INFLUÊNCIA DO AMBIENTE PROTEGIDO NO CULTIVO DA ALFACE EM ADUBAÇÃO ORGÂNICA E CONVENCIONAL

Abstract

The consumption of vegetables in Brazil increases year after year, with a greater emphasis on leafy vegetables. Thus, the climatic aspects are amongst the factors that most interfere in their production, as well as alterations in the physiology of the plant. Therefore, the objective of the present work was to evaluate the effect of different types of protected environments in response to mineral and organic fertilization on the production of crisp lettuce. The experimental design was entirely randomized design (DIC), constituted of a factorial 3 x 2 x 5, where the treatments were T1: Growing in an environment with a black shade cloth (50%); T2: Growing in the field and T3: Growing in a tunnel environment with a 125 micron polyethylene cover, and in the plots two types of fertilization, mineral and organic, and five repetitions. The plant parameters evaluated were: fresh and dry mass of the aerial part, stem and root, plant height, stem diameter, root volume, number of leaves, foliar macronutrient content and productivity. It can be concluded that the best results were obtained in the tunnel growing environment with a 100 micron polyethylene cover combined with organic fertilization.