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Effects of application rate and timing of ethephon treatments on abscission of ponderosa pine dwarf mistletoe

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By: Johnson, David W. (David Winslow), - Hawksworth, Frank G. (Frank Goode), - Hildebrand, D.M.

Holding Institution: U.S. Department of Agriculture, National Agricultural Library

Subjects: abscission application timing Arceuthobium vaginatum Colorado ethephon Parasitic plants Pinus ponderosa shoots Weed control