Physiology of Nitrogen and Calcium Nutrition in Blueberry (Vaccinium sp.)

Sustaining the fourfold increase in blueberry (Vaccinium sp.) production witnessed during previous two decades requires better understanding of its mineral nutrient physiology. The primary goals this review are to evaluate our current physiology nitrogen (N) and calcium (Ca) nutrition blueberry. Nitrogen concentration ranges from 0.4% >2% across organs. Blueberry uses N various forms (organic inorganic), but it appears display preference for ammonium (NH4+) over nitrate (NO3−). roles acquisition, translocation assimilation determining N-source evaluated. Calcium plays important fruit quality owing function maintaining cell wall membrane integrity. It is unique characteristics being transported primarily via xylem. Fruit [Ca2+] typically declines around 0.2% early development <0.05% at ripening. Modes Ca acquisition transport fruit, approaches improve discussed. Areas where further research warranted identified. Such knowledge essential sustainable management, improving productivity, enhancing