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Doses e épocas de aplicação de nitrogênio na suscetibilidade do arroz a temperatura baixa na fase reprodutiva
(Universidade Federal de Santa Maria, 2008-06-12)
The release of new cultivars and improvement in management practices is necessary to examine the time and nitrogen (N) rates to be applied to obtain high yields. Also there is little information about the effect of the N ...
Indução pós-colheita da síntese de resveratrol e de resistência de frutos a podridões
(Universidade Federal de Santa Maria, 2008-02-27)
The objectives of this work were divided in two experiments phases. In the first phase, it was
studied the presence of trans-resveratrol in temperate climate fruits and the variation of their
concentration in these fruits ...
Toxidez de alumínio em genótipos de Pfaffia glomerata (Spreng.) Pedersen e Pfaffia tuberosa (Spreng.) Hicken
(Universidade Federal de Santa Maria, 2008-02-22)
Al toxicity, especially in acid soils, is a determinant factor of lower productivity for
several cultures and, although some studies have been developed to elucidate this problem,
studies on medicinal plants are extremely ...
Desenvolvimento do arroz e do arroz vermelho: modelagem e resposta à mudança climática
(Universidade Federal de Santa Maria, 2008-02-28)
Increases of 1.1 to 6.4°C in temperature are projected by the end of the XXI century in
several locations, including Brazil. Among processes that may be affected by increasing
temperatures is the duration of the developmental ...
Seleção de clones de batata de curta dormência, alta qualidade de processamento e adaptados aos cultivos de primavera e outono
(Universidade Federal de Santa Maria, 2008-02-25)
Selection of potato clones might be done during spring and autumn grown seasons of Rio Grande do Sul (RS). These grown seasons have contrasting conditions of temperature,
photoperiod and solar irradiation, which may affect ...
Genética dos teores de cálcio e de ferro em grãos de feijão comum
(Universidade Federal de Santa Maria, 2008-02-15)
The common bean has significant levels of calcium and iron in grains, providing that
this legume is used in human food controlling minerals deficiency. Furthermore, genetic
variability for these minerals were observed, ...
Residual da mistura formulada dos herbicidas imazethapyr e imazapic em áreas de arroz sob diferentes manejos de solo
(Universidade Federal de Santa Maria, 2008-04-03)
Red rice (Oryza spp.) is one of the main limiting factors of rice yield (O. sativa L.) in the world and particularly in the Rio Grande do Sul (RS) state Brazil. The Clearfield®
technology is a viable and efficient tool for ...
Freqüência de irrigação no cultivo hidropônico da alface
(Universidade Federal de Santa Maria, 2008-02-21)
The objective of the work was to verify the influence of four intervals between the irrigations on the production of lettuce in hydroponics system and the retention of nutrient solution, besides more determining the best ...
Substâncias húmicas em solos de diferentes feições geomorfológicas no rebordo do planalto do Rio Grande do Sul
(Universidade Federal de Santa Maria, 2008-12-16)
In spite of the great importance of the soil organic matter for the sustainability of the
natural systems and of agricultural production, its study remains incipient in the area
of the Edge of the Rio Grande do Sul Plateau, ...
Disponibilidade de potássio afetada por cultivos em solos com longo histórico de adubação
(Universidade Federal de Santa Maria, 2008-02-15)
In soils containing minerals with potassium in non-exchangeable forms, crops
uptake a larger amount of this nutrient than that the chemical method can extract,
making more difficult the establishment of availability classes ...