Buscar
Itens para a visualização no momento 41-50 of 70
Alterações e transferências de fósforo do solo para o meio aquático com o uso de dejeto líquido de suínos
(Universidade Federal de Santa Maria, 2006-02-22)
The pig slurry may work as nutrients source, however when is used is an improper way can cause accumulation of phosphorus in the soil, that later can be transferred to the aquatic environment causing eutrophication. Objective ...
Parâmetros físicos-hídricos de um latossolo sob diferentes sistemas de manejo e níveis de tráfego
(Universidade Federal de Santa Maria, 2008-02-29)
Soil quality has been widely studied since the soil is recognized as a key resource in agricultural
production. Thus, it is necessary to assess a range of indicators of soil quality, in order to monitor
parameters that ...
Eficiência do calcário calcítico e dolomítico na correção da acidez de solo sob plantio direto
(Universidade Federal de Santa Maria, 2007-02-23)
Liming is used to decrease soil acidity and increase exchangeable calcium and magnesium levels, but it may impaired calcium and magnesium ratios with continuous use of dolomitic or calcitic lime. The aim of this work is ...
Dossiê de ambiência e transição agroecológica no manejo da microbacia hidrográfica do lajeado Biguá, Alecrim - RS
(Universidade Federal de Santa Maria, 2007-02-16)
The atrophic disordinated action over an area leads to degradation of the natural resources, mainly the soil, water and native vegetation, changing the landscape, altering the
ambience and bringing negative consequences ...
Dinâmica da matéria orgânica do solo em áreas de integração lavoura-pecuária sob sistema plantio direto
(Universidade Federal de Santa Maria, 2005-05-30)
The cattle breeding and crop production integrated systems in the south of Brazil is based mostly on grain production with summer crops and beef cattle production over winter pastures. This activity have been expanded ...
Potencial de ciclagem de nitrogênio e potássio pelo nabo forrageiro intercalar ao cultivo do milho e trigo sob plantio direto
(Universidade Federal de Santa Maria, 2004-05-26)
The best understanding of nutrients cycling by crops provides a clearer vision of the contribution of the plants in the accumulation and availability of nutrients in no -tillage. The hypothesis of this work is that the use ...
Produção e qualidade de forragens e atributos de um Argissolo vermelho
(Universidade Federal de Santa Maria, 2008-03-10)
In Brazil, most soils used in the livestock presents some fertility limitations. One of the
alternatives to improve the soils quality is the introduction of perennial species, including grassy and
associated legumes and ...
Sistemas de cultivo da cultura do fumo com ênfase às práticas de manejo e conservação do solo
(Universidade Federal de Santa Maria, 2006-02-23)
Soil management systems with minimum tillage and mulch are predominant in agriculture of Southern of Brazil. No-tillage for tobacco crop is not common and restricted to isolated places and only for some farmers that, through ...
Balanço químico em seis conjuntos solo-saprolito do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2006-04-11)
The knowledge and the determination of the flow and production of elements for the bad weather are important, once they allow understanding the interactions among biological phenomena, hydrological and climatologically, ...
Caracterização, controle alternativo e reprodução de Meloidogyne graminicola em cultivares de arroz irrigado submetidos a diferentes regimes de umidade
(Universidade Federal de Santa Maria, 2007-02-22)
The rice is one of the cereals more cultivated in the world, however its production can be limited by several plant pathogenics agents, among them the rootknot nematode (Meloidogyne spp.). The present work was accomplished ...