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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 material by depth.
A turf (and soil) paradox
The usual way of thinking about soil nutrients and turf quality is something like this: when the amount of a soil nutrient is low, the turf quality won’t be as good as it would be if that nutrient were more abundant in the soil.
Micah Woods
Last updated on 2024-07-10
8 min read
Reconstructing soil P from "disassembled" soil samples
This is one of the many interesting things I’ve been working on recently. A standard soil test for turfgrass is taken to a 10 cm depth (4 inches below the soil surface).
Micah Woods
2024-06-17
4 min read
Soil testing on the Cornell Turfgrass Show
Frank Rossi and Carl Schimenti had a discussion on the Cornell Turfgrass Show about soil testing, fertilizer, the Park Grass experiment, weeds, and some good ways to sell fertilizer. Also, that perennially hot topic of silicon.
Micah Woods
2024-05-30
2 min read
Mehlich 3 soil test P in sand rootzones
Normal range of test results Soil test phosphorus (P) is present across a wide range in golf course putting green rootzones. I looked at ATC data from putting greens for the past five years.
Micah Woods
2024-05-19
6 min read
The time component of soil test interpretation
Soil nutrient levels are dynamic. They change. In non-saline situations, the nutrient levels go down as the grass grows and uses some quantity of the soil nutrients.1 This is why the SLAN medium ranges seem so high, and why the MLSN method of soil test interpretation is so much more precise when making fertilizer recommendations for turfgrass.
Micah Woods
2024-05-07
3 min read
A couple problems with year-round soil nutrient analysis
The Green Section Record (Volume 62, Issue 4) has an interesting article by Chris Neff making a case for year-round soil nutrient analysis. Specifically, he wrote that: To adequately make decisions regarding these crucial fertilizer applications, it is imperative to conduct soil sampling throughout the year to assess soil properties and current nutrient levels, which play a pivotal role in the overall health and performance of the course.
Micah Woods
2024-03-04
2 min read
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