Ethylene gas for defoliation of hydrangeas
1994
Blom, T.J. | Smith, R.B.
Summer-grown Hydrangea macrophylla subsp. macrophylla var. macrophylla (Thunb.) were exposed for 1 week to C2H4 at 0, 0.5. 2.0, 5.0, 50, or 500 microliters.liter-1 in dark storage at 16 C for defoliation before cold storage. The number of leaves remaining per shoot for all cultivars decreased with C2H4 concentration, and > 5 microliters C2H4/liter was effective in defoliating 'Kasteln', 'Mathilda Gutges', and 'Todi' but not 'Merritt's Supreme'.
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