A commercially available ethylene absorbent was effective in reducing ethylene levels in controlled atmosphere storage chambers containing McIntosh apples (Malus sylvestris Mill.) at 3.3 C. Lowered ethylene levels were often but not always coincident with firmer fruit of early harvests after extended storage. Pre-harvest field treatments with Alar may augment the effect of ethylene removal from storage chambers.
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Lougheed et al. (1973) studied this question.