Quote:
Originally Posted by vinny
From Penn State Center for Turfgrass Science:
Thatch can have either beneficial or detrimental effects on turf depending on the amount present. For example, a thin layer of thatch in lawns (˝ inch or less) provides insulation against temperature extremes and fluctuations in soil moisture. Some thatch on sports turf (about ˝ inch) provides much needed resiliency, softens players’ impact on the surface, and improves footing. However, if your lawn has more than an inch of thatch, turf problems will likely result.
Excess thatch can increase pest problems by harboring large populations of disease-causing organisms and insects.
From an article by Rob Sproule:
The Damage They Do
Dew worms thrive in old lawns, especially those with decades of accumulated thatch.
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nope , sorry to say , your university book info is WRONG