $aLÓPEZ-NORONHA, R.
245 $aSoil carbon stock in archaeological black earth under different land use systems in the Brazilian Amazon.$h[electronic resource]
260 $c2020
520 $aIn the Amazon, there are soils associated with continued human occupation known as "archeological black earth" (ABE). Due to its physical and chemical properties, ABE is more productive than other typical soils in the same region. Therefore, its carbon (C) sequestration mechanism has been a major topic of discussion by the scientific community, aiming to replicate similar characteristics in other soils. Thus, the objective of this study was to develop a predictive model using feature selection and decision tree induction methods for predicting soil C stock in ABE under different land use scenarios. The experiment was carried out in agricultural (coffee, cacao, and beans), pasture, and forest areas. Four feature selection approaches were used to identify the most relevant variables for the proposed model: (i) correlation-based feature selection, (ii) the x test, (iii) the Wrapper method, and (iv) no feature selection. The decision tree induction technique available in the Weka software was selected for data classification. Soils under cacao and coffee cultivation tend to accumulate more C when compared with soils located at bean crops, pasture, or forest land use systems. Land use and sand content were among the most important variables for the prediction of soil C stock in ABE. Furthermore, the use of a decision tree was effective at predicting soil C stocks for these soils because it enables the creation of models with high accuracy rates of 83, 74, and 81% (using seven, seven, and four rules at depths of 0.00-0.05, 0.05-0.10, and 0.10-0.20 m, respectively).
650 $aSoil classification
653 $aCarbon stock
653 $aClassificação de solo
653 $aEstoque de carbono
653 $aModelo preditivo
700 1 $aSOUZA, Z. M. de
700 1 $aSOARES, M. D. R.
700 1 $aCAMPOS, M. C. C.
700 1 $aFARHATE, C. V. V.
700 1 $aOLIVEIRA, S. R. de M.
773 $tAgronomy Journal$gv. 112, n. 5, p. 4437-4450, Sept./Oct. 2020.
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