The objective of this study was to evaluate the growth and yield of sweet pepper under the influence of irrigation levels and potassium doses. The experimental design consisted of a completely randomized 5 x 2 factorial scheme with four replications and five irrigation depths (80, 90, 100, 110 and 120% of ETc) and two levels of potassium (80 and 120 kg ha-1 of K2O), applied in succession according to the phenological phase, through a system of drip irrigation with self-compensated emitters, installed in a set of 40 drainage lysimeters cultivated with sweet pepper (hybrid Maximos F1), located at campus of the Federal Rural University of Pernambuco (UFRPE), Recife, PE. The crop cycle lasted 142 days; measurements were made for height, diameter and production variables and leaf area index estimated at the end of the cycle. The variables of growth and yield were influenced by the irrigation depths and potassium doses. When the lowest dose was fixed, the estimate of more fruits per plant, fruit weight and yield occurred with the use of irrigation depth of maximum efficiency equivalent to 96, 120 and 102% ETc, respectively.
Capsicum annuum; phenological cycle; drainage lysimeters
