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soil test
Soil tests
We provide soil testing services for clients around the world through Brookside Labs, and have an active research program in the area of turfgrass nutrition, soil and plant analysis, and sampling methods.
MLSN
Minimum levels for sustainable nutrition—MLSN—is a modern method for interpreting soil tests for turfgrass.
Global Soil Survey
A project that investigated soil nutrient levels of good-performing turf all over the world.
OM246
Measure exact topdressing effect, and requirement, by checking total organic matter by depth.
Soil sampling and interpretation questions: OM246 & MLSN
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.
Micah Woods
2023-01-18
8 min read
How much did the grass grow underground?
I spent a couple hours today collecting total organic material (OM246) samples and soil nutrient samples. When this Tifeagle bermudagrass green was tested for total organic material twelve months ago, the OM2 (total organic material in the top 2 cm) was 11.
Micah Woods
2022-11-22
2 min read
Estimated nitrogen mineralization from soil organic matter
This topic—carbon in turfgrass soils—was the subject of a Frankly Speaking podcast episode. One of the topics host Frank Rossi spoke about with guests Drs. Claire Phillips and Alec Kowalewski was the nitrogen mineralized from soil organic matter.
Micah Woods
2022-10-30
3 min read
One reason why I recommend annual soil testing of sand rootzones
I recommend annual soil testing of professionally-managed turfgrass grown on sand rootzones. For turf growing in soil, I don’t mind testing every two or three years. But sand rootzones usually aren’t very well buffered and important soil properties can change rapidly.
Micah Woods
2022-10-24
1 min read
P fertilizer recommendations as a 2x to 18x multiple of MLSN
After I wrote this post about the differences in P fertilizer recommendations when using different methods for soil test interpretation, I heard from some readers that it seemed I was taking something simple—MLSN—and making it seem complicated.
Micah Woods
2022-10-16
1 min read
Reminder to air dry soil samples
I air dry soil samples before sending them to a lab for analysis. The effect of this drying is to stop soil microbial activity and to stop ion exchange reactions. Allowing the samples to air dry also reduces the mass of the sample prior to shipping.
Micah Woods
2022-09-12
3 min read
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