Avaliações biométricas e bioquímicas de Curauá (Ananas comosus var. erectifolius (L. B. Sm) Coppens & Leal em sistema agroflorestal e plantio convencional no Município de Aurora do Pará.

Abstract

The curavá (Ananas erectifolius L. B. Sm) is an important species in the Amazon region producing fiber, being widely used in forest plantations to increase the profitability of industries that operate in reforestation and using the species as short term financial support for their investments, because it is a plant of rapid growth. Despite the importance of this species, both in the automotive industry, the petrochemical industry and in the manufacture of ropes, there are few studies related to factors that can interfere with your productivity as: cropping systems that could be conducive to the species; interference biochemical activities production in pure and mixed, and drought, as well as chlorophyll that would affect the quality of the fiber, Tn possession of these events and considering the implementation of a cropping system that would provide more adequate production plant was the company Tramontina group in partnership with the Federal Rural University of Amazonia created this project to quantify the yield curauá in pure and intercropped with paricá (Schizolobium parahyba) var. Amazonicum (Huber ex. Ducke) Barnepy, through the study of production variables (growth / dry), biochemistry, chlorophyll . Statistical analysis will be used and the regression sum of means by Tukey test at Assistat 7.6 Beta Software, in studies of 15 plots of 0.80 x 0, 80cm (pure planting and intercropping with paricá).

The aim of this work was to describe the behavior of plants curauá Ánanas comosus var. erectifolius (L. B. Sm) grown for three years on the Farm Tramontina, the city of Aurora do Pará, Pará state, the systems in full sun and shaded paricá (Schizolobium parahyba) var. Amazonicum (Huber ex. Ducke) Barnepy. We conducted a joint assessment of vegetative traits, biometrics and productivity with the help of the Tukey test and analysis of variance. Two treatments were arranged in randomized complete block design, with 15 replications were evaluated in farming systems in full sun and shaded with curauá var. Purple. After three years, the collections were made of soil and evaluated variables such as height, number of leaves, number of shoots, leaf thickness, leaf area, wet weight, dry weight and relative wet weight and dry weight. The analysis of variance and the Tukey test efficiently specify the variables in cropping systems in full sun and shade. The shading gives the highest values of height, number of leaves and leaf area, but it has fewer shoots, dry weight was higher full shade considering the most appropriate treatment.

This study aimed to evaluate the biochemical plant curauá Ananas comosus var, erectifolius (L. B. Sm) grown for three vears at the Farm Tramontina, the city of Aurora do Pará, Pará state, cultivated with shaded paricá (Schizolobium parahyba) var. Amazonicum (Huber ex. Ducke) Barnepy in agroforestry and full sun. The experimental design was completely randomized experimental units with 15 replications where the biochemical variables were evaluated: sucrose, total soluble protein, starch, ammonia, nitrate, total soluble carbohydrate, glutamine synthetase and photosynthetic pigment chlorophyll a, b, a / b (total) and carotenes that have influenced the growth and yield of plants curauá, making a total of 30 experimental units shaded and unshaded. Anaiysis of variance was applied to the data coliected and the means were compared by Tukey test at 5% significance level. Organic compounds studied all showed higher concentrations and enzymatic activities (glutamine synthetase), plants curauá shaded. Among the pigments were for the plants in the shade, increasing total chlorophyll a and chlorophyll, whereas in the sun plants were found at higher levels in chlorophyll b carotenoids. Curauá, even in the dry season, showed good results in terms of productivity in agroforestry systems (shading) rather than pure stands (in full sun).