1. University of California at Davis, Horticulture and Agronomy Graduate Group, 1 Shields Avenue, Davis, CA, USA
2. University of California at Davis, Department of Plant Sciences, 1 Shields Avenue, Davis, CA, USA
3. University of California at Davis, Agricultural and Environmental Chemistry Graduate Group, 4117 Meyer Hall, Davis CA, USA
4. Cooperative Extension, Division of Agriculture and Natural Resources, University of California, 133 Aviation Blvd., Suite 109, Santa Rosa CA, USA
5. New Zealand Institute for Plant & Food Research Limited, Old Mill Road, RD3, Motueka, New Zealand
6. USDA-Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center 9611 South Riverbend Avenue, Parlier CA, USA