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A Study Of Rest Period, Hardiness, And Bud Development Of The 'Concord' Grape, Mervin Gayle Weeks
A Study Of Rest Period, Hardiness, And Bud Development Of The 'Concord' Grape, Mervin Gayle Weeks
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The length of the 'Concord' grape rest period was evaluated during 1974-75 and 1975-76. Cuttings were placed in a 25 C growth chamber every two weeks from October through April. Number of days to reach 50 percent full bud swell was plotted to determine rest completion. Seven years of weather data and full bloom dates of 'Concord' grapes from Prosser, Washington were statistically analyzed to give another estimate of rest completion. Rest was terminated after about 830 chill units.
During 1974-75 and 1975-76, T50 temperatures were determined every two weeks for both cambium and primary buds of 'Concord' grapes. …