The influence of different concentrations of a film- forming antitranspirant (Wilt-Pruf ) on the transpiration rate of young apple trees (Ml06) was studied. One-year-old Mailing 106 trees were potted in 10.2 em (4 inch) metal pots. The plants were placed in a controlled environmental chamber during the study period. Sufficient reductions in water loss resulted with all concentrations of Wilt- Pruf with a 63 percent reduction at the highest concentration. Phytotoxicity was not observed though the higher concentrations imparted a sticky film to plants and they appeared to be lighter green at the end of the test. The effect of Wilt-Pruf on four-year old apple trees (Golden Delicious) was conducted in August 1977 at Utah State University Experimental Farm i n Farmington, Utah. The resistance to water vapor diffusion from the leaves was increased on both Wilt-Pruf treated irrigated and unirrigated trees, and water balance was improved, increasing leaf and stern water potential. The improved water balance of treated apple trees resulted in fruit size increase . The higher concentration of antitranspirant in both irrigated and unirrigated apple trees resulted in a higher leaf temperature than the irrigated control.
| Identifer | oai:union.ndltd.org:UTAHS/oai:digitalcommons.usu.edu:etd-4404 |
| Date | 01 May 1979 |
| Creators | Nammah, Hassan A. |
| Publisher | DigitalCommons@USU |
| Source Sets | Utah State University |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | All Graduate Theses and Dissertations |
| Rights | Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact Andrew Wesolek (andrew.wesolek@usu.edu). |
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