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Compactação em latossolos e argissolo e relação com parâmetros de solos e de plantas
(Universidade Federal de Santa Maria, 2005-02-28)
Soil compaction is closed related to agriculture as well as animal production management. Soil quality improvement has not been always achieved with use of soil conservation practice as no-tillage or use of animal production ...
Tempo de implantação do sistema plantio direto e propriedades físico-mecânicas de um latossolo
(Universidade Federal de Santa Maria, 2009-12-23)
Which the effect of no-tillage system on the soil physical and mechanical properties along the time? With this question, the objective this study was to evaluate the effect of the no-tillage system along the time on the ...
Aspectos técnico, econômico e ambiental do uso de fontes orgânicas de nutrientes, associadas a sistemas de preparo do solo
(Universidade Federal de Santa Maria, 2005-06-24)
The manures have been used as organic nutrient sources in many soil and climatic conditions, and their effects on technical, economic and environmental aspects are dependent on their characteristics and it can be changed ...
Simulação da necessidade de irrigação no estado do Rio Grande do Sul para compensar perdas por deficiência hídrica de milho, soja e feijão
(Universidade Federal de Santa Maria, 2004-02-27)
The temporal and spatial variability of the rainfall amount and its distribution is usually the major cause of agricultural yield losses. These variables are responsible for the oscillations in yields of Spring and Summer ...
Qualidade física de um vertissolo e produção forrageira em campo nativo melhorado, com irrigação e pastoreio
(Universidade Federal de Santa Maria, 2005-02-28)
The predominant production system in North central Uruguay is based on the combined beef cattle and sheep cattle grazing of native grasslands. Soils include an important area of Pelluderts, with high content of expansible ...
Propriedade de um nitossolo vermelho após nove anos de uso de sistemas de manejo e efeito sobre culturas
(Universidade Federal de Santa Maria, 2005-03-02)
Long-term use of management systems result in alteration in physical and chemical soil properties and its intensity is related to time, soil and climate conditions. Physical
properties are more susceptible to changes by ...
Potencial do Pupinus albescens Hook. & Arn. para recuperação de solos arenizados do bioma pampa
(Universidade Federal de Santa Maria, 2007-02-28)
As the productive processes move forward on the sandy soils of the Southwest region of Rio Grande do Sul, the
arenização has been assuming relevance as factor of soil and regional ecosystem degradation. Contention measures ...
Tolerância de espécies florestais arbóreas e fungos ectomicorrízicos ao cobre
(Universidade Federal de Santa Maria, 2007-12-13)
The contamination of soil for copper had refusal contribute to plants establishment in mining and vineyards areas of South Brazil. Mycorrhyzal forestry species could be one alternative to viable the development of plants ...
Avaliação e modelização da dinâmica de carbono e nitrogênio em solo com o uso de dejetos de suínos
(Universidade Federal de Santa Maria, 2005-02-28)
The managedment of the pig manure, in the slurry or solid form (deep bedding), and how it is applied to the soil, in the surface or incorporated, must affect the dynamics of the C and the N in the soil. The objectives of ...
Dinâmica do nitrogênio sob sistema plantio direto e parâmetros para o manejo da adubação nitrogenada no milho
(Universidade Federal de Santa Maria, 2009-03-27)
Among the several essential nutrients in the nutrition of the maize, without a doubt, the nitrogen (N) is one of the most important. However, most of the time, the amount naturally available in the soil is insufficient ...