Crescimento e produção do tomateiro tipo cereja sob diferentes taxas de reposição da evapotranspiração e tipos de adubação.

Abstract

The adequate management of irrigation depth and type of fertilizer are fundamental to the development of plants aimed at maximum growth and crop production. The objective is therefore to evaluate the growth and production of the tomato type irrigated cherry red with different replacement rates of evapotranspiration and types of fertilizer in a protected environment. The experiment was conducted from june to october 2014, in a greenhouse at the Federal University of Campina Grande. The experimental design was randomized blocks without factorial 5 x 3 with five repetitions. The factors studied consists of five rates of replacement of crop evapotranspiration (70; 85; 100; 115 and 130% of ETc) and three types of fertilization (soil without fertilization (control), fertilized with NPK and fertilized with worm humus). The volume of water to replenish the losses ETc was estimated with the assistance of a minitanque and the drip irrigation system, with self-compensating emitters. Were evaluated at 12, 24, 36, 48, 60, 72, 84, 96, 108 and 120 days after transplanting, variables growth and production the tomato cherry, whose data were submitted to analysis of variance (F test) and regression for quantitative factors and Tukey test for qualitative factors. The growth of tomato was influenced by different replacement rates of ETc and types of fertilization. Production variables were influenced by the types of fertilizer; have replacement rates only influenced the DLF. Irrigation with 130% of ETc resulted in increased growth and fitomass of tomato but the high rates reduced °Brix. Replacement of 97.09% of ETc favored DLF while the fertilizer with earthworm humus provided greater growth and production to tomato. The humus, associated with 100% of ETc resulted in higher absolute and relative growth rates. The highest abortion flowers was found in fertilization with humus, along with 98.34% of the ETC. The leaf area positively influenced the production of tomato fruit in the conditions studied, the interaction 70% of ETc with humus consists in the best recommendation for producers as it resulted in greater increases in the production of cherry tomato.