Effect of Harvest Date on Yield and Grade Distribution Relationships for Pickling Cucumbers Harvested Once-over1

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Abstract
Pickling cucumbers (Cucumis sativus L.) were harvested once-over at 24-hour intervals for periods of from 6-11 days over a 3-year period to study the effect of harvest date on yield, average crop value, and grade distributions, and to identify criteria that could be used to identify optimum harvest date in the field. The relationship between yield (MT/ha) and average crop value ($/MT) was linear (R2>.90) indicating that average crop value would be a satisfactory criterion to indicate optimum harvest date. The relationships between yield and grade 1 and grade 5 cucumbers (% by number and by weight) and grade 4 cucumbers (% by number) were also linear (R2>.68) indicating that these measures of grade distribution could also be used to indicate optimum harvest date. The relationship between yield and % by weight and by number of grade 2 and 3 cucumbers did not follow a consistent pattern and were not considered to be satisfactory indicators of optimum harvest date.

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