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Browsing by Author "Su, Kemin"

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Effects of high temperature and drought on a hybrid bluegrass compared with Kentucky bluegrass and tall fescue

Su, Kemin; Bremer, Dale J.; Keeley, Steven J.; Fry, Jack D. (2007)

High temperature and drought stresses may reduce quality in cool-season turfgrasses during summer months in the transition zone. This growth chamber study was conducted to evaluate effects of high temperature and drought ...
Mowing and drought effects on a hybrid bluegrass compared with a Kentucky bluegrass

Su, Kemin; Bremer, Dale J.; Keeley, Steven J.; Fry, Jack D. (2009)

Hybrid bluegrasses (HBG) resemble Kentucky bluegrass (Poa pratensis L.)(KBG) but HBG may have greater heat and drought tolerance. Little is known about the performance of HBG under low mowing heights and during drought. A ...
Performance of Texas bluegrass hybrids in the transition zone

Su, Kemin (Kansas State University, 2007)

High temperature and drought may reduce quality in cool-season turfgrasses during summer in the transition zone. Texas bluegrass hybrids (HBG) are genetic crosses between native Texas bluegrass (Poa arachnifera Torr.) and ...
Relationships between NDVI and visual quality in cool-season turfgrass: I. Variation among species and cultivars.

Bremer, Dale J.; Lee, Hyeonju; Su, Kemin; Kelley, Steven J. (2011)

Canopy spectral reflectance may provide an objective means to evaluate visual quality of turfgrass, but evaluations of visual quality may be confounded by differences in reflectance among species or cultivars. In this 3-yr ...
Relationships between NDVI and visual quality in cool-season turfgrass: II. Factors affecting NDVI and its component reflectances.

Bremer, Dale J.; Lee, Hyeonju; Su, Kemin; Keeley, Steven J. (2011)

Normalized difference vegetation index (NDVI, computed as [near infrared (NIR) – Red)]/[NIR + Red]) may provide an objective means to evaluate visual quality of turfgrass. The NDVI is influenced by red (visible) and NIR ...
Relationships between NDVI and visual quality in turfgrasses: Effects of mowing height

Lee, Hyeonju; Bremer, Dale J.; Su, Kemin; Keeley, Steven J. (2011)

Canopy spectral reflectance may provide an objective means to evaluate visual quality of turfgrass, but evaluations of quality may be confounded by cultural practices that affect refl ectance, such as mowing height. ...
Rooting characteristics and responses of photosynthesis to irrigation deficit of two hybrid bluegrasses, Kentucky bluegrass, and tall fescue

Su, Kemin; Bremer, Dale J.; Keeley, Steven J.; Fry, Jack D. (2008)

Drought stress is common among cool-season turfgrasses during summer in the U.S. transition zone. A two-year field study was conducted near Manhattan, Kansas, USA, to evaluate rooting characteristics and effects of drought ...

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