Efeito de diferentes doses de biofertilizante na produção de mudas de tomate

Abstract

Tomato (Solanum lycopersicum) is one of the most common crops in the world, being one of the main vegetable products, since its fruits are an important source of vitamins. The implantation of areas for the cultivation of table fruits, for the most part, is done by transplanting seedlings. Therefore, the production of seedlings is one of the most important stages of cultivation, as the productive performance of plants and the quality of the product destined for the consumer market depend on it. Therefore, a possible alternative is the use of fertilizers that can contribute to better seedling nutrition, and greater vigor. Thus, the objective was to evaluate the effect of different doses of biofertilizer Fert-I-Fish on the production of tomato seedlings. The tomato cultivars used are both belonging to the Santa Cruz group, being the Kada and Paulista varieties. The experimental design used was randomized blocks, in a 2 x 4 factorial scheme (cultivars and doses), and five replications, being: Control (0 ml.L-1), 1, 2 and 4 mL.L1. Two applications of the syrup were performed, 7 and 14 days after sowing, in which 5 ml of the syrup per cell were applied. The variables analyzed were: percentage of seedling emergence, height of seedlings, number of leaves and the length of roots of tomato seedlings in a period of 28 days. The results obtained were analyzed by means of analysis of variance, comparison of means by the Tukey test for the cultivar factor and regression analysis for the dose factor (p <0.05) with the SISVAR software. The cultivar Paulista with greater capacity for rapid seedling emergence, compared to the cultivar Kada. The number of leaves is favored with the application of doses of 2.05 mL.L-1 and 3.55 mL.L-1, at 21 DAS, for cultivars Kada and Paulista, respectively. As for the height of the plants, according to the doses of -better performance, at 21 DAS, they are: 2.87 mL.L-1 and 3.76 mL.L-1, for cultivars Kada and Paulista, respectively. At 28 DAS, the best performing doses are: 3.08 mL.L-1 and 5.34 mL.L-1, for cultivars Kada and Paulista, respectively. The doses of biofertilizer used do not influence the growth of roots of both cultivars, possibly due to the environment limited by cell size.