A previous post showed photosynthetically active radiation (PAR) data in units of daily totals—the daily light integral (DLI). That post included a chart with a locally smoothed regression line through it. Some feedback from that post prompted me to make some more charts with the same data. This time, I... [Read More]

Some of you saw this film at its first screening during BIGGA’s National Regional Conference. On 8 December, the “Still Learning” film is coming to screens worldwide. And now, here is the official trailer. It hasn’t won any awards yet, but I’m starting with the thank you speech right now.... [Read More]

I’ve been using the NASA POWER agroclimatology data for a few projects. I get the data using the convenient nasapower R package by Adam Sparks. There is also a web-based map data access viewer. I’ve found these data really useful for a few particular things. To get solar radiation data... [Read More]

I collected a lot of soil samples this month. My standard procedure after collecting samples is to air dry them before sending to the lab. This is a dried sample from the top 2 cm (0.8 inches) of a Tifeagle bermudagrass putting green. Previous tests of this same green measured... [Read More]

Playability is what it is all about, isn’t it? At least for putting greens, one wants to have surfaces upon which the ball rolls at a certain pace, and which have a firmness that is appropriate for the conditions. This had been scheduled as an AGIF presentation for 10 December,... [Read More]