Topics in Subtropics

Vanessa Ashworth and Philippe Rolshausen, Department of Botany and Plant Sciences, University of California Riverside. Have you ever wondered where your favorite avocado variety came from? Not the nursery where it was purchased but the long, tortuous path that led to its selection.

The macadamia is native to Australia and has been grown in California continuously since 1879 (Arpaia 1994). In addition to the commercial growers, macadamias make excellent back yard trees, are beautiful as landscaping, and can be grown in tubs on your patio.

6 weekly classes and a Saturday Field Trip to the UC Cooperative Extension High Density Trial 2:00 4:00 pm, Wednesday afternoons located at the San Diego County Farm Bureau, 1670 E. Valley Parkway, Escondido CA 92027 Instructor: Gary Bender Ph,D.

We are creatures of habit and when we see the effects of a treatment, we can often persist in seeing the same or similar symptoms and assuming the cause is the same. In a recent case, a newly planted Pixie' orchard, planted in August had gone into an old Valencia' ground.

Problem: There was a Valencia farmer in Ojai, farming on a rocky loam. More rocky than loam, on a 10 % slope, where he had been spraying the weeds down, the soil had gradually washed away and all he had left was scattered cobbles.