This year’s annual Desert Crops Workshop is scheduled for Dec. 7 at the Barbara Worth Golf Resort and Convention Center, Holtville, Calif.

Is the 15th annual event that alternates meeting sites between Arizona and Southern California each year.

It is co-sponsored by the University of Arizona, the University of California and Western Farm Press.

Registration begins at 7:30 a.m. and the program will continue through lunch. The workshop is free.

Here is a lineup of speakers and topics:

-- Susceptibility of Cantaloupe Varieties to Powdery Mildew and Monosporascus Vine Decline.--Tom Turini, UC Cooperative Extension, Imperial County.

-- Research Update on Melons and Ground Beetles -- Eric Natwick, UC Cooperative Extension, Imperial County.

-- Plant Growth Regulators and Desert Vegetables, Michael Rethwisch, UC Cooperative Extension, Riverside County.

-- Problems in Peppers? -- Jose Aguiar, UC Cooperative Extension, Riverside County.

-- Maximizing Lettuce Herbicide Performance, Barry Tickes, University of Arizona Cooperative Extension area agricultural agent, Yuma, Ariz. -- Update on Chemical Tools for Managing Downy and Powdery Mildew on Lettuce — Mike Matheron, Research Scientist, plant pathology, University of Arizona, Yuma Agricultural Center, Yuma, Ariz.

-- Aphids of Desert Lettuce -- John Palumbo, Research Scientist, entomology, UA, Yuma Agricultural Center, Yuma, Ariz.

-- Potential Perchlorate Exposure from Food and Feed Produced in the Low Desert -- Charlie Sanchez, director, Yuma Agricultural Center, Yuma, Ariz.

For additional information, contact Michael Rethwisch, UC Cooperative Extension, Riverside County, (760) 921-7884 or Tom Turini, UC Cooperative Extension, Imperial County, 760) 352-9474.