I travel the Midwest with a Turf-Tec Toma Shear Strength Tester. Why? I use it as a tool to compare the strength of turf across all sports. Here are a few recent findings:
St Luke Catholic Church - Patriot Bermudagrass Sod - June 2012 - 25 ft. lbs:
DePauw Soccer - Riviera Bermudagrass Seed - May 2012 - 15 ft. lbs:
DePauw Field Hockey - Patriot Bermudagrass Sprigs - June 2011 - 25 ft. lbs:
Needless to say, a seeded field is weaker than a sodded field during the first year of play. Secondly, a field that is in its second year is as strong as a newly sodded field.
A "normal" blue/rye field will test 15-20 ft lbs. A "normal" bermudagrass field after a year of establishment will test 25-35 ft lbs. So, the first year of a seeded/sprigged field will act more like a cool season turf in regards to shear strength. The second year will produce a field with superior shear strength.
Look for a post from St Luke tomorrow with photos of play after 3 inches of rain......