PRODUÇÃO DE MUDAS DE ALFACE EM BANDEJAS COM DIFERENTES SUBSTRATOS

Abstract

Lettuce Lactuca sativa l. is considered the most consumed leafy vegetable in Brazil, being a crop of great food and economic importance. So there is a diversity of varieties. The most used method is the plastic tray system followed by transplanting to flowerbeds, which result in more vigorous and productive plants. A quality substrate must contain good physical, chemical and biological characteristics. In this sense, the present work aimed to evaluate the development of lettuce seedlings of the American cultivar, planted in trays, as a function of four different types of substrates and a control. The evaluated variables were: plant height (PH), number of leaves (NL), stem diameter (SD), root stability (RS) and root length (RL). T2 and T3 had better results, when it comes to plant height and number of leaves, while T5 had the least satisfactory result compared to the others in these areas.