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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
121

Evaluation of Materials for Control of Citrus Thrips

Butler, Marvin, Byrne, David N. 12 1900 (has links)
The control of citrus thrips is a major concern for citrus growers in the Yuma area. Five materials were evaluated for control of citrus thrips on Lisbon lemons at the Yuma Mesa Agricultural Center during July and August of 1985. Although there was no statistically significant differences between treatments, Mavrik appeared to provide the best control of the materials tested. Dimethoate (Cygon) and formetanate hydrochloride (Carzol) were not tested.
122

Distribution of Two Species of Phytophthora Within the Citrus Acreage in Arizona

Matheron, M., Matejka, J., Bacon, D. 12 1900 (has links)
Pkvtophthora citrophthora and P. parasitica cause gummosis and root rot of citrus trees in Arizona. A disease survey was initiated to determine the relative distribution of each pathogen within the citrus acreage of Maricopa and Yuma Counties. Both pathogens were recovered at the same time from 75% and 17% of orchards containing Phytophthora in Maricopa and Yuma County, respectively. P. citrophthora alone was found in 15% of the groves containing Phytophthora in Yuma County, while P. parasitica alone was detected in 25% and 68% of the citrus plantings containing Phytophthora in Maricopa and Yuma County, respectively. This survey will be continued for another year. The potential value of this information for improved disease control is discussed.
123

Gibberellic Acid Sizing Trial on Table Grapes, 1987

Butler, Marvin, Rush, Bob 12 1900 (has links)
No description available.
124

Photosynthetic Acclimation of Leaves of Three Apple Cultivars as Affected by Growth Under Full Sun or 85 Percent Shade and Subsequent Transfer to the Contrasting Light Regime

Moon, J. W. Jr., Fallahi, E., Jordan, K. 12 1900 (has links)
No description available.
125

Evaluation of Pyrenone and a Detergent for Jojoba Scirtothrips ewarti bailey Control

Rethwisch, Michael D. 12 1900 (has links)
No description available.
126

Evaluation of Insecticides and Oils for Jojoba Scirtothrips ewarti bailey Control

Rethwisch, Michael D. 12 1900 (has links)
No description available.
127

Evaluating the Potential Threat to Citrus Plantings from Phytophthora Parasitica Originating from Noncitrus Hosts

Matheron, M., Matejka, J. 01 1900 (has links)
The relative virulence of Phytophthora parasitica recovered from citrus and other plants to rough lemon was investigated Isolates of Phytophthora parasitica from citrus were highly virulent to rough lemon seedlings, causing crown rot and significant reduction of root weight. Isolates of the pathogen from noncitrus hosts caused slight damage to rough lemon, with no crown rot and only minor reduction of root weight. Evidently, isolates of P. parasitica from several noncitrus hosts do not pose a serious threat to citrus groves.
128

Gibberellic Acid Sizing Trial on Table Grapes, 1988

Butler, Marvin, Rush, Bob 12 1900 (has links)
No description available.
129

Effects of Gypsum Applications on Established Thompson Seedless Grapes

Doerge, Thomas A., True, Lowell, Kilby, Mike 12 1900 (has links)
No description available.
130

Control of Variegated Leafhopper, Erythroneura variabilis Beamer, By Insecticides

Rethwisch, Michael D., Butler, Marvin, Meadows, Mike 12 1900 (has links)
No description available.

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