Abstract
Abstract ‘Granex 33’ and ‘Sweet Georgia’ onions (Allium cepa L.) at various stages of maturity were harvested by hand and with a prototype mechanical harvester in 1985 and 1986. Bulbs were evaluated for storage losses and bulb quality. Storage losses of both hand-harvested and machine-harvested bulbs were generally similar and increased with increased maturity. Bulb pungency was not affected by harvesting methods and was least for bulbs harvested when 6% of the tops were down. Total sugar concentration of hand-harvested onions, cured with intact tops, was greater than that of machine-harvested onions, when harvested before any of the tops were down, but sugar concentrations at later maturities were similar. Onions that were harvested when < 13% of the tops were down showed greater dry weight in hand-harvested than machine-harvested bulbs.
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