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| Registros recuperados: 152 | |
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| DUKES, M.D.; Bjorneberg, David L.; KLOCKE, N.L. |
| This paper is an introduction to the Advances in Irrigation Special Collection in this issue of Transactions ASABE and the next issue of Applied Engineering in Agriculture of 14 papers selected from 88 papers and presentations at the ASABE 5th Decennial National Irrigation Symposium, December 2010, in Phoenix, Arizona. This symposium followed the objectives of the previous four decennial events to provide a forum to assess progress of research endeavors to advance the effectiveness of irrigation practices during the past 10 years, leading to further research priorities that respond to future challenges. The papers in this Collection address a wide range of topics grouped into broad categories: microirrigation, center pivot irrigation, crop water use for... |
| Tipo: Article |
Palavras-chave: Evapotranspiration. |
| Ano: 2012 |
URL: http://eprints.nwisrl.ars.usda.gov/1477/1/1442.pdf |
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| Barbosa,Marcela L.; Silva,Thieres G. F. da; Zolnier,Sérgio; Silva,Servulo M. S. e; Morais,José E. F. de; Assis,Mery C. de S.. |
| ABSTRACT This study aimed to understand the relationship of morphological characteristics and actual evapotranspiration of forage cactus clones with their productive capacity under different water regimes. The data used in this study were collected between the years 2012 and 2013, in Serra Talhada, State of Pernambuco. The clones Sertânia IPA - IPA, Miúda - MIU and Orelha de Elefante Mexicana - OEM were submitted to three irrigation depths (2.5, 5.0 and 7.5 mm) and three irrigation intervals (7, 14 and 28 days). Cladode and plant morphology, accumulated actual evapotranspiration and yield were obtained at the moment of harvest. Pearson’s correlation matrix was elaborated and, in the sequence, multicollinearity, canonical and path analysis were applied.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Evapotranspiration; Nopalea sp.; Opuntia sp.; Brazilian Semi-arid region. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000900600 |
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| GONDIM, R. S.; FUCK JÚNIOR, S. C. de F.; MAIA, A. de H. N.; EVANGELISTA, S. R. M.. |
| Os dados básicos para estimar a evapotranspiração de referência de Penman-Monteith FAO (EToPM) são: temperaturas máxima e mínima, pressão de vapor real ou atual, radiação líquida e velocidade do vento, muitas vezes indisponíveis por requererem estações meteorológicas específicas. O objetivo deste trabalho foi avaliar a adequação do método para estimar a EToPM, utilizando-se dados mínimos integrados a um Sistema de Informação Geográfica, na bacia do Rio Jaguaribe, CE. Foi utilizado o sistema integrado de modelagem regional PRECIS (Providing Regional Climates for Impacts Studies), versão 1.2, com as condições de contorno do Modelo Climático Global (HadAM3P), acoplado ao Modelo Climático Regional (HadRM3P), por meio da técnica dinâmica de redução de escala... |
| Tipo: Folhetos |
Palavras-chave: Método geoestatístico de krigagem; Regressão; Geographical information systems; Balanço Hídrico; Evapotranspiração; Sistema de Informação Geográfica; Evapotranspiration. |
| Ano: 2010 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/875289 |
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| SILVA, J. P. da; MEIRELES, E. J. L.; CAMARGO, M. B. P. de; PANTANO, A. P.; ROMANI, L. A. S.. |
| Este manual tem por objetivo apresentar, de forma rápida e prática, a ferramenta para cálculo o balanço hídrico pelo método de Thornthwaite e Mather (1955), otimizando seu uso e aquisição de resultados pelo público interessado, contribuindo, assim, para o planejamento e tomadas de decisão das atividades agropecuárias e de pesquisas. |
| Tipo: Folhetos |
Palavras-chave: Evapotranspiração potencial; Excedente hídrico; Balanço hídrico; Deficiência hídrica; Evapotranspiração; Water balance; Evapotranspiration; Drought. |
| Ano: 2016 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1065245 |
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| Ferreira,Lucas Borges; Cunha,Fernando França da; Duarte,Anunciene Barbosa; Sediyama,Gilberto Chohaku; Cecon,Paulo Roberto. |
| ABSTRACT The estimation of the reference evapotranspiration is an important factor for hydrological studies, design and management of irrigation systems, among others. The Penman Monteith equation presents high precision and accuracy in the estimation of this variable. However, its use becomes limited due to the large number of required meteorological data. In this context, the Hargreaves-Samani equation could be used as alternative, although, for a better performance a local calibration is required. Thus, the aim was to compare the calibration process of the Hargreaves-Samani equation by linear regression, by adjustment of the coefficients (A and B) and exponent (C) of the equation and by combinations of the two previous alternatives. Daily data from 6... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Evapotranspiration; Irrigation; Temperature; Agrometeorology. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000100104 |
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| Gondim,Rubens S.; Evangelista,Sílvio R. M.; Maia,Aline de H. N.; Duarte,Aryberg de S.. |
| ABSTRACT The aim of this study was to evaluate the impacts of climate change on irrigation water demand of melon plants grown in Jaguaribe-Apodi Irrigation District (DIJA), which is located between the states of Ceará and Rio Grande do Norte, in Northeastern Brazil. Future scenarios were developed using the Eta-CPTEC/HadCM3 climate change projections, after being submitted to downscaling method. We used a set of climate data from the same model for the period of 1961 through 1990, and further projections after bias correction. Local geographic coordinates were interpolated using GIS techniques. Reference evapotranspiration (ETo) was estimated from the monthly minimum and maximum mean temperatures, using a limited data method. The rainfall, temperature,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Evapotranspiration; GIS techniques; Irrigation; Cucumis melo L. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300591 |
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| Conceição,Marco Antônio Fonseca; Tonietto,Jorge; Souza,Reginaldo Teodoro de. |
| Abstract: The objective of this work was to evaluate the performance of vineyard water indices in different grape-growing regions. The climate data used come from the historical series of weather stations located in 18 countries. The evaluated indices were the following: dryness, Zuluaga, humidity, aridity, moisture, and the grapevine water index. The grapevine water index and the indices of drought, moisture, and aridity exhibit similar performances, which makes them suitable to be used equivalently in climatological studies of grapevine regions. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vitis vinifera; Climatology; Evapotranspiration; Viticulture. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000600765 |
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| Registros recuperados: 152 | |
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