Produtividade inicial de tomate grape em sistema semihidropônico fertirrigado com diferentes adubações

Abstract

The tomato is a commercially important vegetable in Brazil, with good adaptability to climatic conditions. Grape tomatoes stand out for their color, flavor and versatility for both fresh and processed consumption. However, there is a need for alternatives to increase production, allowing it to advance in its productive scale, and the use of different fertilizers for this crop is an essential tool to increase the characteristics of the tomato and consequently influence productivity. In view of the above, the aim of this study was to evaluate the initial productivity of grape tomatoes grown in a protected environment in a semi-hydroponic system and fertilized with potassium chloride and without potassium chloride. The study was carried out in a protected environment (greenhouse), between February and June 2023, in the municipality of Cruz das Almas, BA. The experiment was conducted in a completely randomized design, with eight treatments and nine replications. Each experimental unit consisted of Grow Bags filled with a substrate containing coffee straw mixed with Carolina SoilⓇ. The treatments consisted of: fertilization with potassium chloride and without chloride, the use or not of a remineralizer and a probiotic product - yeast and Lactobacillus. Four harvests were carried out, assessing the soluble solids content by refractometry and evaluating the hybrid's agronomic performance by assessing the number of fruits per plant and the total weight of fruits per plant. Productivity was satisfactory for four harvests for both fertilizations. When the treatments were compared, there was no significant difference in the number of fruits; however, there was a significant difference between the fertilizations in terms of fruit weight and °Brix.