Desempenho inicial de mudas de alface e couve submetidas a aplicação de organominerais

Abstract

The objective of this study was to evaluate the feasibility of using organomineral fertilizers in the cultivation of lettuce (Lactuca sativa) and common kale (Brassica oleracea var. acephala) seedlings. To this end, two experiments were conducted. In the first experiment, the use of two commercial products during the germination and initial development of smooth lettuce variety 'Repolhuda Todo Ano' was evaluated. The experimental design was a 5x2 factorial scheme, with five concentrations (0, 2, 4, 6, and 8 mL/L) and two commercial products, identified as A and B. Seed germination was evaluated at 4 and 10 days after sowing, and seedlings were evaluated 30 days after sowing, considering the following parameters: fresh mass of the aerial part, fresh mass of the roots, number of leaves, length of the aerial part, length of the roots, dry mass of the aerial part, and dry mass of the roots. The second experiment was conducted similarly, using seeds of the kale variety 'Manteiga da Geórgia'. It was concluded that, under the conditions of the experiment, commercial product A was beneficial for the germination of lettuce seeds 'Repolhuda Todo Ano' at a concentration of 4 mL/L. For seedling development, the use of 2 mL/L is recommended. For kale 'Manteiga da Geórgia', the use of commercial products did not enhance germination. For seedling development, the use of product A at a concentration of 2 mL/L is recommended.