Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/30972
Title: Greenhouse crisphead lettuce grown with mulching and under different soil water tensions
Other Titles: Produção de alface-americana em cultivo protegido utilizando mulching, sob diferentes tensões de água no solo
Keywords: Lactuca sativa
Irrigation management
Protected environment
Soil covering
Manejo da irrigação
Ambiente protegido
Cobertura do solo
Issue Date: 2016
Publisher: Associação Brasileira de Engenharia Agrícola
Citation: GEISENHOFF, L. O. et al. Greenhouse crisphead lettuce grown with mulching and under different soil water tensions. Engenharia Agrícola, Jaboticabal, v. 36, n. 1, 2016.
Abstract: Proper irrigation management is important both to enable adequate water supply and to minimize problems with diseases, nutrient leaching and unnecessary water and power wastes. Thus, this study aimed at improving irrigation management in greenhouses. For that reason, we assessed the effect of various water tensions on yield performance of crisphead lettuce, Raider-Plus cv. , grown with mulching. The experiment was conducted in greenhouse at the Federal University of Lavras. Treatments constituted five different soil water tensions, namely 12, 25, 35, 45, and 70 kPa. The results showed that irrigation must be carried out at water soil tension of around 12 kPa to reach satisfying commercial values for both total and commercial yield, 66 and 50 t ha-1, as well as keeping good vegetable quality. At this tension, total water consumption was of 167.25 mm. The water use efficiency demonstrated quadratic response to treatments, with high water consumption efficiency found in intermediate treatments (35 and 45 kPa), achieving values of 579.87 and 471.71 kg ha -1mm-1, respectively.
URI: http://repositorio.ufla.br/jspui/handle/1/30972
Appears in Collections:DEG - Artigos publicados em periódicos



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