Search Results

You are looking at 1 - 10 of 17 items for

  • Author or Editor: Joe N. Corgan x
  • All content x
Clear All Modify Search
Free access

Christopher S. Cramer and Joe N. Corgan

Free access

Arthur D. Wall and Joe N. Corgan

In dry climates, onions usually have the roots undercut at maturity before harvest. In a 2-year study, dehydrator onions were uprooted at maturity to simulate undercutting, and harvest was delayed for several time intervals. Treatment effects on fresh and dry yield, the number of bulbs per plot, bulb fresh and dry weights, and percent dry weight of bulbs were measured. Plots were considered mature when 80% of the tops had fallen. Delaying harvest 15 days after maturity without uprooting did not reduce yield significantly. Yield and both bulb weight and percent dry weight tended to decline when harvest was delayed >15 days after maturity, especially if plants were uprooted. This suggests that undercutting of onions should not be performed until just prior to harvest and that harvest should not be delayed >15 days past maturity. Yield losses in delayed harvest treatments were attributed primarily to Fusarium basal rot.

Free access

Christopher S. Cramer and Joe N. Corgan

Free access

Christopher S. Cramer and Joe N. Corgan

Free access

Christopher S. Cramer and Joe N. Corgan

Free access

Marisa M. Wall and Joe N. Corgan

Individual onion (Allium cepa L.) bulbs were evaluated for pungency by measurement of enzymatically produced pyruvate and by flavor perception. In four separate experiments, pyruvate values were highly and significantly correlated to mean sensory ratings. Correlation coefficients (r) were 0.92, 0.84, 0.95, and 0.79, and regression coefficients (R2) were 0.84, 0.71, 0.91, and 0.62. The high correlations indicate that pyruvate analysis can be used as a reliable selection technique for pungency in onion breeding programs.

Free access

Christopher S. Cramer and Joe N. Corgan

Free access

Christopher S. Cramer and Joe N. Corgan

Free access

Christopher S. Cramer and Joe N. Corgan

Free access

Christopher S. Cramer and Joe N. Corgan