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Influence Of Prestress Environment On Annual Bluegrass Heat Tolerance, Dennis L. Martin, David J. Wehner
Influence Of Prestress Environment On Annual Bluegrass Heat Tolerance, Dennis L. Martin, David J. Wehner
Office of the Dean (CAFES) Scholarship
Annual bluegrass (Poa annua L.) turf quality is reduced during periods of high temperature. To predict heat stress injury and develop improved prestress maintenance practices, an understanding of the seasonal variation in annual bluegrass heat tolerance and the influence of soil moisture on heat tolerance is crucial. Annual bluegrass growing in the field on a Drummer silty clay loam (fine silty, mixed, mesic Typic Haplaquolls) was sampled on 23 dates over two growing seasons and brought to a laboratory for exposure to high temperature. Prestress environmental conditions (air and soil temperature, soil matric potential, plant water potential, daylength, rainfall and …