SEEDLING PARICÁ PRODUCTION WITH SLAG, INOCULATED MYCORRHIZAL FUNGI IN REHABILITATION OF DEGRADED AREAS

Abstract

ABSTRACT: The mining causes a number of physical impacts to the environment, of the same way the iron production causes impacts, and the main is the generation of large amounts of wastes that cause environmental and visual pollution. One of these wastes to slag, presents the ability to correct the soil acidity. Then this work has the objective of to produce seedlings of paricá(Schizolobium parahyba var. amazonicum (Huber ex Ducke) Barneby) with increasing doses of slag, inoculated with Arbuscular Mycorrhizal Fungi (AMF) to rehabilitate these areas and minimize environmental and visual pollution. The AMF inoculum was produced by cultivating trap with Brachiaria brizantha in a greenhouse. The seedlings were produced with substrate containing soil in the area of ??tailings and slag, inoculated at planting. The slag used in the experiment was obtained from the company SI NOBRAS. The Paricá seeds passed through the process of breaking dormancy. The experimental design was a factorial using a completely randomized design (CRD). The data were processed and evaluated for the test average (t) 1% and 5% and regression. The variables showed significant levels of 1% in slag factor. The plants inoculated with arbuscular mycorrhizal fungi responded positively the doses of slag.   KEY-WORDS: biological supplies, industrial wastes, restoration.