Desempenho de cultivares de alface americana em sistema convencional e hidropônico no Médio Norte do Mato Grosso

Abstract

Lettuce (Lactuca sativa L.) is one of the most consumed leafy vegetables in the world. As it is a species of milder climates, several studies have been developing varieties that are more resistant to high temperatures and in different environments and systems, to meet the demand for this vegetable crop. Thus, we sought to evaluate the performance of 4 iceberg lettuce cultivars in two production systems (conventional and hydroponic). The experimental design was a DBC in a 4x2 factorial scheme with 4 replications for each treatment. Data were submitted to analysis of variance (ANOVA) and means compared by Tukey's test with p< (0.05). Air, root and total fresh mass, dry weight of leaves, stems, roots and total, stem and head diameter and stem length were evaluated. For the variable aerial fresh mass, total fresh mass and root fresh mass, there was a significant interaction only between systems, where the soil system presented an increment of 29% under the hydroponic system for aerial and total fresh mass, since the fresh mass of root the soil system was superior with a 23% more significant biomass. It was concluded that systems were significant for the performance of cultivars, with the traditional system having the best performance.