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Itens para a visualização no momento 21-30 of 38
Uso de covariáveis ambientais na predição da variação espacial do teor de fósforo disponível em área agrícola do Sul do Brasil
(Universidade Federal de Santa Maria, 2021-09-28)
The demand for more accurate maps of soil attributes in agriculture have been increasing over years, especially aiming a more rational use of phosphorus fertilizer which can lead to serious environmental damage, like ...
Caracterização de um vermicomposto com diferentes tempos de bioconversão
(Universidade Federal de Santa Maria, 2021-05-28)
Vermicomposting is an environmental-friendly process of biotransformation of organic waste into useful products. The aim of the study was to evaluate the relationship between vermicomposting time and changes in biological, ...
Avaliação da saúde do solo em sistemas agrícolas sob agricultura conservacionista no Brasil
(Universidade Federal de Santa Maria, 2022-03-12)
Conservation agriculture (CA) has been promoted as the main strategy to regenerate soil life but its effect on soil enzyme activity and on soil microbiota remains little documented. This study investigated the β-glucosidase ...
Relação entre as emissões de N2O e a expressão dos genes do ciclo do nitrogênio em um solo cultivado com milho sobre resíduo de ervilhaca
(Universidade Federal de Santa Maria, 2022-02-04)
Addition legume residues as cover crops may increase soil N2O emissions under no-tillage system. However, when there is water deficit and grass cultivation in succession, the activity of denitrifying microorganisms and ...
Propriedades reológicas de solos antárticos afetadas por ciclos de congelamento e descongelamento
(Universidade Federal de Santa Maria, 2020-03-12)
The detailed study of the Antarctic soils is considered one of the priorities in this region, being fundamental for a better understanding of the functioning of terrestrial ecosystems and analysis of the possible effects ...
Estimativa da acidez potencial em solos utilizando a espectroscopia Vis-NIR
(Universidade Federal de Santa Maria, 2022-09-30)
The chemical analysis of soil components is a tool that allows good practices for correctives
and fertilizers recommendation and managing soil fertility. Traditional methods of analysis
usually consume a high number of ...
Perdas de nutrientes associadas ao escoamento e aos sedimentos erodidos em encostas sob plantio direto
(Universidade Federal de Santa Maria, 2022-01-31)
No-tillage (NT) is widely used in areas of grain crops in tropical and subtropical regions.
However, crops fields under NT with low phytomass addition and without runoff control
practices are highly susceptible to ...
Alterações de propriedades físico-hídricas em solos arenosos do bioma Pampa sob usos distintos
(Universidade Federal de Santa Maria, 2023-02-28)
The naturally fragile sandy soils of the pampa biome (BP) are being degraded with the
introduction of poorly managed agricultural crops. Anthropic use can markedly decrease
vegetation cover on sandy soils, leaving them ...
Eficiência na absorção e proposição de níveis críticos de nutrientes em citros
(Universidade Federal de Santa Maria, 2022-08-31)
Citrus plants adapt well in tropical, temperate, and subtropical countries, which turns them of
great importance to the agriculture sector. Usually, kinetics parameters related to nutrient
uptake are not evaluated, that ...
Alteração da textura pela dispersão mecânica e retenção de água na fração areia em neossolos derivados de rocha vulcânica
(Universidade Federal de Santa Maria, 2020-11-24)
The definition of the time for mechanical dispersion that ensure total dispersion without
altering the amount of sand, silt and clay in soils with fragments of saprolite is still a
research gap. Moreover, the effect of ...