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Fitorremediação de solo de várzea contaminado com os herbicidas do imazetapir e imazapique
(Universidade Federal de Santa Maria, 2011-02-25)
Adverse effects of the use of herbicides, such as toxicity to non-target species and production of persistent residues in soil and in surface water, have drawn
attention and stimulated research to better understand the ...
Avaliação da eficiência operacional na operação de colheita mecanizada em lavouras de arroz irrigado
(Universidade Federal de Santa Maria, 2011-03-31)
The objective of this thesis was evaluate the efficiencies of the harvesting operation
in rice fields, located in the region of Depressão Central do Rio Grande do Sul. As
specific objectives, this study sought to determine ...
Capim capivara: tratamentos pré-germinativos, superação da dormência de sementes e sensibilidade a herbicidas
(Universidade Federal de Santa Maria, 2011-02-25)
The West Indian Marsh Grass is a native grass to tropical areas of Central and South America, which grows in wetlands, supporting intermittent periods of flooding. Their forms of propagation by fragments of rhizomes, rooting ...
Efluxo de metano em solo sob manejos de irrigação e cultivares de arroz irrrigado
(Universidade Federal de Santa Maria, 2011-12-19)
Human activity has been pointed out as the main reason of global warming by
effluxes of CO2, N2O and CH4. In the last years, harmful effects of greenhouse gases
due to its increase in atmosphere have been arousing interests ...