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| Keffer,Josiane F.; Silva,Cátia C. da; Souza,Adilson P. de; Silva,Andréa C. da; Bouvié,Luana; Dias,Thaíse K. R.. |
| ABSTRACT The scarcity of information on the agroclimatic and ecophysiological requirements of forest species, especially in the initial phase, limits the production of quality seedlings, the planning and optimization of nurseries. The potential evapotranspiration, crop coefficients (kc) and water sensitivity coefficients (ky) of Amazonian yellow ipe seedlings were determined under different shading conditions and levels of water replacement to the substrate, in the dry period (July to October 2016), in the Cerrado-Amazon Rainforest transition region of the Mato Grosso state, Brazil. The experiment evaluated the full sun and black polyester nets with 35, 50, 65 and 80% shading, and the levels of water replacement to the substrate of 25, 50, 75 and 100% ETc... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Handroanthus serratifolius; Crop coefficients; Water deficit; Irrigation management. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001000733 |
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| Martim,Charles C.; Silva,Suzana G. da; Ferneda,Brena G.; Souza,Adilson P. de; Silva,Andréa C. da; Pizzatto,Mariana. |
| ABSTRACT Aiming to support projects and managements of irrigation for vegetables in the Mid-North region of Mato Grosso state, Brazil, this paper determined crop evapotranspiration (ETc), crop coefficients (Kc) and water response function of summer squash (Curcubita pepo) cv. ‘Italiana’ under different cultivation conditions. The plantations were conducted in the dry season of the region (July to October 2016), using 2.5 kg m-2 of millet straw (grass) and crotalaria straw (legume) and bare soil. ETc was obtained by soil water balance through tensiometry, whereas Kc values were given by the ratio between ETc and the reference evapotranspiration (ETo) obtained by the FAO-56 Penman-Monteith method. For the water response function, the rates of 40, 60, 80, 100... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crop coefficients; Mulching; Irrigation management. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000900640 |
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| Borges,Valéria Peixoto; Silva,Bernardo Barbosa da; Espínola Sobrinho,José; Ferreira,Rafael da Costa; Oliveira,Alexsandra Duarte de; Medeiros,José Francismar de. |
| Melon plants (Cucumis melo L.) are grown in the state of Rio Grande do Norte (RN), the largest producer of melons in Brazil, with plastic mulch and agrotextiles. Studies of crop evapotranspiration (ET) under these conditions are required to ensure adequate irrigation. This study aimed to determine the crop coefficients (Kc) of irrigated melon plants grown with mulch and agrotextiles in the region of Mossoró, RN, based on the Bowen Ratio Energy Balance (BREB) method. Two experiments were conducted at different times during the 2009/2010 season in a melon producing area (4°59'52" S, 37°23'09" W, and 54 m elevation) to define ET and Kc. Due to the plastic cover and reduced precipitation during the experiments, the Kc obtained by the BREB method was considered... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucumis melo (L.); Bowen Ratio; Crop coefficients. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162015000500385 |
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