California red scale: Study of prospects for biological control of pest in orange and lemon groves of San Diego County
Author AffiliationsPaul DeBach is Associate Entomologist, University of California College of Agriculture, Riverside.
Hilgardia 6(3):8-12. DOI:10.3733/ca.v006n03p8. March 1952.
Citrus growers in San Diego County have a very good chance—possibly the best chance of any citrus area—of obtaining biological control of the California red scale, Aonidiella aurantii (Mask.).
Also in this issue:California food industries: Study of their economic importance shows benefits from the use of chemicals in food production and processing
Rose clover as forage: Legume new to state responds to good grazing practices on annual type range, brush burns, and grain land
Field seeding of tomatoes: Survey in Yolo County investigates performance and problems encountered under commercial conditions
Harvesting canning tomatoes: Survey indicates immediate savings in labor requirements and harvesting costs possible by use of improved methods
Farm accounts aid management: Increasing capital required, higher costs, and smaller profit margin call for better financial records
Quick decline studies: Top-root relationships of citrus investigated in experiments to salvage susceptible orchard trees
Longevity of lemon trees: Long-term selection experiments indicate strains least likely to decline or develop shell bark
Methods for brooding chicks: Radiant panels, infrared lamps compared for electricity used, weight gains, feed needs, mortality, feathering
Fungus on codling moth: Fungus disease in over wintering stages of the walnut pest found to be an important natural controlling agent
Distribution of solid matter in thick and thin egg white
Measurement of deterioration in the stored hen’s egg
Variability of shell porosity in the hen’s egg