Seasonal fluctuations in cotton seedling pathogens in three west Tennessee soils

Author

Danna Darlene Baird

Date of Award

12-1975

Degree Type

Thesis

Degree Name

Master of Science

Major

Agricultural Biology

Major Professor

Leander F. Johnson

Committee Members

H.E. Reed, J.W.Hilty

Abstract

The total number of Pythium Isolates found had a significant seasonal variation in incidence. P. ultimum also showed significant seasonal variation. The genus Fusarium was found to have a highly significant seasonal variation. Only one pathogen, a mycelial form of Pythium not producing sexual spores, had a significant variation with regard to soil type. Of all discolored hypocotyls there was a significantly greater incidence in soils not cropped to cotton than in soils cropped to cotton. Thielaviopsis showed a reversal of this trend and had a significantly greater incidence in soils cropped to cotton than in soils not cropped to cotton.

Recommended Citation

Baird, Danna Darlene, "Seasonal fluctuations in cotton seedling pathogens in three west Tennessee soils. " Master's Thesis, University of Tennessee, 1975.
https://trace.tennessee.edu/utk_gradthes/8122