February 1957

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California Agriculture, February 1957

Volume 11, Number 2
Biological control of spotted alfalfa aphid

research articles

Peach tree borer control tests: Fall treatments with soil fumigants and use of trunk sprays evaluated in experimental program during the 1955–56 seasons
by Harold F. Madsen , Ross R. Sanborn
pp3-15, doi#10.3733/ca.v011n02p3
Summary | Expanded Abstract | PDF

Aphid resistance to parathion: Nonphosphate insecticides under study for control of spotted alfalfa aphid where pest develops resstance to parathion
by Vernon M. Stern , Harold T. Reynolds
pp4-14, doi#10.3733/ca.v011n02p4
Summary | Expanded Abstract | PDF

Fungi on spotted alfalfa aphid: Spread of fungi by natural and artificial means is resulting in excellent biological control of aphid in many counties
by Irvin M. Hall , Paul H. Dunn
pp5-14, doi#10.3733/ca.v011n02p5
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Soil fumigation for nematodes: Nematocides tested for the control of root-knot nematodes affecting fresh market and canning tomato crops in California
by Bert Lear , Ivan J. Thomaason
pp6-16, doi#10.3733/ca.v011n02p6
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Codling moth infestations up: Damage to harvested walnuts increased markedly in northern California during the 1956 season in comparison with 1955
by A. E. Michelbacher , Stephen W. Hitchcock
pp7, doi#10.3733/ca.v011n02p7
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California scaly bark disease of citrus: No known cure for infected trees but treatment in early stages of disease can retard its advance into successive stages with their increasing economic loss
by Paul W. Moore , Edward Nauer , William Yendol
pp8-9, doi#10.3733/ca.v011n02p8
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Bartlett pears for canning: Ripeness of fruit at time of processing affects color, flavor, aroma, and over-all quality of finished product
by Sherman Leonard , Bor Shiun Luh , Elly Hinreiner , Marion Simone
pp10-15, doi#10.3733/ca.v011n02p10
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Citrus weed control by monuron: Experiments with urea herbicides for weed control in citrus orchards encouraging but use of the chemicals is restricted
by B. E. Day , R. C. Russell , C. D. McCarty
pp11-12, doi#10.3733/ca.v011n02p11
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Weed control near grass areas: Soil fumigants and contact spray materials included in series of studies on control of weeds in relatively confined areas
by M. H. Kimball , Boysie Day , Chester L. Hemstreet
pp13-14, doi#10.3733/ca.v011n02p13
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General Information

Agricultural-business outlook: Farmers must understand and apply economic principles to the business of modern agricultural production by scientific means
by Jerry Foytik
pp2, doi#10.3733/ca.v011n02p2
PDF