TRENDS IN LEAF NUTRIENT LEVELS IN COMMERCIAL HIGHBUSH BLUEBERRY PLANTINGS IN MICHIGAN

E.J. Hanson
Michigan State University has provided a service to analyze leaf samples for highbush blueberry (Vaccinium corymbosum L.) producers in Michigan. An average of 208 samples have been received annually since 1964. Mean annual N, P, K, Ca, Mg, B, Fe, Mn and Zn concentrations of samples received between 1964 and 1987 were used to follow long term trends in leaf nutrient levels.

Mean P, CA, Mn and B levels followed a decreasing trend over the 24 year period. Mean leaf N levels increased significantly over this period, while K, Mg and Zn levels followed no clear trend.

Hanson, E.J. (1989). TRENDS IN LEAF NUTRIENT LEVELS IN COMMERCIAL HIGHBUSH BLUEBERRY PLANTINGS IN MICHIGAN. Acta Hortic. 241, 157-161
DOI: 10.17660/ActaHortic.1989.241.24
https://doi.org/10.17660/ActaHortic.1989.241.24

Acta Horticulturae