Crescimento, fisiologia e produção do tomate cereja (lycopersicon esculentum var. cerasiforme) sob doses de potássio.

Abstract

The tomato is a vegetable most consumed by brazilians, the search to oconsume produtcs that preserve the environmental aspects, with absence of agrochemicals contributing to human health, becomes more and more common in the habit of the population, soon proper management of culture it ́s an opportunity of conservationist practices. Thereby the research was developed aiming evaluate the effect of doses of potassic fertilization in growth, physiology and production in cherry tomato cultivars, with experiment in open sky condictions at the Federal University of Campina Grande (UFCG), campus I, in the dependencies of the Agricultural Engineering Academic Unidt (UAEA). Used a completely randomized design with factorial scheme (2 x 5), with 5 repetitions, totalizing 50 experimental units, being represented two cherry tomato cultivars Carolina and Samambaia, associated with 5 potassium doses: D1 (0,8g by vessel corresponding 60 Kg há- 1), D2 (1,6g by vessel corresponding 20 Kg há-1), D3 (2,4g by vessel corresponding 180 Kg há-1), D4 (3,2g by vessel corresponding 240 Kg há-1) e D5 (4,0g by vessel corresponding 300 Kg há-1) . Were evaluated growth variables, physiological and production. Starting of the data obtained it was verified that the cultivar Samambaia got bigger amount of chlorophyll a, greater efficiency of water use (EUA) and production in relation the number of fruits, fresh weight and dry weight, compared to cv. Carolina.