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Freqüências de irrigação para Eucalyptus grandis e Pinus elliottii em viveiro
(Universidade Federal de Santa Maria, 2007-08-08)
This study had as object to evaluate the irrigation management influences in Pinus elliottii Engelm. and Eucalyptus grandis W. Hill ex Maiden. seedlings, according to its deficiencies, keeping the germination and development ...
Efeito de diferentes estratégias de irrigação sob a cultura da soja (Glycine max (L.) Merril) na região de Santiago, RS
(Universidade Federal de Santa Maria, 2007-02-16)
Among the different production s factors, water is what most limits the productivity of the cultivated plants, especially in regions where the irregular distribution of pluvial precipitation
is present. In these cases, ...
Efeito de diferentes níveis de irrigação na produtividade e ocorrência de requeima na cultura da batata
(Universidade Federal de Santa Maria, 2007-02-22)
Potato is grown in Central Rio Grande do Sul State mainly by small farmers, which use weekly sprayings with fungicides, without taking into account if meteorological conditions
favor or not Late Blight and other pathogens. ...
Comportamento dinâmico e mecânico do solo sob níveis diferenciados de escarificação e compactação
(Universidade Federal de Santa Maria, 2007-02-16)
Soil compaction under no-tillage system has been causing serious problems to plant growth and to agriculture machines operation due to high soil resistance to tillage. Soil chiseling is a possible solution, however, some ...
Efeito de diferentes estratégias de irrigação sob as culturas de feijão (Phaseolus vulgaris L.) e milho (Zea mays L.) na região de Santiago, RS
(Universidade Federal de Santa Maria, 2007-02-16)
Water is one of the production factors that limit the most the output of cultivated plants. In regions in which the rain distribution is irregular, it may occur significant losses in the output of cultures. In these cases, ...
Estimativa da retenção de água em solos para fins de irrigação
(Universidade Federal de Santa Maria, 2007-03-08)
The purpose of the present work was to establish and to test pedotransfer functions for water retention the Rio Grande do Sul s soils. Water retention data were obtained from Solano Peraza s dissertation, Irriga System ...
Desenvolvimento e estresse hídrico em mudas de Eucalyptus grandis (Hill ex Maiden) e Eucalyptus saligna (Smith)
(Universidade Federal de Santa Maria, 2007-02-16)
Air temperature and soil water are major abiotic factors that affect plants growth and development. The objectives of this study were two: the first was to evaluate and compare two leaf number (NL) simulation models in ...
Simulação gráfica do crescimento de plantas de milho
(Universidade Federal de Santa Maria, 2007-11-09)
The computer graphic simulation can be used to understand plant growth and development influenced by biotic or abiotic parameters. The main simulation purposes are: (i) to predict plant agronomic characteristics when its ...
Adequação da demanda hídrica e da potência instalada em sistemas de recalque para o arroz na depressão central do Rio Grande do Sul.
(Universidade Federal de Santa Maria, 2007-02-28)
The rice culture for Rio Grande do Sul economy is of great relevance. Annually, around one million of hectares are planted. As it is a culture irrigated by a continuum
flood, the supply of the high hydric demand is done ...
Análise do nível de vibrações nos assentos de tratores agrícolas
(Universidade Federal de Santa Maria, 2007-02-28)
Nowadays, whole-body vibration is widely recognized as risk factor for worker all around the world. Most of published works on this subject was developed in main research centers.
The aims of this study were (1) to determine ...