Produção hidropônica de alface em diferentes soluções nutritivas aplicadas em duas vazões.

Abstract

The experiment was conducated in greenhouse in the unit of research in irrigated agriculture of the State University of Maringá. The porpuse in this work went study the effect the different nutrient solutions apply in two outflow in the hidroponic yeld of the lettuce (Lactuca sativa L.), cultivated by the system NFT (Nutrient Film Technique). The treatments consist of three nutrients solutions with different concentrations (Solution 1=1,2dS.m-1, Solution 2=2,5dS.m-1 e Solution 3=0,8dS.m-1) combined with two outflow of application (Outflow 1=1,2 L.min-1 and Outflow 2=0,8 L.min-1 ) in the canals of cultivation.. So were compound the following treatments: S1V1 Nutrient solution 1 applicated in outflow 1, S1V2 Nutrient solution 1 applicated in outflow 2, S2V1 Nutrient solution 2 applicated in outflow 1, S2V2 - Nutrient solution 2 applicated in outflow 2, S3V1 - Nutrient solution 3 applicated in outflow 1, S3V2 - Nutrient solution 3 applicated in outflow 2. The analysis in results permit to conclude what the factories nutrient solution and outflow not show significant interation and that the largest values avaluated of biomass fresh and diameter of stem was obtained in treatment solution 1 (CE= 1,2 dS.m-1).