Soil

More than a success story

This isn’t just a story about the fertilizer choices or the costs. There is a lot more to it, and I encourage you to read the entire post at Gulotti’s The Walking Greenkeeper blog.

I've been asked to give a seminar on MLSN guidelines

This inquiry came to my inbox: “I’ve been asked to give a seminar on MLSN guidelines for the [ ]. I intend to keep the explanation fairly simple. Are there any frequently asked questions that you have encountered that I could use in my presentations to help me make sure I’m explaining it clear enough … On a side note…I have been teaching this method of soil fertility interpretations for two years to my [ ] turf students and I can’t quite understand the resistance I get from superintendents….

"Percent base saturation seems not to be a particularly useful concept"

I saw a list of proposed topics for an upcoming turfgrass conference, and under the heading of soil fertility was included base saturation. I immediately thought of this paragraph from Murray McBride’s Environmental Chemistry of Soils:

MLSN in use: soil tests, fertilizer, and the results

When Andrew McDaniel wrote about #MLSN greens, I thought it may be interesting to show a few details of what this is about: These #MLSN greens are about to take 34 mows/21 rolls in 2 weeks.

An economic case study

When my friend wrote to ask if I could “write a brief description of MLSN,” I thought I might send along the article on turfgrass fertilization from the Green Section Record by Meentemeyer and Whitlark.

No matter how much sodium one puts into a sand rootzone, the soil structure cannot be affected, so gypsum won’t be required

I received this question about leaching salts from the rootzone: “I remember talking to you once before regarding flushing excess salts from the root zone and the application of gypsum or other calcium products before the flush and you telling me it was not necessary.

An MLSN Refresher

Not everyone understands how the MLSN guidelines work. I saw a photo shared by Andrew McDaniel followed by a number of replies from STSAsia exhibiting confusion on the latter’s part about the use of the MLSN guidelines.

Both of these are worth your time

One is an article, another is a podcast, and you won’t regret the time spent reading the first and listening to the second. First, the 4 November 2016 issue of the Green Section Record contains Managing Organic Matter in Putting Greens by Adam Moeller and Todd Lowe.

2 similar approaches to turfgrass nutrition, 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.

Is sodium an imaginary problem?

On sand putting greens, it is. The problem caused by sodium is a reduction in the downward movement of water in soils. This is caused by the deflocculation of clay in the soil.