OM246

I was teaching a seminar about the distinction between soil organic matter (humus) and total organic material, and how to make use of those test results, when this question was posed:

プレゼンテーション資料は上記の PDF リンクから入手してください。 OM246 の詳細については、このプレゼンテーションを参照してください。 WinterTurf 日本語のATCアップデートのメーリングリストに参加を申し込む. 申し込む. Download the slides from this presentation at the PDF link above. See more about OM246 testing, including sampling instructions and a sample report, at the OM246 project page.

The key thing about OM246 testing for total organic material is that the sample is handled and measured to explicitly include all the living and dead undecomposed plant material in the sample.

プレゼンテーション資料は上記の PDF リンクから入手してください。 ATC の OM246 Web ページには、このテストに関する詳細情報が記載されています。 OM246 サンプリング手順 日本語のATCアップデートのメーリングリストに参加を申し込む. 申し込む. Download the slides from this presentation at the PDF link above. See more about OM246 testing, including sampling instructions and a sample report, at the OM246 project page.

I have a suggestion. Turfgrass managers do a lot of work for the purpose of organic matter management. We teach seminars, or sit through seminars, about managing organic matter. When referring to organic matter, or contemplating its management, I think people in the turfgrass industry tend to lump together all the organic materials, the humus and the dead roots and the decomposing leaf sheaths and leaves and rhizomes, and the living parts of the grass plants that happen to be underground.

These are the slides and supplementary links for my presentations at the 2023 Manitoba Golf & Turf Conference. Slides on Systematic improvement of course conditions, 11.5 MB PDF file Slides on Soil organic matter by depth, 8.

Many podcasts go on for hours. Mine often do. But this one is only 20 minutes, and for information density—a lot of useful insight in a short time—this particular episode is hard to beat.

These questions came by email. After watching the ATC Office Hours autumn 2022 OM246 review (and other ATC content) I had a few questions. I have researched and studied two specific items but couldn’t find the exact answer to what I was looking for.

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.

I use the turfgrass growth potential (GP) all the time. I make use of the GP for all kinds of things, like predicting sand topdressing amounts, comparing locations, predicting nutrient use, checking overseeding dates, estimating mowing requirements, and many more.