Wind machines cost analysis: Cost records studied for effectiveness of machines in frost protection, operation and maintenance
AuthorHarold E. Wahlberg
Author AffiliationsHarold E. Wahlberg is Farm Advisor and County Director of Agricultural Extension Service, Orange County, University of California College of Agriculture.
Hilgardia 4(11):13-13. DOI:10.3733/ca.v004n11p13. November 1950.
Conflicting reports on the effectiveness of wind machines—installed as a substitute for the artificial heating of citrus orchards—prompted a study of the efficiency of the machines, under Orange County conditions.
Also in this issue:Farm prices and production: Index numbers of prices received by farmers and of production indicate relative changes
Systemic insecticides: Control of plant feeding pests by poisoning plant juices studied
Olive flower-bud formation: Nutrients essential to tree during March and April when flower-buds are forming tests show
Analyses of irrigation water: Waters of six rivers and nine wells in California studied to establish their usefulness for irrigation
Smog in the south coastal area: Injury to herbaceous plants in the affected area found to be result of air pollution by gases and aerosols
Diagnoses of insect diseases: Microbial infections in insects diagnosed as part of the research in developing new ways of controlling crop pests
Orange fruit size: Five-year study of small fruit size covered 429 groves in six counties
Effects of various treatments on the carbon dioxide and oxygen in dormant potato tubers