Utilização de bioativadores de solo na cultura do tomate

Abstract

The objective of this work was measure the potential usage of soil bioactivators in the supply of nutrients and productivity in the tomato crop on protected environment, compared with the mineral fertilization. The work was realized in harvest 2022/2023, with the tomato crop Italiano Plutão® graft on the rootstock TD1, in the city of Caxias do Sul - RS. The experimental delineation was in installments because of the specifics of treats, include 2 trats with 4 repetitions. Each repetition with 6 tomato plant, totalizing 24 treatment units. The treatments were composed for: tomato grown with 100 % mineral nutrition through fertirrigation with compost calcium nitrate, potassium sulfate, monoammonium phosphate, magnesium sulfate and micronutrients, and treat two, with use of soil bioactivators, that are, Biomax® Solum®, Magnum®, Karpum® and Frokum. Were evaluated in the experimente: leaf macro and micronutrient content, soil chemical parameters, number and average weigh of fruits, production per plant and productivity. The results obtained demonstrated that the treatment with mineral fertilizer acidified the soil, reduced calcium levels, increased manganese levels and higher nitrogen content in plants, providing higher crop productivity. Thereby, in the conditions teased, the use of bioactivators did not replace 100 % mineral fertilizer. [resumo fornecido pelo autor]