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Qualidade de águas superficiais e tratamento de águas residuárias por meio de zonas de raízes em propriedades de agricultores familiares
(Universidade Federal de Santa Maria, 2007-02-23)
The anthropic action has changed the water quality of rivers and its tributaries as well as the sheets. In rural areas, where there is the predominance of familiar agriculture linked to the agroindustry, this problem is ...
Biotransformações do nitrogênio no solo durante a decomposição de palha de trigo e dejetos líquidos de suínos
(Universidade Federal de Santa Maria, 2007-04-20)
Nitrogen is usually the element present in higher concentration in pig slurry and the one that causes the major problems related to environmental pollution, since it is subjected of several transformations after soil slurry ...
Dinâmica do carbono durante a decomposição de palha de trigo marcada com 13C e dejetos líquidos de suínos
(Universidade Federal de Santa Maria, 2007-05-11)
In no-tillage areas, the pig slurry is applied on the cultural residues, as much as cover or commercial crops. A few research information exists involving the soil carbon dynamics with this modality of pig slurry application. ...
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 ...
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 ...
Caracterização de bactéria fixadora de nitrogênio em Lupinus albescens
(Universidade Federal de Santa Maria, 2007-02-22)
The objective of this work was to characterize promising isolated rhizobium of L. albescens in the nitrogen biological fixation. Two hundred and four isolates were obtained from three species of lupine (L. albescens, L. ...
Estimativa do estado nutricional de arroz irrigado por alagamento
(Universidade Federal de Santa Maria, 2007-02-15)
The difficulty to predict the intensity of soil properties alterative by soil flooding frequently makes the interpretation of the soil analysis results inaccurate when considering nutrients availability to the plants. ...
Aptidão, evolução e conflitos de uso das terras no município de Itaara, RS
(Universidade Federal de Santa Maria, 2007-02-28)
The landscape is constantly altered by the man's action. The rational use of the natural resources and space it should be done in agreement with the natural vocation of the environment. For so much it is necessary the ...
A insustentabilidade do uso do solo com fumicultura em terras declivosas
(Universidade Federal de Santa Maria, 2007-02-22)
Areas susceptibility to water erosion and strong pressure of soil use, as in Southern Brazil, where there is cultivation of tobacco, are prone to degradation of the natural resources. The objective of this dissertation was ...