Nutrient content in lettuce with application of increasing doses of nitrogen in four cultivars
DOI:
https://doi.org/10.36560/14420211263Keywords:
Lactuca sativa, ureia, folhas de alface.Abstract
Lettuce has nitrogen as a limiting nutrient for its growth and development, the proper management of this element results in increased productivity, greater mass and higher content of macronutrients and chlorophyll in the leaves. This work aimed to evaluate the effect of different doses of nitrogen on the concentration of nutrients in the leaves of four lettuce cultivars. The experiment was carried out in a greenhouse, the cultivars used were purple, smooth, curly and mimosa. The design was randomized with five replications, five doses of nitrogen: 0, 50, 100, 150 and 250 kg ha-1, applied in the form of urea. Before the crop was rated the relative chlorophyll content and then harvest the fresh weight, dry weight and nutrient content. Nitrogen had interaction with all evaluated parameters, and the mimosa cultivar was the most responsive and showed an increase in nitrogen content with the increase of applied doses
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