EFICIÊNCIA DO USO DA ÁGUA E COEFICIENTE DE CULTIVO PARA LISIANTHUS DE CORTE CULTIVADO EM AMBIENTE PROTEGIDO

Abstract

Lisianthus is considered one of the most economically important species in the national and international market. However, to achieve the quality demanded by the market, efficient water management during the production period is necessary. One of the alternatives capable of optimizing water use efficiency is the addition of hydrogel to the substrate, associated with irrigation. In this sense, the objective of this work was to determine the cultural coefficients of cutting lisianthus and to evaluate the efficiency of water use under the combined effect of different irrigation management and hydrogel doses in a protected environment in two growing seasons. The design adopted was completely randomized, with a 5x4 factorial distribution, with five irrigation depths, namely: 40, 60, 80, 100 and 120% of the pot's holding capacity, and four doses of hydrogel (0, 3, 6 and 9 grams per pot). Four replicates were used for each treatment, totaling 80 pots. In conclusion, fresh weight, water consumption and water use efficiency were significantly affected by the interaction between irrigation depths and hydrogel doses in the two growing seasons. However, irrigation depths around 80% to 100% of the CRV are more suitable for providing satisfactory results with less water volume, generating savings.