Características da alface em função de diferentes cores de agrotêxtil e cobertura do solo.

Abstract

One of the biggest bottlenecks found by leafy vegetable growers in the semi-arid region is the climatic factors, such as temperature and excessive luminosity, so that lettuce culture does not develop efficiently, so it is necessary to create alternatives capable of plants. Thus, an experiment was conducted in an experimental area of the Federal University of Campina Grande, UFCG / CCTA in Center of Science and Agro-food Technology , from April to June 2017, with the objective of evaluating the growth and production of shaded lettuce with different colors of agrotêxtil and mulching in the soil and climatic conditions of the city of Pombal-PB. The experimental design was a randomized block with subdivided plots of type 5x2. The plot consisted of the agrotêxtil colors with a grammage of 15 g.m2 (lilac, white, green and yellow and open cultivation) and the subplot composed by the soil cover (with and without mulching). Plant height and diameter, root and stem length, stem diameter, number of leaves per plant, root dry mass, stem, leaf, shoot and total mass, fresh mass of shoot and productivity. The agrotêxtil of lilac and yellow color presented increases in the phytomass and lettuce production. For the mass partition characteristics in the plant, the lilac and yellow color screens stood out in relation to the others, thus presenting the best averages. For soil cover with mulching, it was observed that the plants that were cultivated in beds without the presence of mulching presented better means for the studied variables. Thus, it was observed that the plants were better developed with the aid of shading when compared to the control treatment (control) the cultivation in the open. The use of mulching as a soil cover under the study conditions decreased the growth and consequently the lettuce production.