SOIL MORPHOLOGICAL CHARACTERIZATION OF HOMEGARDENS, SECONDARY FOREST AND A GROWING PASSION FRUIT (Passiflora edulis), IN SETTLEMENT JOY, SOUTHEAST PARÁ

Abstract

ABSTRACT: The study of soils is of utmost importance, and the morphological characterization of such an important allowance for understanding the application of technologies for agricultural production. Thus, we sought, through the characterization of soils of three ecosystems, explain the differences and similarities in the three different soil profiles, and seek to relate the characteristics of the various land uses, always seeking to understand the origin of soil fertility. The survey was conducted in november 2012, the settlement project Alegria, located in the municipality of Maraba in Southeastern Pará were opened three profiles on the ground, one in agroecosystems, the cultivation of passion fruit (Passiflora edulis Sims), the profile I measured about 115 cm in secondary forest profile measured 130 cm and in the backyard agroforestry profile measured 105 cm, all with three well defined layers. Therefore, we characterized, in each profile, color, texture, structure, waxy, porosity, texture and plasticity. In general, soils showed similar morphological characteristics and fertility preserved, and the first section of each profile presents horizon organic and the third section configured a textural B horizon, classifying soils as Ultisols.   KEY-WORDS: agroecosystems, classification of soil, organic matter.