Análise produtiva de pimenta biquinho sob irrigação e adubação nitrogenada

Abstract

Nowadays, pepper is cultivated in all Brazilian regions, being destined for various purposes, both in natura and processed. The objective of this work was to study water depths and nitrogen levels in the soil under drip irrigation. The pepper of Capsicum genus has a great acceptance in the market, being a good alternative for small producers, since it does not need large areas for its cultivation. The experiment was carried out in the experimental field of the Federal University of Mato Grosso, Campus Rondonópolis, in a dystrophic Oxisol. The experimental design used was the randomized blocks with subdivided plots. The plots consisted of 5 irrigation slides (40%, 60%, 80%, 100% and 120% of crop evapotranspiration (ETc)) and the subplots consisted of 5 nitrogen doses (0, 60, 120, 180 and 240 kg ha-1), in a 5x5 factorial arrangement, with 4 replications, totaling 100 experimental units. The variables analyzed are indicators of the productivity of bonnet pepper, that being: diameter and length of fruits, mass of the first 10 mature fruits, soluble solids content (°Brix), total fresh mass of mature fruits, number of mature fruits and total productivity. Statistical significance was obtained for nitrogen doses in the evaluations of total fresh mass of mature fruits, number of mature fruits and total productivity. However, the evaluations of fruit diameter and length, mass of the first 10 mature fruits and soluble solids content (°Brix) were not significant for water slides and nitrogen doses. For the total fresh fruit mass and total productivity, the nitrogen dose that provided the highest yield was 190 kg ha-1. For the number of ripe fruits the ideal nitrogen dose was 139.13 kg ha-1.