Russeting of bartlett pears: Investigation in two areas showed copper dusts applied for blight control not cause of russeting in orchards studied
AuthorsRichard W. Harris
William H. Griggs
Authors AffiliationsRichard W. Harris is Assistant Professor of Pomology, University of California, Davis; William H. Griggs is Associate Professor of Pomology, University of California, Davis.
Hilgardia 9(3):5-6. DOI:10.3733/ca.v009n03p5. March 1955.
Bartlett pears—in a Placer County foothill orchard and in a Sacramento Valley orchard—were equally russeted in 1954, whether they developed on trees dusted with copper, sprayed with streptomycin, or given no blight control treatment during the blossoming period.
Also in this issue:Costs of field packing lettuce: Comparative study made of three methods of field packing lettuce in Salinas-Watsonville area for interstate shipments
Prices and marketing margins: Studies show how retail stores price their fresh citrus, and what it means to growers, distributors, and consumers
Navel orangeworm: Field control of walnut pest in northern California aided by restrictive measures
Burning and soil fertility: Greenhouse tests with lettuce and barley indicate nutrient content of forest soils increased by prescribed burning
Khapra beetle control studies: Preliminary results of tests with fumigants and dust give promise of effective treatments against destructive pest
Water quality in rice fields: Studies of possible causes of poor rice stands indicate level of total salts content of water influences growth and yield
Crown and root rot of alfalfa: New disease of alfalfa caused by water mold found to be component of the crown and root rot complex
Westside dust plots: Test plantings show some promise as means of reducing dust problem
Index of orange fruit maturity: Compositional changes in the juice of Washington navel and Valencia oranges studied during development and ripening
Fluorine toxicity in citrus: Growth retardation and leaf tip-burn accompanied increased fIuorine concentrations in experimentaI laboratory cultures
Copper content of citrus leaves and fruit in relation to exanthema and fumigation injury
Physiological gradients in citrus fruits