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Full-Text Articles in Life Sciences
Late Fall Fertilization Of Kentucky Bluegrass, David J. Wehner, Jean E. Haley, Dennis L. Martin
Late Fall Fertilization Of Kentucky Bluegrass, David J. Wehner, Jean E. Haley, Dennis L. Martin
Office of the Dean (CAFES) Scholarship
Many turfgrass managers apply a portion of the total yearly N to cool-season turfgrasses in the late fall (November). The purpose of this field study was to compare fertilization programs with and without N applications in November using both slow-release and soluble N sources. Turfs of two different cultivars of Kentucky bluegrass (Poa pratensis L. cv. Baron and cv. Newport) growing on a Flanagan silt loam (fine, montmorillonitic, mesic Aquic Argiudoll) received 10 fertilization programs utilizing urea, isobutylidene diurea (IBDU), or sulfur-coated urea (SCU). Urea was applied four times per year with either a spring application or a late-fall application …
Heat Tolerance Of Kentucky Bluegrass As Influenced By Pre- And Post-Stress Environment, David J. Wehner, D. D. Minner, P. H. Dernoeden, M. S. Mcintosh
Heat Tolerance Of Kentucky Bluegrass As Influenced By Pre- And Post-Stress Environment, David J. Wehner, D. D. Minner, P. H. Dernoeden, M. S. Mcintosh
Office of the Dean (CAFES) Scholarship
An understanding of the natural variation in heat tolerance of Kentucky bluegrass is needed to develop predictive models for stress tolerance. The variation in heat tolerance of ‘Adelphi’ Kentucky bluegrass (Poa pratensis L.) over the growing season and the effect of recovery environment on the perceived heat tolerance of the plants was determined. Field-grown plants (Chillum silt loam, fine-silty, mixed, mesic Typic Hapludults) were exposed to heat stress on 11 dates over two growing seasons by immersion in a water bath for 30 min at either 42, 44, or 46°C and then placed in either a greenhouse, or one of …