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Características físicas e químicas de sedimentos em suspensão durante eventos fluviométricos em bacias hidrográficas do sul do Brasil
(Universidade Federal de Santa Maria, 2014-08-11)
The observed high sediment load in the rivers of southern Brazil is strongly related to the degradation of agricultural soils due to water erosion. Currently there is great interest in describing the erosive processes and ...
Variabilidade do fósforo extraído causada pela variação analítica nos métodos Mehlich - 1 e 3
(Universidade Federal de Santa Maria, 2013-02-25)
Performing a soil analysis requires a series of operations so a specific element may be conveniently
extracted to be then detected or measured. Protocol methods have been adjusted to facilitate the
execution, however here ...
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 ...
Liberação de fósforo e potássio durante a decomposição de palha de cana-de-açúcar sob diferentes taxas de remoção da palha
(Universidade Federal de Santa Maria, 2022-02-24)
The mechanized harvesting of sugarcane (Saccharum officinarum L.) results in large amounts
of straw deposited on the soil surface, arousing the interest of industries in its use for the
production of bioethanol and ...
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 ...