Banco de sementes do solo: o estado da arte

Abstract

The modern lifestyle has caused many negative impacts on the environment, promoting the exhaustion of natural resources, pollution and changes in natural environmental conditions. In this way, it shows up valuable development and deployment techniques that envisage the restoration of degraded ecosystems, providing improved environmental conditions. Some methods for reclamation use up the soil seed bank, considering that this is able to accelerate the ecological succession. Depending on the degree of environmental disturbance, the seed bank is able to regenerate it alone, but more worn places it is necessary that a stimulus occurs, and may be by techniques that insert a seed stock in the area. In this context, held literature to synthesize isolated information about the seed bank as a strategy for land reclamation, in order to develop a material that serves as the basis for future studies. Low met proportion of publications whose purpose is the restoration of degraded environments through the seed bank, contemplating in most cases agricultural issues related to weed seeds. Among the analyzed studies, regionsof the Cerrado and Atlantic Forest concentrate most of the publications. Regarding the methodology for sampling the seed bank, usually occurs in a standard depth of 5 cm, however, the dimensions of the area sampled, there was a pattern. As for the costs of the implementation of the seed bank, there is a lack of information in the literature. There is no standard as to the time used to identify the seed bank to germinate put in nursery, however, some authors have reported the need to consider a dry season and a rainy. In the nursery, it is recommended to cover the samples with nylon fabric, avoiding external contamination. The use of seed bank for recovery of degraded environments can prove a very effective technique when choosing a suitable location for delivery.