Abstract

An aseptic technique is described that retards the growth of micro flora attacking excised conifer stems kept in water, thus facilitating the rearing of foliage-feeding and tip-infesting insects. Treated foliage remained fresh for an average of 5 weeks or until the foliage was consumed, whereas untreated foliage averaged only 10 days. The technique is most useful when time or insufficient host material creates a difficult, expensive rearing situation.

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