Cultivo de pimenta-malagueta em ambiente protegido com diferentes fontes de nitrogênio

Abstract

Nitrogen fertilization is an essential factor for the development of crops, providing increased production and quality of plants. Chili pepper is one of the most consumed spices in the world due to its spicy flavor, and can be used in natura in dishes, preserves or sauces. However, to date, there are few studies on nutritional management in the cultivation of chili pepper in a protected environment in the West of Santa Catarina. Thus, the objective of this work was to evaluate the effect of nitrogen fertilization on chili pepper plants grown in pots in a protected environment. The experiment was carried out in a greenhouse in the experimental area of the Federal University of the Southern Border, Chapecó Campus, located in the municipality of Chapecó-SC. The experimental design was in completely randomized blocks (DBC), with four treatments and five replications. The treatments were: T0 – Control (without fertilization); T1- controlled release fertilizer (14-14-14); T2- chemical fertilizer: Ammonium sulfate and T3- chemical fertilizer: Urea. Pepper seeds of the cultivar chilli (Capsicum frutescens) and 6-liter pots with commercial substrate of the brand Turfa Fertil were used. Seedling production occurred from August to September 2022 and pot cultivation from September 2022 to February 2023. The following variables were analyzed: plant height (cm); leaf area (cm 2 ); average fruit weight (g); total fruit weight per plant (g); number of fruits per plant, fruit length (cm) and total yield (g). The results obtained were submitted to analysis of variance and comparison of means by Tukey's test (p<0.05) in the Sisvar program. The highest productivity of chili pepper fruits was obtained with the use of your and ia as a source of N, then the control and ammonium sulfate, the lowest value obtained was with the use of controlled release fertilizer.