A. Krueger, R. Hughes, B.A. Michaelis, L.A. Peterson
Zinc response of cranberries (Vaccinium macroncarpon Ait.) was studied in nutrient solution cultures under greenhouse conditions. Two techniques were used for the study: (1) rooted cuttings were grown for 10 weeks in cultures with zinc concentrations ranging from 0 to 0.4 ppm, (2) rooted cuttings were grown for 8 weeks in complete nutrient solutions containing 0.05 ppm zinc, after which they were transferred to solutions minus zinc.

Shoot growth increased rapidly with an increase in shoot zinc concentration from 7 to 15 ppm, with no further increase in yield as concentration increased to approximately 50 ppm. These data support a critical zinc concentration of 13 ppm in cranberry shoot tissue.

Normal growing cranberry plants developed zinc deficiency symptoms about 2 weeks after transfer to minus zinc nutrient solutions. These symptoms appeared as a reddening of the newly developed leaves and stem with an occastional red streaking in older leaves. The symptoms became more severe with time.

Krueger, A., Hughes, R., Michaelis, B.A. and Peterson, L.A. (1989). CRANBERRY NUTRITION: ZINC. Acta Hortic. 241, 167-170
DOI: 10.17660/ActaHortic.1989.241.26

Acta Horticulturae