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Abstract
Apple seedling (Malus domestica Borkh.) growth and nutrition were compared over a range of nutrient level treatments using A different experimental nutritional methods: nutrient‐film, soil, sand, and solution culture. A 2‐ to 10‐fold difference in nutrient level caused significant differences between experimental methods on seedling growth. Higher nutrient levels resulted in reduced growth in the nutrient‐film and soil cultures, increased growth in sand cultures and little effect on growth in solution cultures. Tissue Ca, of the nutrients studied, was significantly different depending upon the experimental method. Alternating the nutrient level either by elevating K or reducing Ca/Mg resulted in significant interactions on tissue Ca depending upon the experimental method used. The results showed that under similar environmental and treatment conditions, data on growth and nutrition of apple seedlings can vary significantly depending on the type of experimental method employed.
Notes
Visiting research horticulturist, Baltamean, Cushendum, County Antrim, North Ireland, BT 44 OPZ.