Here’s another interesting article I came across recently. Dr. Carrow wrote an article in the October 1993 issue of GCM with the title Eight questions to ask: evaluating soil and turf conditioners. The article is about products, and deciding if they are required. It includes plenty of examples. The very... [Read More]

A couple weeks ago I was preparing for a seminar in which I discussed Charles Vancouver Piper and the early days of turfgrass science in the United States. I recalled—or quite possibly I misremembered, as I haven’t been able to find it yet—having read some years ago something by Piper... [Read More]

The normal range of calcium (Ca) in irrigation water is 20 to 60 ppm. That comes right from Penn State’s Irrigation water quality guidelines for turfgrass sites. Were you surprised by the previous post that worked out daily Ca use by the grass, and Ca added in irrigation water, to... [Read More]

These are some key things I’ve learned after studying organic matter (OM) for a few years. This is about organic matter in the context of playing conditions—how a ball reacts when it hits the surface. And this is also about the maintenance done to manage organic matter, like sand topdressing,... [Read More]

Did you see where soil potassium (K) only went down by 1 ppm after 374 mm (14.7 inches) of rain? In that same comparison of pre- and post-rain samples, the soil calcium (Ca) went down by 26 ppm. The Mehlich 3 Ca was 666 ppm in the sample collected on... [Read More]