Métodos de semeadura e uso de mantas no controle de erosão em taludes de corte / Sowing methods and use of erosion control blankets on cut embankments

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

The study was carried out on a cut embankment located on the Federal University of Viçosa campus, Brazil, at latitude 20o 46 10.21"S and 42o 51 31.29"W. The hillside cut had been excavated in 2006 to provide location for the University Recyclable Materials Shed (Galpão de Triagem de Materiais Recicláveis - ASBEM). A random design was used for the experiment, comprised of four treatments (sowing in small planting holes covered by synthetic erosion control blanket, seeding small planting holes with no blanket, sowing in substrate on top of synthetic erosion control blanket, sowing in small planting holes under organic erosion control blanket), each treatment having four repetitions. Sowing for all treatments used a mixture of substrate (sieved soil plus fertilizer) and seeds of the following grasses: Milheto (Penmisetum americanum) and Massai-grass (Panicum maximum cv. Massai), hybrid of Panicum maximum and panicum infestum; and legumes: Stylosanthes Mineirão (Stylosanthes guianensis cv. Mineirão) and Campo Grande (Stylosanthes capitata × Stylosanthes macrocephala), and Crotalária (Crotalaria juncea). Number of individual plants and average plant height for each sowing method were evaluated during March, June, September and December of 2007. The analysis used mean, standard deviation, extreme values and variation. The treatments in which seeds were sown in small holes and then covered with either synthetic or organic erosion control blankets proved to be the most efficient and adequate for the embankment cut studied. Among the tested species, Campo Grande proved to be the most efficient.

ASSUNTO(S)

recuperação de áreas degradadas degraded areas recovery geotêxtil conservacao da natureza revestimento vegetal cut embankments geotextile

ACESSO AO ARTIGO

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