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Nitrogênio de resíduos de culturas de verão em frações físicas da matéria orgânica de dois solos de terras baixas
(Universidade Federal de Santa Maria, 2018-11-06)
Rio Grande do Sul has about 20% of its total area of soils with hydromorphic characteristics, denominated lowlands suitable for rice cultivation (Oryza sativa) irrigated by flooding. In order to mitigate damage caused by ...
Nitrogênio na solução do solo e aspectos nutricionais e fisiológicos do milho cultivado após 12 anos sob fontes orgânicas e mineral
(Universidade Federal de Santa Maria, 2018-07-19)
Animal manures are frequently utilized in agriculture as a source of nutrients, especially nitrogen (N). The
objective of this work was to evaluate how the application of manure from different animal breeding systems
during ...
Aplicação de cobre na cultura da soja em solos com altos teores de fósforo
(Universidade Federal de Santa Maria, 2018-02-23)
Soils in the state of Rio Grande do Sul were originally well supplied with
micronutrients. Thus, at the beginning of the introduction of the soybean crop, micronutrients
were not recommended for fertilization. It is only ...
Caracterização de biofilmes epilíticos ocorrentes na bacia hidrográfica do rio Guaporé
(Universidade Federal de Santa Maria, 2018-02-28)
Epilithic biofilms dominate microbial life in streams and rivers, lead to crucial ecosystem processes and contribute to global biogeochemical fluxes. However, the intensification of human activities continually exposes ...
Supressão de Meloidogyne sp. por isolados de Trichoderma, na soja
(Universidade Federal de Santa Maria, 2018-02-28)
Plant-parasitic nematodes are worms that parasitize plants. The genus Meloidogyne sp. is considered the most cosmopolitan and polyphagous among plant-parasitic nematodes, causing great damage in crops of agricultural ...
Procedimentos para análise de campo e identificação de qualificadores diagnósticos para solos urbanos
(Universidade Federal de Santa Maria, 2018-02-19)
In cities, actions as soil movement, earthwork and an addition of human artifacts affect the chemical, physical and morphological soil characteristics. Soils altered resulting from man's actions have incited the attention ...
Comunidade microbiana do solo e atividade enzimática em um latossolo subtropical sob plantio direto de longa duração e rotação de culturas
(Universidade Federal de Santa Maria, 2018-04-27)
The development and selection of agricultural practices are one of the main challenges for the sustainability of agroecosystems in response to the increased demand for food. Thus, mediate agricultural practices based on ...
Monitoramento e modelagem hidrológica em pequenas bacias hidrográficas rurais pareadas com produção de grãos e pecuária leiteira
(Universidade Federal de Santa Maria, 2018-02-23)
Accelerated sediment production represents one of the biggest problems in the world in terms of water and soil degradation. Studies of hydrological and sedimentological processes in watershed scale represent a resource to ...
Padrão de umedecimento e movimento da água no solo sob uma fonte pontual de irrigação no gotejamento subsuperficial
(Universidade Federal de Santa Maria, 2018-11-09)
The use of subsurface drip irrigation (SDI) has been increasing as a mean to deliver water,
fertilizers and pesticides to plants, being more effective. Increasing the water use efficiency is
one of the goals of irrigation ...
Estratégias de fornecimento de nitrogênio em videiras em produção
(Universidade Federal de Santa Maria, 2018-02-28)
Soils with sandy texture and low organic matter have low nitrogen (N) availability, it is
necessary supplemental applications to the vines. N is applied on the soil surface without
incorporation, which potentiates losses ...