The most advantageous time to pick raisin grapes for sun drying represents a compromise between two considerations: (1) The larger yields and better quality obtained from well-ripened fruit, and (2) The more favorable drying conditions early in the season.

California Agricultural Experiment Station Bulletin No. 683 discussing factors influencing the yield, composition, and quality of grapes may be obtained by addressing a request to University of California, College of Agriculture, Berkeley 4, California.