Hi Dereje

I'm not a specialist, but meybe this will be useful:

K. Skupień, J. Oszmiański 2007; The effect of mineral fertilization on nutritive value and biological activity of chokeberry fruit, "Agricultural and Food Science", 16(1): 46-55.

http://www.mtt.fi/afs/pdf/mtt-afs-v16n1p46.pdf

K. Skupień, I. Ochmian, J. Grajkowski 2008; Influence of mineral fertilization on selected physical features and chemical composition of aronia fruit, "Acta Agrophysica", 11(1): 213-226.

http://www.old.acta-agrophysica.org/artykuly/acta_agrophysica/ActaAgr_156_2008_11_1_213.pdf

A. Kokotkiewicz, Z. Jaremicz, M. Luczkiewicz 2010; Aronia plants: a review of traditional use, biological activities, and perspectives for modern medicine, "Journal of Medicinal Food", 13(2): 255-269.

http://www.eclecticherb.net/Aronia%20review%202010.pdf

Best Regards

Maciej Wawrzczak