Winter Kill. Eliminating the myth of covering greens All information gathered from the USGA, and the following Universities Florida Arizona Clemson. Overview of Topics. Low temperature stress Important temperatures Turfgrass susceptibility to low temps
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1. Intracellular – Intracellular freezing causes ice formation inside cells, which occurs when cells are hydrated (not hardy), and a rapid drop in temps occurs. Most common in low, poorly drained areas, and is always fatal to the plant.
2. Extracellular – Occurs when ice forms between cells. Routinely occurs in the temperate zone when temps drop below freezing. If temps stay cold for a long period of time, cells can become dehydrated to a point where injury or death results. Turf grown on sandy soils with low mowing heights is more susceptible.
Freeze and thaw frequency
Freeze and thaw rate
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