Crop Management Affects Lutein Levels in Soybeans

MADISON, Wis.Scientists have discovered crop management and cultivar selection can boost lutein levels in soybeans, according to a new study published in the journal Crop Science. The findings may help expand the markets for soybean producers.

Researchers at McGill University, the Centre de Recherche sur les Grains, and Agriculture and Agri-Food Canada in Quebec studied the impact crop management practices and cultivar selection have on lutein concentrations in soybean grown in multiple environments.

Almost all crop management practices investigated affected soybean lutein concentrations in most of the environments. The seeding date had the greatest effect on concentrations of the chemical, with differences in lutein concentration averaging 41%. Seeding rate, row spacing and fertilization effects were moderate, never exceeding an 8% difference between treatments. Scientists were able to identify soybean genotypes with high and stable lutein concentrations.

"This suggests that the selection and development of high lutein cultivars should be possible," said lead author Philippe Seguin. Additionally, environmental factors and crop management practices should be considered in the production and use of soybean as a lutein source."