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Freeze Smothering (Ice) Intermittent ice formation on golf greens and fairways is a common event in northern Europe. Ice cover is often considered part of winter injury caused directly by a continuous ice cover or as part of freeze injury (low temperature kill) Read the Full Story

Freeze Injury Freeze tolerance of plants is not constitutive but induced in response to low, nonfreezing temperatures (< 50 F (10C). This process is known as cold acclimation, which occurs during the fall or early winter, and explains why a plant species growing at a warm temperature then exposed to freezing is killed, while that same plant exposed to a cold acclimation period prior to sub-freezing temperatures survives. Read the Full Story

Typhula Blight Typhula blight, also known as gray snow mold or speckled snow mold, is most severe under extended periods of deep snow that covers a wet turfgrass on unfrozen soil. The pathogen Typhula incarnata is most active when temperatures are 1-2 C. Grayish to straw colored circular patches ranging from 2.5 cm to 1 meter in diameter appear at snow melt. A grayish mycelium may be present infected turf, which gives it the grayish or speckled look. Read the Full Story

Seeing the Color Purple? The purple coloration of turf plants at this time of year may raise some concerns for turf managers, and it may have some justification. Read the Full Story

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Freeze Smothering (Ice)

Last Updated on Saturday, 04 February 2012 21:51 Written by Karl Danneberger

Intermittent ice formation on golf greens and fairways is a common event in northern Europe. Ice cover is often considered part of winter injury caused directly by a continuous ice cover or as part of freeze injury (low temperature kill)

Continuous Ice Cover Injury

The first type of ice injury is the direct result of a continuous ice cover often referred to as freeze smothering.

Freeze Injury

Last Updated on Monday, 30 January 2012 19:12 Written by Karl Danneberger

Freeze tolerance of plants is not constitutive but induced in response to low, nonfreezing temperatures (50 F (10C). This process is known as cold acclimation, which occurs during the fall or early winter, and explains why a plant species growing at a warm temperature then exposed to freezing is killed, while that same plant exposed to a cold acclimation period prior to sub-freezing temperatures survives.

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