Source of Inoculum, Yield and Quality of Tomato as Affected by Leveillula taurica

Author

• Wayne B. Jones, Utah State University

Date of Award:

5-1984

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Plants, Soils, and Climate

Committee Chair(s)

Sherman V. Thomson

Committee

Sherman V. Thomson

Abstract

Tomato transplant stock from southern Nevada served as a source of inoculum and developed disease symptoms of tomato powdery mildew approximately three weeks before Utah-grown transplants. Plants from Nevada and Utah were equally infected seven weeks after planting and no differences in severity or yield were detected at the end of the season due to rapid spread of the fungus. Tomato yields were reduced ca 40% in check plots when compared to plots treated with triadimefon, propiconazol or sulfur. The amount of sunburned fruit in check plots was three to four times greater than in plots where the disease was controlled. Yields from benomyl and dinocap treatments were no better than check plots. Leveillula taurica also infected Solanum nigrum L. and Physalis subglabrata Mack. and Bush.

Recommended Citation

Jones, Wayne B., "Source of Inoculum, Yield and Quality of Tomato as Affected by Leveillula taurica" (1984). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 9088.
https://digitalcommons.usu.edu/etd/9088