Qualidade do solo em sistema plantio direto

• Ano de defesa: 2016
• Autor(a) principal: Gorte, Tatiane
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Positivo; Brasil; Pós-Graduação; Programa de Pós-Graduação em Gestão Ambiental; UP
• Palavras-chave em Português: Gestão ambiental; Agricultura - Aspectos ambientais; Agrobiodiversidade; Minhoca; Solo - Uso; CNPQ::CIENCIAS BIOLOGICAS; CNPQ::ENGENHARIAS::ENGENHARIA SANITARIA
• Link de acesso: https://repositorio.cruzeirodosul.edu.br/handle/123456789/2470

The No-Till System is a conservation management used in agriculture and, when practiced following its principles, has less impact on the environment, preventing losses by erosion and consequently water siltation. This management system favors the population of earthworms, considered allies to soil quality. As a benefit of the environment where they operate they promote degradation of organic matter and changes in physical and chemical soil properties. The aim of this study was to evaluate soil quality through physical, chemical and biological attributes in sites under No-Till in western Parana (Paraná Basin 3). The earthworms were sampled using the adapted Tropical Soil Biology and Fertility method (TBSF), which consists by the removing soil monolith (20 x 20 cm width x 20 cm depth). Earthworm were manually sorted in the field and set in absolute alcohol, for subsequent counting, weighing and identification.There were also collected soil for measuring soil fertility, particle size, bulk density, moisture content and total porosity. As well were measured the resistance to penetration and survey of the historical of the sites. Few significant correlations between the Quality Index Participatory (IQP) of No-Till and the measured soil properties were found. This shows the weakness of the index and perhaps the need for an overhaul in its indicators weights and the main calculation. Most of the sites was rated as moderate regarding the earthworm abundance and species richness, which demonstrates the need of improvements in the management of the No-Till sites stimulate the grow of earthworm populations. The variables linked to earthworms (abundance, biomass, species richness, percentage of native and exotic species) showed to be important to separate the No-Till sites, together with the other soil attributes. Comparing the earthworm populations in sites in different sampling dates, the earthworm abundance and richness differs significantly between some sites, as well, over the years, showing an effect of soil management and climatic conditions on earthworm populations.