The University of California Cooperative Extension has completed four new cost-of-production studies for growing organic walnuts, conventional walnuts, prunes (dried plums), and rice.

Each analysis is based upon a hypothetical farm operation using practices common in the region. UC Cooperative Extension farm advisors, researchers, growers, farm accountants, pest control advisers, industry consultants and other agricultural associates provided input and reviews. Assumptions used to identify current costs for the individual crops, material inputs, cash and non-cash overhead are described. An analysis table shows profits over a range of prices and yields. Other tables show the monthly cash costs, the costs and returns per acre, hourly equipment costs, and the whole farm annual equipment, investment, and business overhead costs.

The new cost studies are:

· Sample Costs to Produce Organic Walnuts, North Coast by UCCE farm advisor Rachel Elkins, UCCE specialist Karen Klonsky, and research associate Richard De Moura

· Sample Costs to Establish a Prune Orchard and Produce Prunes, Sacramento Valley by UCCE farm advisors Franz Niederholzer, William Krueger, and Richard Buchner, UCCE specialist Karen Klonsky, and research associate Richard De Moura

· Sample Costs to Establish a Walnut Orchard and Produce Walnuts, Sacramento Valley by UCCE farm advisors William Krueger, Richard Buchner, John Edstrom, and Janine Hasey, UCCE specialist Karen Klonsky and research associate Richard De Moura

·Sample Costs to Produce Rice, Sacramento Valley by UCCE farm advisors Randall Mutters and Christopher Greer, UCCE specialist Karen Klonsky, and UCCE staff research associate Pete Livingston

The cost studies are available online at http://coststudies.ucdavis.edu/, at county UCCE offices, by mail from the University of California, Department of Agricultural and Resource Economics, One Shields Ave., Davis, CA 95616, or may be requested by calling (530) 752-1517. Internet downloads are free. There is a $3 handling fee for each mailed report.