PRODUÇÃO DE BERINJELA SOB IRRIGAÇÃO POR GOTEJAMENTO

Abstract

Eggplant is an oleraceous booming on the market in recent years, after scientific evidence to prove its phytotherapic potential. Eggplant cultivation in a protected drip irrigated environment is a viable tool for family farmers and small farmers, as it allows high economic yields in small areas. The experiment was conducted in an agricultural greenhouse in the experimental sector of the Goiano Federal Institute - Campus Ceres. The sowing was done in polystyrene trays of 128 cells and after establishment of the emergency were transplanted to plastic containers with capacity of 200 mL, containing 2/3 of commercial substrate and 1/3 of poultry litter. When the seedlings presented six definitive leaves, they were transplanted to polyethylene pots of 12 dm³. A randomized complete blocks designs were used in a 4x3 factorial scheme, with four irrigation blades (55%, 70%, 85% and 100% of crop evapotranspiration) and three eggplant genotypes (Milan F1 Mini hybrids, Listrada Zebrita Roxa and Napoli.). Drip irrigation system was used in this experiment. Irrigation management was done according to the class "A" tank method. The temperature (ºC) and the relative humidity of the air (%) were monitored daily with the aid of a digital thermos-hygrometer housed inside the greenhouse. Monitoring of ET0 (mm dia-1) was done by reading in class "A" tank. The variables analyzed were: plant height, stem diameter, number of leaves, leaf area, relative chlorophyll content, dry mass of aerial part and fruits, number of fruits, fruit diameter and yield. The genotype Napoli presented higher plant height, number of leaves and dry mass of aerial part. The genotype Milan F1 Mini showed higher number of fruits. The genotypes Milan F1 Mini and Listrada Zebrita Roxa presented the highest yields. The irrigation blade with the highest yield of eggplant was 100% of ETC. The genotypes Milan F1 Mini and Listrada Zebrita Roxa are recommended for cultivation and commercialization in the municipality of Ceres.