Atributos físicos e químicos de um latossolo, fase cerrado, sob diferentes sistemas de manejo

• Ano de defesa: 2008
• Autor(a) principal: Bilibio, William Diniz
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Uberlândia; BR; Programa de Pós-graduação em Agronomia; Ciências Agrárias; UFU
• Palavras-chave em Português: Manejo de solo; Relação macro/microporos; Sistemas de plantio; Calcário; Gesso; Solos - Manejo; Soil management; Macro/microporos relation; Tillage systems; Limestone; Gypsum.; CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
• Link de acesso: https://repositorio.ufu.br/handle/123456789/12098

Chemical and physical attributes of an Acrustox subjected to different management systems were evaluated. The experiment was conducted at the Fazenda do Glória/UFU since 2000. The field experimental area was conducted during seven years, in a randomized block design, to evaluate some chemical and physical attributes of the soil, at depths of 0-5, 5-15 and 15-30 cm, for different management systems (conventional and conservationist). The parameters examined were: density, porosity, macro and microporosity, aggregate stability, total organic carbon (TOC), phosphorus (P), calcium (Ca2+), magnesium (Mg2+), potassium (K+), nitrogen (N) and aluminum (Al3+). Statistical differences were found between conventional and conservationist treatments. The values indicated a density increase with the depth, combined with porosity decrease as the relationship macro/micropores and with lower aggregate stability in conventional system in comparison with the conservationist systems. Statistical differences of the chemical attributes of soil, between the conservationist and conventional treatments, were found only at the top 5 cm of the soil, only for the elements Ca, P and K. Aluminum correction was more efficient in the conventional system, due to lime addition in the soil, independent of gypsum addition.