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fertilizer
Best time of the year to soil sample
My advice is to test for soil nutrients at the time of the year when nutrient levels are likely to be at their lowest. In temperate climates in which there is some precipitation during the summer, then this is an autumn timing.
Micah Woods
Last updated on 2023-05-20
2 min read
Best judgment of the agronomist
Here are direct quotes from books and articles over the past 50 years. Do you notice a trend here? Actually, trend might not be the correct word. I’ll rephrase it like this: do you notice the persistence of an unsolved problem?
Micah Woods
Last updated on 2026-05-24
4 min read
K fertilizer and more snow mold
Doug Soldat has been posting these spectacular photos every year. See the “related posts” section at the bottom for more of these from past years. When he shared this one, he wrote “stop me if you’ve heard this one before.
Micah Woods
Last updated on 2023-01-24
1 min read
Is two tenths of a pound of nitrogen a lot, or a little?
A pound of nitrogen. That’s a substantial amount of N, right? Apply a pound of N in a single application and that’s going to create a lot of growth—way too much growth in most cases—and may lead to some thatch production.
Micah Woods
Last updated on 2023-01-10
2 min read
Park Grass photos
Have you heard about the Park Grass experiment? The one that started in 1856 with different fertilizer treatments applied to a hay meadow in England, with those fertilizer treatments applied year after year to see what happened to hay yields?
Micah Woods
Last updated on 2023-06-05
2 min read
Fertilizer recommendations by three different methods: SPF, SLAN, and MLSN
Daniel Hahn and Romain Giraud wrote an article on LinkedIn about fertilisation decisions based on MLSN and STERF’s precision fertilisation (SPF). If you are at all interested in this topic, I hope you’ll read their article.
Micah Woods
Last updated on 2022-10-11
4 min read
Normal manganese (Mn) levels in soil and turfgrass leaf tissue
I wrote an update about normal manganese (Mn) levels in soil and in turfgrass leaves. Mark Smith posted about Mn with some extraordinarily verdant grass and attributed the color to Mn.
Micah Woods
Last updated on 2022-07-31
1 min read
The least enjoyable experiment ever
I usually enjoy doing experiments. But there’s one that I helped out with as a graduate student that wasn’t any fun at all. Dr. Frank Rossi wrote about this in Effects of microbial and organic products on putting green performance.
Micah Woods
Last updated on 2022-07-10
4 min read
Survey results: fertilizer recommendations as ratios, percentages, or neither
I asked a question in the MLSN newsletter1 — when getting a recommendation for nutrients, would it make more sense to have that recommendation expressed as a ratio or as a percentage?
Micah Woods
Last updated on 2022-06-21
1 min read
A hypothesis about the fecundity of Zoysia
Have you ever seen seedheads on zoysia? Have you ever planted zoysia sod and seen a lot of seeds on some pieces but not on others? I’ve seen this a lot, and I’m not the only one.
Micah Woods
Last updated on 2026-05-24
2 min read
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