Abstract

CORDEIRO, I. Maria Castro-Coimbra et al. Growth of Schizolobium parahyba var. amazonicum cropping in presence of Ananas comosus var. erectifolius in para state, Brazil. Agrociencia [online]. 2016, vol.50, n.1, pp.79-88. ISSN 2521-9766.

The increase in environmental disturbance and global pressure to preserve the Amazon rainforest have encouraged the cultivation of native species. With the objective of evaluating the growth of Schizolobium parahyba var. amazonicum (Huber ex Ducke) barneby cultivated in the presence of agricultural components such as Ananas comosus var. erectifolius, we conducted this study in the Experimental Station of the company Tramontina Belem S.A., located in the City of Aurora do Pará (PA), Brazil. The experimental design was a factorial randomized complete blocks with plots split over time, so that the arrangements comprising the treatments of the plots and subplots were the observation time with six treatments and four repetitions: 1) S. parahyba var. amazonicum, Switenia macrophylla and Cordia goeldiana: GLC; 2) S. parahyba var. amazonicum, C. goeldiana, S. macrophylla and A. comosus var. erectifolius: GLCc; 3) S. parahyba var. amazonicum and C. goeldiana: GL; 4) S. parahyba var. amazonicum, C. goeldiana and A.comosus var. erectifolius: GLCc; 5) S. parahyba var. amazonicum: G; and 6) S.parahyba var. amazonicum and A. comosus var. erectifolius: Gc. The distance between forest species was 4 x 3 m and for plants of A. comosus 0.80 m x 0.50 m. The plot size was 18 x 24 m with four replicates per treatment, with a total of 24 plots and an experimental area of 10,368 m2. The variables analyzed to infer the growth of the forest component were height (H) and diameter at breast height (DBH), every 6 months for 3 years. In the six cropping systems the semiannual growth rate of height and DAP of S. parahyba var. amazonicum was higher in the first two years, and continued with a slow and steady trend of growth during the 36 months of the study. We observed a positive effect of the presence of A. comosus var. erectifolius in the growth of S. parahyba var.amazonicum plants.

Keywords : Amazon; agroforestry; monocultures and degraded áreas.