Curaua’s behavior inside different photosynthetically active radiation levels plant in cultivation conditions

Abstract

County and had as aim the evaluation of the behavior of different Photosynthetically Active Radiation Levels (PAR) curaua’s plant (Ananas erectifolius L.B.Smith) under cultivation conditions. The experiment was carried out in the experimental site of the “Tramontina Belém S.A.” Company, in the municipality of Aurora do Pará (PA-Pará State- Brazil). The Experimental Design was thoroughly randomized with subdivided plots, with four treatments and four repetitions. The different light conditions of 71, 64, 53 and 100%. Every six months the number and length of leaves and also the number of “curauá” sprouts were measured over a total period of 36 months. The obtained data was analyzed through an Analysis of Variance and SNK means’ test. The curauá presented distinct response patterns towards the analyzed parameters previously set, either in radiation levels or as to studied time. Curauá plants exposed to 53 and 64% of PAR showed better numbers in both length of leaves and quantity of curauá sprouts; and the cultivation under full sunlight favored a larger number of leaves. The fiber, leaf and mucilage production presented a progressive increase until the third year of the experiment period.