USO DE ENRAIZADOR PARA MAIOR TOLERÂNCIA DO TOMATEIRO DE MESA A DIFERENTES FREQUÊNCIAS DE IRRIGAÇÃO

Abstract

Faced with water scarcity for irrigation purposes, the irrigation in tomato plants with alternating irrigation shifts, associated with the use of fertilizers that induce rooting, can provide higher yields, with water savings. The present work aimed to evaluate the growth and production of tomato (Solanum Lycopersicum Mill.), cultivar BSDS0005, submitted to irrigation shifts and doses of the “Raizal®” rooter in a protected environment. The experiment was carried out in a greenhouse, at Instituto Federal Goiano – Campus Morrinhos (17º49'19''S, 49º12'11''W), from June to October 2021. The design was a randomized block with three replications, in a 3x5 split-plot scheme, with three irrigation shifts (1, 2 and 3 days) and five doses of Raizal® rooter (0, 5, 10, 15 and 20 g plant-1). Pots of 14.5 L of soil were used. A drip irrigation system was used, with self-compensating emitters, supplying water to two plants, in double lines. Irrigation was managed according to evapotranspiration in weighing lysimeters. The results obtained prove that, for the table tomato production, cultivar BSDS0005, the Raizal® rooter was efficient at the dose of 10 g plant-1, showing good performance in the flower abortion rate (%) and productivity (t ha-1). The irrigation every two days provided better performance in the vegetative parameters, in the root dry mass (g root-1), in the flower abortion rate (%), productivity (t ha-1) and better efficiency in the water use.