University of California

Planting date effects on cotton in Imperial Valley


G. F. Worker
P. H. Van Schalk

Authors Affiliations

George F. Worker, Jr., is Associate Specialist, University of California, and Superintendent, Imperial Valley Field Station, El Centro; Peter H. van Schalk was Research Agronomist, Agricultural Research Service, USDA, Southwestern Irrigation Field Station, Brawley, California, and Associate Specialist, University of California, Davis, now Agronomist in Charge, USDA, Regional Pulse Improvement Projects, Teheran, Iran.

Publication Information

Hilgardia 20(3):4-5. DOI:10.3733/ca.v020n03p4. March 1966.

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Cotton lint yields of Acala 4–42, Deltapine Smooth Leaf, and Strain A decreased as planting was delayed after March 22, but an earlier planting (March 8) did not increase yields in tests at the Imperial Valley Field Station in 1962 and 1963. Gin turnout (expressed as percentage of lint) of Acala 4-42 increased slightly as planting was delayed, but decreased in Strain A and DPL-SL. There seems to be no advantage in planting cotton before March 20 in the southern part of Imperial Valley. The advancement of pink bollworm infestations in Arizona and Bard Valley, California, puts further emphasis on planting dates for help in control of this pest.

Worker G, Van Schalk P. 1966. Planting date effects on cotton in Imperial Valley. Hilgardia 20(3):4-5. DOI:10.3733/ca.v020n03p4
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