In a 3-year trial involving 28 ‘Bosc’ rootstock-training systems combinations, significant rootstock-training system induced differences occurred in all peel mineral elements measured for ‘Bosc’ pears. Significant combination X year interactions occurred in peel Ca and Fe. No one rootstock training system combination ranked either “highest” or “lowest” for nutrient content for all the elements evaluated.
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Eugene A. Mielke (2004) studied this question.
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