MANEJOS DE IRRIGAÇÃO ASSOCIADOS A DOSES DE HIDROGEL NA PRODUÇÃO DO TOMATEIRO DE MESA

Abstract

ABDALA, LÍVIA. Goiano Federal Institute - Campus Morrinhos, 2019 April. Irrigation managements associated with hydrogel doses in the tomato production for table. Advisor: Dr. César Antônio da Silva.

The tomato crop present high commercial value and is one of the most consumed vegetables worldwide. The growth and production of tomato depend on the water adequate supply at all stages of the crop, avoiding deficit or excess. Due to the water shortage, the hydrogel polymer has been researches object that aim to optimize the water use. Thus, the aim of this work was to evaluate the response of tomato plants under drip irrigation techniques associated with hydrogel doses. The experiment was carried out under greenhouse conditions at the Goiano Federal Institute, Campus Morrinhos. The experimental design was a randomized complete block with three replications, in 3x5 subdivided plots, with three irrigation managements (75%, 100% and 125% of crop evapotranspiration – ETc) and five hydrogel doses (0, 4, 8, 12 and 16 g pot-1). Each subplot was composed of six tomato plants cv. BRS Nagai, grown in pots. Biometric evaluations of the plants, gas exchange, yield and fruit quality were carried out, totaling six harvests. In Chapter I of this work, results on vegetative growth, evapotranspiration and gas exchange of tomato are presented, while in Chapter II, data on production and fruit quality are presented.

KEYWORDS: Lycopersicon esculentum Mill, soil moisture, evapotranspiration, fruit quality