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… Continue reading “Sorry if this is a rubbish question”
“Do the MLSN guidelines use 17 essential nutrients?” a friend asked me last month. “I’ve found a couple good articles but 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. I can explain the 17 and you’ll be an expert.” Here’s… Continue reading 17 essential nutrients?
Jon Scott wrote to me about my recent post on a poor way to fertilise. “While this superintendent has solved his problem of nitrogen input by monitoring salinity level that has worked for him, this is probably a very unique situation. It may be relevant to other golf courses where similar salt levels exist, but… Continue reading “Don’t try to jump on his bandwagon”
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. So he’s found a number… Continue reading “Is there a particular reason why you think it’s a poor way to fertilise?”
I was having a discussion about this last week. “I think it is a tiny amount,” I said, “although sometimes I hear really large amounts when people tell me how much N comes in rain. I’ll be sure to look it up.” I just looked it up, and it is generally a small amount, although… Continue reading How much N is in rain and snow?
I’d like to make three points. 1- Surfaces can be great, and the roots can be negligible. If the objective of greenkeeping work is to produce the desired surface, then one only needs enough growth to produce that surface. One also only needs enough roots to produce that surface. Any aboveground growth beyond that required… Continue reading Of turf, roots, and fertilizer
Brad Revill wrote about his use of the MLSN guidelines, some of the adjustments he has made, and reports on how it is working. “So it has been around 8 months since we started following the MLSN guidelines and we have been very happy with the results, not just from a turf performance point of… Continue reading “It has been around 8 months since we started following the MLSN guidelines and …”
I was in Sydney, Adelaide, and Brisbane this week to discuss the MLSN approach to soil test interpretation in four seminars organized by Living Turf. In these seminars, I explained that the use of the MLSN guidelines is as simple as planning how many beers to buy for an upcoming party. And at this party,… Continue reading Soil test interpretation and more: 4 seminars in Australia
I taught two seminars yesterday at the Philippine Golf Course Management conference. The first was about irrigation water requirement. The slides are here, and I made this Shiny app with data from 2013 through 2016 for Manila, Cebu, and Baguio. In the second presentation I spoke about MLSN after 5 years. I explained what soil… Continue reading MacKenzie’s fundamental principle of greenkeeping
Not everyone understands how the MLSN guidelines work. I saw a recent conversation started by Andrew McDaniel followed by a number of posts from STSAsia exhibiting confusion on the latter’s part about the use of the MLSN guidelines. To paraphrase Brian Ripley, “Once you appreciate that you have seriously misread the guidelines, things will become… Continue reading An MLSN Refresher