Effect of bench slope on lettuce production

Abstract

In recent years, besides planting in beds, lettuce has been widely cultivated in hydroponic systems. In this system as plants are nourished by a nutrient solution in a closed circuit, so that correct nutrition of the plants is necessary for the solution of the solution. Therefore, it is necessary a certain declination in the benches, in turn, influencing the speed of a nutrient solution by the root system. As there is little research on the ideal slope for benches, this work had the objective of evaluating the effect of bench slope on an American lettuce production (Cultivar Gloriosa). 4 stars: four percent; 4%; 5% and 6%, in a completely randomized design with 6 replicates and 10 plants per plot. Fresh shoot mass and root mass were evaluated. The analysis of Variance and Scott-Knott's test was performed to compare the means. The results showed that the treatments with 4% and 5% presented the highest fresh mass of the aerial part and the others did not differ statistically, for root mass there was no significant difference between the treatments.