Category: Soil Chemical Analysis

5 Things You Should Know About Phosphorus

March 4, 2021/in Phosphorus, Regional Data, Soil Chemical Analysis/by John Lee

1. The two accepted soil phosphorus tests in the North Central Region are the Olsen and Bray-P1 methods The Olsen (bicarbonate) method is the standard soil P test in the North Central region. This method was developed to work on soils with low and high pH. The Olsen method works well in precision soil sampling, […]

5 Things You Should Know About Calcium

March 4, 2021/in Base Cation Saturation Ratio, Calcium, Regional Data, Soil Chemical Analysis, Soil pH/by John Lee

1. Calcium (Ca) is abundant in soils of the upper Midwest, northern Great Plains, and Canadian Prairies; calcium deficiency in agronomic crops is rare Calcium makes up about 3.6% of the Earth’s crust, and it is relatively abundant in agricultural soils across the region. In soils with pH greater than 6.0, Ca is the dominant […]