Strains of the Verticillium wilt fungus in California cotton
AuthorsW. C. Schnathorst
D. E. Mathre
Authors AffiliationsW. C. Schnathorst is USDA Research Plant Pathologist, and Associate in the Experiment Station; D. E. Mathre is Assistant Professor of Plant Pathology, University of California, Davis.
Hilgardia 21(3):4-5. DOI:10.3733/ca.v021n03p4. March 1967.
Cotton yields have progressively decreased in many fields in Tulare and Kings counties in the San Joaquin Valley since 1960. Losses have been attributed to new races of Verticillium albo-atrum, potassium deficiency, and a change in tolerance to Verticillium wilt in the Acala 4-42 variety (grown exclusively in the San Joaquin Valley since 1954 because of its wilt-resistance).
Also in this issue:Rapida… a new oat crop for California
Whitewash found harmless in applications on walnut leaves
Precision planting for cannery tomatoes
A progress report… olive yield decline study in Tehama County
Herbicides for control of annual weeds in California apples and pears
Control of powdery mildew on cantaloupe
Control of aphids on barley • economic treatment levels • analysis of yield increases
Lumber grade recovery in a circular-saw mill in California