Petroleum coke-based bricks for frost protection
AuthorsR. A. Parsons
H. B. Schultz
L. A. Lider
Authors AffiliationsRobert A. Parsons is Extension Agricultural Engineer, University of California, Davis; Herbert B. Schultz is Professor of Agricultural Engineering, University of California, Davis; Lloyd A. Lider is Associate Professor of Viticulture and Enology, University of California, Davis.
Hilgardia 21(1):12-13. DOI:10.3733/ca.v021n01p12. January 1967.
Recently a new family of frost protection devices has become available. Heaters are now being made from petroleum wax or coke and molded in various forms, such as candles, bricks or flat trays. Because these devices have a much lower heat output per unit than conventional heaters, and information about their protection ability is limited, preliminary tests were initiated to learn more about this type of heating.
Also in this issue:Mass culture of California red scale and its golden chalcid parasites
Pre-emergence herbicides for weed control in walnuts
‘Swan Hill’… a new ornamental fruitless olive for California
Cypress bark moth on Monterey Cypress
Using physical soil amendments, irrigation, and wetting agents in Turfgrass management
Comparison of two soil amendments for carnation production
A comparison of high energy and normal diets for young dairy animals