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• Autor(a) principal: Boaro, Carmen Sílvia Fernandes
• Data de Publicação: 1996
• Outros Autores: Rodrigues, João Domingos, Rodrigues, Selma Dzimidas, Delachiave, Maria Elena Aparecida, Ono, Elizabeth Orika, Pedras, José Figueiredo
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Biotemas (Online)
• Texto Completo: https://periodicos.ufsc.br/index.php/biotemas/article/view/22005

The effect of magnesium levels in nutrient solution upon growth of common bean (Phaseolus vulgaris L. cv Carioca) was studied. Bean plants were grown in pots containing Hoagland and Arnon n.2 solution modified to obtain 2.4, 24.3, 48.8, 72.9 and 97.2 ppm of magnesium. The experimental design was a split-plot factorial replicated 3 times with 5 levels of magnesium and 5 samplings which were done forthnightly, with leaf area rate (LAR), specific leaf area (SLA), specific leaf weight (SLW), net assimilation rate (NAR) and relative growth rate (RGR) determinations. Therefore, it may be suggested that the 48.6 ppm of magnesium level is the best choice for the common bean, according to the conditions of this experiment. Magnesium concentrations over 48.6 ppm did not show significant alterations of the evaluated parameters. Nutrient solution with 2.4 ppm of magnesium provides a good condition to the common bean plants during almost all its cycle, except the final of the reproductive phase.