Acaricides on apples and pears: Tentative ratings of II acaricides given for spider mite control in northern California for 1953 season
AuthorsArthur D. Borden
Authors AffiliationsArthur D. Borden is Entomologist, University of California, Berkeley; Harold Madsen is Assistant Entomologist, University of California, Berkeley.
Hilgardia 7(4):6-13. DOI:10.3733/ca.v007n04p6. April 1953.
Season to season variance in the effectiveness of new chemicals—used as acaricides for spider mite control on apples and pears in northern California—makes it necessary that only tentative toxicity ratings of the acaricides be listed following each season's field investigations.
Also in this issue:National and farm incomes: Time-element in relationships of incomes of economic segments and the national income in periods of change
Orchard sprinkler irrigation: Studies show supply of readily available soil moisture more important for fruit growth than type of irrigation
Alfalfa hay quality: Leaf shatter loss greatest when hay is handled at low moisture content
DDT resistant leafhoppers: Malathon outstanding for grape leafhopper control in tests in areas where DDT resistance was present
Cyclamen mite on strawberry: Successful control by use of natural enemy of pest possible as indicated by results of field investigations
Nematode on cotton: Root-knot nematode control by soil fumigation profitable in Kern County
Systox on cotton: Systemic insecticide successful in southern California control tests
Walnut aphid study: Shows systox promising material for conditions in northern California
Pests of red kidney beans: Increased yields resulted from proper timing and application of control treatments tested in 1952 trials
Efficiency in fruit marketing: Costs of dumping field lugs and receiver-trucking costs studied in relation to packing-house methods
Injurious effects of manganese and iron deficiencies on the growth of citrus