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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. ...
Metais pesados em solos sob aplicação de dejetos líquidos de suínos em duas microbacias hidrográficas de Santa Catarina
(Universidade Federal de Santa Maria, 2006-10-27)
The application of pig slurry in agricultural soils can be an efficient form of nutrients cilcle and one of the best alternative for discard and minimizing his pollutant potential. However, the differences between his ...
Diagnóstico da fertilidade de solos em áreas sob plantio direto consolidado
(Universidade Federal de Santa Maria, 2006-02-16)
The soybean average productivity in Rio Grande do Sul presents great oscillations which are attributed to climatic adversities. The productivity can also be afected by soil fertility limitations, specially acidity and P ...
Dinâmica do enxofre no sistema solo e resposta das culturas à adubação sulfatada
(Universidade Federal de Santa Maria, 2006-02-24)
The conversion of pastures natives to grain production in soils with low clay and organic matter levels and/or the non-replacement of the exported sulfur by crops could cause a decrease on the availability of this nutrient ...
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 ...
Efeito do cobre na população de bactérias e fungos do solo, associação ectomicorrízica e no desenvolvimento de mudas de eucalipto e canafístula
(Universidade Federal de Santa Maria, 2006-12-07)
The microrganisms are sensitive to the presence of determined concentrations of copper being considered biorremediadores able to move metal through active and passive processes, accumulating them in his cellular compartments ...
Nitrato na solução do solo e na água de fontes para consumo humano numa microbacia hidrográfica produtora de fumo
(Universidade Federal de Santa Maria, 2006-11-24)
The tobacco production system in Rio Grande do Sul state is mainly developed in small farms, using shallow soils in steep slope. In these areas rivers are born forming small
watersheds. The areas are fragilized by use of ...
Caracterização de sedimento e de contaminantes numa microbacia hidrográfica antropizada
(Universidade Federal de Santa Maria, 2007-03-28)
The agricultural activities generate an impact on the environment that needs constant study to improve the understanding of the ways, levels and implantation of litigator practices of contamination. The study of contaminants ...