Mineral nutrition of vegetables crops XV: studies on the mineral nutrition on two varieties of Sweet Pepper under field conditions

Abstract

Sweet pepper (Capsicum annum L.) varieties Avelar and Ikeda were cultivated under field conditions: Periodically, from 30 th day, plants were harvested and analysed for N, P, K, Ca, Mg and S. Data obtained allowed the following conclusions: a) the initial rate of growth of the sweet pepper during the first 75 days is rather slow. There is no significant growth difference between those varieties. b) - the uptake of macronutrients is small until the 75 days, increating with the fructifcation. There is no significant difference between the varieties, in the total of nutrients absorved. At the 75 days old a plant of var. Avelar absorbs, more than Ikeda plant: 14.7%N, 15.4%P 18.4%K, 16.4%Ca, 18.1%Mg and 21.8%S. c) - the amounts of elements in kg/ha, absorved by a population of 25,000 plants under the field conditions of these experiment, were: 40.9kg/N, 3.8kg/P, 68.6kg/K, 51.8kg/Ca, 6.7kg/Mg, 4.3kg/S.