DESEMPENHO AGRONÔMICO DE HÍBRIDOS DE TOMATE (Solanum lycopersicum L.) SOB NÍVEIS DE REPOSIÇÃO HÍDRICA

Abstract

The rational management of water, beside the cultivation in a protected environment, guarantees stability and quality of production, increased productivity and full demand. Thus, the present study aimed to evaluate the development and productivity characteristics of two tomato hybrids cultivated in protected environment, submitted to four levels of water replacement, applied via drip irrigation. The experiment was conducted in a greenhouse in the experimental area of the Instituto Goiano Federal - Campus Ceres, from December 2017 to May 2018. A randomized complete block design was used, with four replications, in subdivided plots, in the scheme 2 x 4, the plots being composed of two tomato hybrids (Dominator and Tyson) and the four subplots of water replenishment: 60, 80, 100 and 120% of ETc. The growth characteristics, plant height (AP), stem diameter (DC) and fruit mass (MF), fruit equatorial diameter (SD), fruit longitudinal diameter (DL), number of fruits per plant (NFP), productivity per plant (PRODP), total productivity (PRODT), commercial productivity (PRODC) and percentage of losses (PERDAS) were evaluated. The results of the development and productivity characteristics were submitted to analysis of variance (Test F), at the level of significance of 5% and, for the characteristics that presented significance, a regression was made to blades, with Tukey at 5% significance for the hybrids. The analyzed variables did not show interaction between the treatments. The hybrids differed statistically among the productive characteristics studied. The Tyson hybrid presented greater adaptability to the study conditions. Water replacement levels did not interfere in productivity