Authors: Roberts, Bruce R.; Main, Harold V.

Source: Journal of Forestry, Volume 63, Number 3, 1 March 1965 , pp. 180-181(2)

Publisher: Society of American Foresters

Abstract:

Seedlings of American elm (Ulmus americana, L.) were subjected to chilling temperatures for periods ranging from 15 through 60 days and to photoperiods ranging from 6 through 19 hours. Results show moderate chilling treatment and an extended photoperiod are most effective in giving maximum hud break in the shortest length of time. Data also indicate temperature may be a significant factor in determining bud break, especially if photoperiod is limiting.

Document Type: Journal article

Affiliations: 1: Staff of the Agric. Research Service, Crops Research Division, Shade Tree and Ornamental Plants Laboratory, U.S. Dept. Agric., Delaware, Ohio

Publication date: 1965-03-01

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