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Winter Head Lettuce in the Salt River ValleyJohnson, Stephen B. 09 1900 (has links)
This item was digitized as part of the Million Books Project led by Carnegie Mellon University and supported by grants from the National Science Foundation (NSF). Cornell University coordinated the participation of land-grant and agricultural libraries in providing historical agricultural information for the digitization project; the University of Arizona Libraries, the College of Agriculture and Life Sciences, and the Office of Arid Lands Studies collaborated in the selection and provision of material for the digitization project.
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The Arizona Lettuce Industry: Competition, Prices, Demand, Supply ControlFirch, Robert S., Mathews, Daniel W. 01 1900 (has links)
No description available.
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Growing Head Lettuce in ArizonaPew, W. D., Marlatt, R. B., Hopkins, L. 09 1900 (has links)
No description available.
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Lettuce Seed Production in ArizonaFoster, R. E., Van Horn, C. W. 04 1900 (has links)
No description available.
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Slowing Spread of Lettuce Infectious Yellows Virus with Stylet OilNelson, Merritt, Stowell, Larry J., Orum, Tom 05 1900 (has links)
Infection by lettuce infectious yellows vines was reduced in lettuce treated with stylet oil. There was a difference in the final infection level between treated and untreated blocks and reduced infection in early readings. Yields were slightly better in the treated blocks. It has not been determined if and under what conditions it would be feasible to use this treatment on a practical scale.
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Effects of Lettuce Insecticides Applied at PlantingRethwisch, Michael D., Meadows, Michael, Hagerman, Shari, Thiessen, James, McGrady, John 12 1900 (has links)
No description available.
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New Insecticide Alternatives for Aphid Management in Head LettucePalumbo, John, Mullis, Clayton Jr., Reyes, Francisco, Amaya, Andreas 02 1900 (has links)
Several new insecticide was compared to Admire and Provado combinations for management of aphids in head lettuce in Yuma in two trials conducted in 1998. Foliar applications of Provado, Fulllfill, Aphistar and Acetamiprid appear to provide an alternative method of controlling aphids on lettuce comparable to prophylactic applications of Admire. In addition, at planting and side dress soil applications of thimethoxam provided aphid control comparable to Admire. The prevention of aphid colonization in lettuce heads with the foliar alternatives may depend greatly on the timing and frequency of applications before harvest occurs. Residual activity of the new foliar alternatives ranged from at least 7-14 days. These studies suggest that more than one application of the foliar products will be necessary to adequately suppress aphid contamination in heads. Evaluations of thiamethoxam suggest that it is more mobile in the soil than Admire and may be a candidate for side dress applications for aphid management.
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Precision Planting LettuceHarriott, B. L. 08 1900 (has links)
Compared to current planting practices using naked lettuce seed, precision planting coated lettuce seed can result in substantially reduced thinning costs, increases in number of marketable lettuce heads per acre, and higher average head weight. The use of coated seed, however, requires more attention to seedbed preparation, planting depths, irrigation schedules, and stand maintenance. Hill - dropping naked seed does not appear to offer advantages over conventional planting practices except in a slight reduction of seed cost per acre.
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Lettuce Variety Trials in Cochise CountyOebker, N. F., Page, C., Foster, R. E., Bessey, P. M. 08 1900 (has links)
Lettuce varieties were compared in Cochise County for late spring and early fall harvests. The Great Lakes 659 types consistently performed as well as any in the trials for these times of year in this area.
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Sclerotiniose or Drop of LettuceStone, William J. H. 08 1900 (has links)
Preliminary tests have been initiated in a program for control of Sclerotiniose, or drop of lettuce. Damping-off problems are concurrently being investigated.
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