High expectations

I’ve rarely been so excited to read an article. Last week when I saw Energy use and greenhouse gas emissions from turf management of two Swedish golf courses, by Tidåker et al., I immediately dropped what I was doing and read it. If you’ve talked with me about turfgrass management sometime in the past 18… Continue reading High expectations

New paper on variability of hybrid bermudagrass used on putting greens

If you work with warm-season grasses, you will want to have a look at this new paper by Reasor et al. on the variability of hybrid bermudagrasses used on putting greens. Ever see anything like this? Off-types growing in a green? Wondered if the off-types are contamination by a completely different grass, or if the… Continue reading New paper on variability of hybrid bermudagrass used on putting greens

The MLSN guidelines, data, and reproducible research

Our preprint on the MLSN guidelines is now available. It was published today at PeerJ Preprints, as Minimum soil nutrient guidelines for turfgrass developed from Mehlich 3 soil test results. We wanted to share what we have done so far, make this paper available for citation in case anyone needs to cite something more technical… Continue reading The MLSN guidelines, data, and reproducible research

High quality turfgrass is often produced in soils that don’t have enough nutrients to produce high quality turfgrass.

That's the first sentence of our article about the development of the MLSN guidelines, published today as a preprint at PeerJ Preprints. You can read the article there and find out how (and why) we developed the guidelines. We have also shared all the data used to develop the guidelines, and you can find the… Continue reading High quality turfgrass is often produced in soils that don’t have enough nutrients to produce high quality turfgrass.

Every spring when the snow melts …

I look forward to some photos from Doug Soldat. For the past three years, he’s had some fascinating photos to share of snow mold on creeping bentgrass. And each year, there was more snow mold where potassium fertilizer was applied, and less snow mold where potassium wasn’t applied. Spring of 2014 In the spring of… Continue reading Every spring when the snow melts …

“Knowing which soil test results are important can simplify turf management”

Bill Kreuser's guide to soil test interpretation; read it! Here's how he describes it: "While soil tests can be useful, their results are frequently overanalyzed and overinterpreted. Sometimes soil test results can be more confusing than helpful. It doesn't have to be so difficult. The goal of this publication is to explain which soil test… Continue reading “Knowing which soil test results are important can simplify turf management”

This is what PAR looks like

I downloaded NOAA quality-controlled data for Corvallis on 5 minute intervals. An analysis of these data, and a comparison to Ithaca, are in this report. These charts show the photosynthetically active radiation (PAR) by time of day, using the 2014 data. This is the photosynthetic photon flux density (PPFD) every 5 minutes on 13 June… Continue reading This is what PAR looks like

Soil test phosphorus in turf soils: 2 datasets

Landschoot et al. wrote about a large dataset of Mehlich 3 phosphorus data in Summary of Mehlich-3 P Data from Home-Lawn Soil Tests in Pennsylvania. How are the data distributed? The median of the Pennsylvania data is 57 ppm, and 40% of the samples are less than or equal to 45 ppm, which is the… Continue reading Soil test phosphorus in turf soils: 2 datasets

2 similar approaches to fertilization, with 1 notable difference

At first appearance, the demand-driven fertilization of STERF seems almost the same as the growth potential (GP) and MLSN approach. If you are not familiar with this approach from STERF, you can download their Precision Fertilisation — from theory to practice, written by Tom Ericsson, Karin Blombäck and Agnar Kvalbein. And I recommend you do… Continue reading 2 similar approaches to fertilization, with 1 notable difference