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Beth Guertal wrote to me a couple weeks ago: “I liked your Si blog post of recent date. It made me go back and find some data I collected once upon a while.

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.

The standard for measuring how much a turf sward is growing is to take the dry weight of the clippings mown off the turf. This isn’t a realistic option for routine turf management because who has drying ovens?

This question came some months ago: “I’m just pondering something about MLSN levels for Bent vs Poa and so hopefully you can clear it up. Having seen a bit of research coming out about k levels affecting disease pressure differently for poa and Bent does that not mean there should be two different MLSN’s for the two species?

Once upon a time,1 Paul Robertson asked if anyone was using a Pelzmeter to measure green speed. a long discussion followed, and the notifications on my Twitter account blew up.

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.

“Do the MLSN guidelines use 17 essential nutrients? I’ve found a couple good articles,” my friend wrote, “but I couldn’t really find a number on the MLSN website.” “That’s an interesting question,” I replied, “and I may answer it on my blog.

When I read Jason Haines’ interesting post about clipping yield, soil mineralization, and disease rates and came to the part where he said measuring all the greens was more valuable than he expected, I was glad to read that.

I saw a video with the question “what is your favorite fertility practice?” That segment starts at the 2:00 mark. Then on Twitter I saw some comments about how funny the answers to that question were.

A correspondent wrote: I’m hoping to get your thoughts on something I came across today. I was discussing greens fertilising whilst at a friend’s course this morning. He went on to get his new toy, the […] He’s started to use the salinity level reading as an indicator to fertilise.