New, Easy-To-Harvest Raisin Grape Reduces Production Cost

Dec 08, 2016

By Dennis O'Brien

A new raisin grape developed by Agricultural Research Service (ARS) scientists in California is proving to be very popular among producers because it costs less to harvest.

With many grapes, crews must go out about two weeks before the harvest and cut the canes, which are the long branches on the vines that actually produce the grapes. Once the canes are cut, the grapes begin to wilt so they can be shaken into trays later. Cane cutting costs about $130 per acre, which is roughly 36 percent of total harvest costs, according to Craig Ledbetter, an ARS plant geneticist at the San Joaquin Valley Agricultural Sciences Center.

The new "Sunpreme" raisin grape dries without cane cutting and could save millions of dollars in production costs. It grows well in the San Joaquin Valley, where roughly 200,000 acres of raisin grapes are produced each year. Sunpreme was bred and patented by now-retired ARS horticulturalist David Ramming. So far, five nurseries have licenses for the new green raisin grape, and some are already taking orders from grape producers, according to Ledbetter.

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