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ecmn | Thank you very much for making this topic
Nutrient density is a descriptive term for food, not soil
Your prairie soil North Central South Dakota was built over millions of years and then it's been farmed for how long. 15 years in CRP is barely a nap.
Crp gets talked about like it's regenerative. It's not. It's letting grass grow. What nrcs needs to do is one completely rewrite management of CRP. But they need to measure the soil health both physically and lab tests when a field enters the program and then again when it leaves.
What we would see is that the top 4 to 8 in would show improvement of the metrics. You, but you would also see that you've basically created a sod mat on top of the same soil you started with. The soil underneath never changed because CRP isn't a system
If you rebuild a transmission. You put in new gaskets, seals, o-rings, discs and plates but don't put the bearings back in. The transmission. Transmission can't function because you left out some really important components or mechanisms to allow the transmission to work.
You Said the pasture was rotationally grazed. Details matter. It's the difference of whether soil was rebuilt or mined.
What was the average height of the grass when the cattle got brought into that Bay
What was the heights of the grass when the cattle left that Bay
How much rest time was there
What was the plant density per square foot
If there was a time of drought, what was the condition of the pasture before supplemental feed was brought in
How often was the pasture inter seeded
50 years as a pasture does not make it regenerative. Regenerative is a system, not a timeline.
CRP and rotational grazing are tools that need attention to management, context, expectations
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Where is all the available nutrients
