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Sistemas de cultivo para a cultura de melancia
(Universidade Federal de Santa Maria, 2010-07-15)
Aiming to evaluate the watermelon crop (Citrullus lanatus L.) in different management systems, on an Ultisol in the Central Depression of RS, Brazil, an experiment was carried out during the agricultural year 2008/2009 ...
Correção da acidez do solo em subsuperfície em um latossolo de textura franco-arenosa sob plantio direto
(Universidade Federal de Santa Maria, 2008-01-29)
In tropical and subtropical areas, especially, where there is the dry period occurrence, the acidity subsurface (below the 10 cm) it has been pointed as one of the limitation causes to the growth of roots and the agricultural ...
Efeito do calcário em atributos biológicos do solo
(Universidade Federal de Santa Maria, 2005-02-28)
The soil is a complex system composed by live organisms, organic matter, gases, water and minerals parts that interact. In this sense, the soil organisms, besides inhabitants, are part of its composition. In the soil, the ...
Erosão bruta e produção de sedimentos em bacia hidrográfica sob plantio direto no planalto do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2013-02-28)
The impact of agriculture on water resources has been a focus for problems associated with reservoir siltation, depletion of water quality, reduced infiltration and soil water storage, formation of floods and low water ...
Compactação do solo e sua influência nas propriedades físicas do solo e crescimento e rendimento de culturas
(Universidade Federal de Santa Maria, 2005-02-28)
Sol compaction effects on soil and plants has been subject of several studies. However, several parameters are used to evaluate soil compaction like bulk density and soil penetration resistance, but these parameters are ...
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 ...
Redistribuição de sedimentos em encostas por meio do C total e do isótopo 13C
(Universidade Federal de Santa Maria, 2017-07-17)
High intensity of rains, associated with inadequate management in agricultural areas, have been caused loss of large volumes of soil by erosion, leading the sediments and nutrients to the hydric sources. The loss of sediments ...
Modelagem matemática do escoamento superficial na escala de encosta sob plantio direto
(Universidade Federal de Santa Maria, 2017-02-24)
The runoff generation over fields with no-tillage agriculture management remains being a problem with environment, social and economic impacts. The purpose of this research was evaluate the capacity of a physic based and ...
Plantas de cobertura de solo consorciadas e em cultivo solteiro: Decomposição e fornecimento de nitrogênio ao milho
(Universidade Federal de Santa Maria, 2010-02-26)
No-tillage system is a soil management practice which predominates in the agricultural fields of Rio Grande do Sul Plateau. For its success, is essential the permanent vegetal soil cover maintenance and an adequate crop ...
Balanço e evolução temporal de fósforo e potássio em três solos sob sistema plantio direto no Paraguai
(Universidade Federal de Santa Maria, 2010-02-26)
Soybean, corn and wheat crops occupy actually 70% of the agricultural areas of Paraguay, with increasing fertilization consumption, suggesting the necessity of an
efficient use of this input. The objectives of this work ...