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| Carvalho, Daniel F. de; Silva, Dione G. da; Rocha, Hermes S. da; Almeida, Wilk S. de; Sousa, Eraldo da S.. |
| The aim of this study was to quantify the water consumption and the crop coefficients (Kc) for the potato (Solanum tuberosum L.), in Seropédica, Rio de Janeiro (RJ), Brazil, under organic management, and to simulate the crop evapotranspiration (ETc) using the Kc obtained in the field and the ones recommended by the Food and Agriculture Organization (FAO). The water consumption was obtained through soil water balance, using TDR probes installed at 0.15m and 0.30m deep. At the different stages of development, the Kc was determined by the ratio of ETc and reference evapotranspiration, obtained by Penman-Monteith FAO 56. The crop coefficients obtained were 0.35, 0.45, 1.29 and 0.63. The accumulated ETc obtained in the field was 109.6 mm, while the ETc... |
| Tipo: Journal paper |
Palavras-chave: Production systems; Farm economics; Farming Systems; Farm nutrient management; Root crops. |
| Ano: 2013 |
URL: http://orgprints.org/28510/1/Carvalho_evapotranspiration.pdf |
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| Andrade, Irineu P. de S; Carvalho, Daniel F. de; Almeida, Wilk S. de; Silva, Jonathas B. Gonçalves; Silva, Leonardo D. B. da. |
| This work aimed to study the effect of drip irrigation management on growth and yield of the 'Roxo de Valinhos' fig tree (Ficus carica L.), at three years old, and to determine crop coefficients (Kc) and its water requirement (ETc) under Baixada Fluminense climate and soil conditions, state of Rio de Janeiro, Brazil. The study was carried out in the experimental area of SIPA (Sistema Integrado de Produção Agroecológica) in Seropédica, Rio de Janeiro State, from July 2011 to May 2012. The experimental area was divided in two blocks, named B1 (sandy clay loam texture) and B2 (loamy sand texture). In each block, irrigation frequencies (IF) of two (T1) and four days (T2) were evaluated, as well as the irrigation absence (T3). Irrigation management and water... |
| Tipo: Journal paper |
Palavras-chave: Production systems; Irrigation and drainage. |
| Ano: 2014 |
URL: http://orgprints.org/28499/1/Andrade_water.pdf |
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