UC Cooperative Extension | Agricultural Experiment Station

Shearing students, ranchers flock to livestock advisor Harper

John Harper gives sheep shearing pointers. Most of the sheep shearers currently working in California have graduated from his sheep shearing school, which started in 1993.

UCCE livestock advisor John Harper retires after 32 years "If you know how to shear, you'll never be poor," Stephany Wilkes remembers John Harper, University of California Cooperative Extension livestock and natural resources advisor for Mendocino and...

UC Delivers

California red scale is one of the key pests of citrus in California. This pest can damage and kill citrus trees when it attains very large populations, which is a rare occurrence. The more common economic damage results from these scale insects settling on the fruit, causing cosmetic flaws and a downgrading of the fruit. Significant economic losses from this cosmetic damage occur at much lower population densities than the high densities required to damage the trees. Consequently, there is a very low threshold for California red scale in citrus orchards. To keep populations below the threshold, growers have traditionally relied on high-volume sprays (up to 1,000 gallons per acre) of insecticides.

Read about: High-Pressure Washer Removes Red Scale for Citrus Fruits | View Other Stories

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