Tensiometers
Mostrando 1-12 de 35 artigos, teses e dissertações.
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1. Leaf area estimation of cassava from linear dimensions
ABSTRACT The objective of this study was to determine predictor models of leaf area of cassava from linear leaf measurements. The experiment was carried out in greenhouse in the municipality of Botucatu, São Paulo state, Brazil. The stem cuttings with 5-7 nodes of the cultivar IAC 576-70 were planted in boxes filled with about 320 liters of soil, keeping so
An. Acad. Bras. Ciênc.. Publicado em: 14/08/2017
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2. CALIBRATION AND TESTING OF CS-CROPGRO MODEL FOR COMMON BEANS
ABSTRACT: Simulation models of crop growth enable estimating crop yield and water balance components with low cost and high precision. This study aimed to calibrate and evaluate the performance of the CS-CROPGRO model for common beans under the conditions of Jaboticabal city (SP), Brazil. The model was calibrated and tested with data previously collected fro
Eng. Agríc.. Publicado em: 2016-12
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3. Irrigation management influence and fertilizer doses with boron on productive performance of cauliflower
ABSTRACT In order to provide scientific information about the irrigated cauliflower production in Northeast of Para, an experiment was installed in the Federal Rural University of Amazonia farm with the Desert hybrid under different water tensions on the ground and boron doses in the municipality of Igarapé-Açu – PA. The experimental design was a randomi
Eng. Agríc.. Publicado em: 2016-10
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4. Manejo de irrigação do trigo para obtenção de máxima produtividade na região dos cerrados.
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Pesquisa Agropecuária Brasileira. Publicado em: 2011
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5. Condutividade hidráulica de um Latossolo Vermelho em pousio e cultivo intensivo.
O entendimento e a predição do fluxo de água no solo são essenciais ao manejo agrícola e ambiental. O objetivo deste trabalho foi determinar e comparar a condutividade hidráulica obtida com a técnica do perfil instantâneo no campo, em um solo mantido em pousio por seis anos e outro cultivado intensivamente por igual período. A técnica empregada par
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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6. Tensao de agua no solo: efeito sobre a produtividade e qualidade dos graos de cevada.
O objetivo deste trabalho foi estudar o efeito de tres niveis de tensao de agua no solo (187, 824 e 1.000 kPa), aplicados em tres fases do ciclo da cultura (fase I = emergencia ate inicio do perfilhamento, fase II = inicio do perfilhamento ate florescimento completo e fase III = florescimento completo ate graos em massa dura), sobre o desenvolvimento, o rend
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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7. Modelo Christiansen-Hargreaves ajustado para a estimativa da necessidade hídrica do feijão no Cerrado.
ABSTRACT: Bean crop producers from the Brazilian Cerrado region have only one technology adjusted for the irrigation management: which consist in the measurement of soil-water tension through the use of tensiometers. Although this methodology has high potential of use, it has not been widely adopted by the producers due to problems in instrumentation mainten
Planaltina. Publicado em: 2011
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8. Modelo Penman-FAO ajustado para a estimativa da necessidade hídrica do feijão no Cerrado.
ABSTRACT: Bean crop producers from the Brazilian Cerrado region have only one technology adjusted for irrigation management which consist in the measurement of soil-water tension through the use of tensiometers. Although this methodology has high potential of use, it has not been widely adopted by the producers due to problems in instrumentation maintenance.
Planaltina. Publicado em: 2011
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9. Manejo de irrigacao do trigo para obtencao de maxima produtividade na regiao dos cerrados.
O objetivo deste estudo foi testar o efeito de seis niveis de tensao de agua no solo (41, 51, 69, 185, 562, 993 kPa) medida a 10 cm de profundidade, no momento das irrigacoes, sobre o rendimento, seus componentes e a qualidade dos graos de trigo (cv. BR-12 Aruana). Os resultados indicaram um decrescimo do rendimento de graos com o aumento das tensoes de agua
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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10. Comportamento de estacas escavadas de pequeno diâmetro em solo laterítico e colapsível da região de Campinas/SP / Behavior of bored piles of small diameter in collapsible and lateritic soil in the region of Campinas/SP
This paper aims to study the behavior of bored piles of small diameters, subjected to axial compression loads by static load tests carried out at the Field of Experimental Soil Mechanics and Foundation 2 at Unicamp. The CEMSF2 has a geological profile whose first layer is composed of silty clay, with coluvionar, lateritic, and collapsible features.This study
Publicado em: 2011
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11. Integrated study of geological and geotechnical characteristics for aquifer recharge assessment: São Carlos-SP region / Estudo integrado das características geológico-geotécnicas com vista à avaliação de recarga de aquífero: região de São Carlos-SP
This thesis presents an integrated study of the geological and geotechnical characteristics of São Carlos region which influence the recharge process of the aquifer composed of sandstones of the Botucatu Formation. Among the assessed characteristics, it can be distinguished the parameters of ydraulic conductivity, retention of pollutants and pore distributi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/12/2010
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12. Componentes do balanço de água em um Cambissolo cultivado com meloeiro irrigado por gotejamento, com e sem cobertura da superfície / Water balance components in an Inceptsol cropped with muskmelon drip irrigated, with and without covered surface
The knowledge about the soil water balance is essential to soil-water-plant system management. Thus, this research aimed to study the water balance components in an Inceptsol cropped with muskmelon under drip irrigation, with and without surface covering, in the county of Baraúna, Rio Grande do Norte State, Brazil (05º0448 S, 37º3700 W). In an experimenta
Publicado em: 2010