Avaliação de perdas de solo e água por erosão em sistemas de cultivo sob chuva natural no ambiente de savana em Boa Vista, Roraima

• Ano de defesa: 2010
• Autor(a) principal: Pinheiro, Isabel Cristina Leão
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Roraima; Brasil; PRPPG - Pró-Reitoria de Pesquisa e Pós-Graduação; PRONAT - Programa de Pós-Graduação em Recursos Naturais; UFRR
• Palavras-chave em Português: Savana; Latossolo amarelo; Escoamento superficial; Uso da terra; Amazônia; Savannah; Yellow Latosol; Run off; Land use; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA::CIENCIA DO SOLO
• Link de acesso: http://repositorio.ufrr.br:8080/jspui/handle/prefix/304

The research analysed the loss of soil and water caused by erosion which happens by run off in savannah, uncovered soil, in corn crop (Zea mays L.), Caupi crop (Vigna unguiculata L. Walp), watermelon crop (Citrillun canatus), and pasture (Brachiaria brizantha Hochst Stapf), between the period of June 2009 and June 2010 on Cauamé Campus at the Federal University of Roraima, UFRR, Boa Vista, Roraima. After sediment collecting squares being installed in yellow soil, and then being attached to water and soil collecting tanks in savannah environment, the percentage rates of ground cover and the physical parameters related to the loss of soil were determined, such as grain composition, bulk density (Ds), penetration resistance (RP), basic infiltration velocity (VIB) and humidity. The monitoring of climatic conditions was done by the automated meteorological station beside to experimental area. The experimental delineation was entirely done using five different treatments and two repetitions per treatment.