SciELO - Scientific Electronic Library Online

 
vol.38 issue3Cultivar, seeding rate and nitrogen side-dress fertilization influence in integrated production of rice and fishParaneoplastic neuropathy associated with canine mast cell tumor author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Ciência Rural

On-line version ISSN 1678-4596

Abstract

LUZ, Gean Lopes da et al. Consumption of electric energy and production of hydroponic lettuce under three irrigation intervals. Cienc. Rural [online]. 2008, vol.38, n.3, pp. 815-818. ISSN 1678-4596.  http://dx.doi.org/10.1590/S0103-84782008000300036.

The objective of this study was to evaluate irrigation intervals on the production of lettuce, cv. Regina, in an NFT hydroponic system. An experiment was carried out at the Crop Science Department, Federal University of Santa Maria, from May to June 2005. Treatments were three irrigation intervals (15min, 30min, and 45min) after a 15 minutes irrigation. The experimental design was a complete randomized block design with three replications. Leaf area, and above ground and total dry matter were measured at transplanting, and at 6, 9, 16, 20 and 23 days after transplanting. The treatment 45 minutes interval between successive irrigations allowed a 42,1% saving electric energy without decreasing lettuce yeld.

Keywords : Lactuca sativa L.; yield; growth variables; electric energy.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License