Kooiker - 3/27/2024 09:46
Hilltop Husker - 3/27/2024 00:27 What makes it different? For those of us in states that don't use such rating systems.
"Here" in this corner of Iowa the best dirt is "Primghar silty clay loam", that is black dirt, high in OM and its deep with clay underneath it, its assigned CSR2 is "100". That's the soil type that is found on the high $ pieces of land that make the headline news stories.
"Silty clay loam" in any soil description is usually a good sign but some are better than others, what makes some better than others is OM and what's underneath the topsoil.
The words you do not want to see in a soil description are "alluvial", "sandy" and "salida". Those words usually mean there is a gravel pit nearby, which is never a good sign. Past that, I'd prefer to keep it under a D slope.
In general, at least for "here", the higher the CSR rating, the longer it can go between rains without hurting yields severely. A soil type with a 100 CSR2 can go weeks without rain and still make a good crop. "Here" a soil type with a CSR2 in the 40's or below needs rain every week or its not going to produce an ear.
Would you trade high productive ground for more low productivity?
