Produção de matéria seca de feijoeiros submetidos a diferentes níveis de magnésio em solução nutritiva

• Autor(a) principal: Boaro, Carmen Sílvia Fernandes
• Data de Publicação: 1997
• Outros Autores: Rodrigues, João Domingos, Pedras, José Figueiredo [UNESP], Rodrigues, Selma Dzimidas, Delachiave, Maria Elena A. [UNESP], Ono, Elizabeth Orika
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://seer.sct.embrapa.br/index.php/pab/article/view/4739; http://hdl.handle.net/11449/65181
• topic: Dry matter weight; Macronutrients; Phaseolus vulgaris; Phaseolus (angiosperm)

The effect of Mg levels in nutrient solution upon root, stem, leaf, fruit and total dry matter production of common bean (Phaseolus vulgaris L. cv. Carioca) was studied. Bean plants were grown in Hoagland & Arnon n. 2 solution modified to obtain 2.4, 24.3, 48.6, 72.9 and 97.2 ppm of Mg. The experimental design was a split-plot factorial replicated three times with five Mg levels and five samplings which were done fortnightly. Results were compared with those observed in plants submitted to a nutrient solution with 48.6 ppm of Mg concentration, considered the ideal Mg content. Only a mild prejudicial effect was observed with Mg excessive levels. Stem, leaves and total dry matter were higher when 2.4 ppm were used, suggesting this level as the concentration chosen for the culture of common bean.