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Comparison Of Mehlich-3 And Ammonium Acetate Extractable Calcium And Magnesium In Kansas Soils, E. B. Rutter, D. A. Ruiz Diaz, L. Hargrave
Comparison Of Mehlich-3 And Ammonium Acetate Extractable Calcium And Magnesium In Kansas Soils, E. B. Rutter, D. A. Ruiz Diaz, L. Hargrave
Kansas Agricultural Experiment Station Research Reports
The use of the Mehlich-3 (M3) soil test procedure to assess the plant availability of numerous macro and micronutrients has become common at soil testing labs across the US. Mehlich-3 is used for soil tests for phosphorus (P) and potassium (K) in Kansas; however, data for other base cations for existing methods are scarce for Kansas soils. The objective of this study was to investigate the relationship between M3 and ammonium acetate (AA) extractable calcium (Ca) and magnesium (Mg). Regression analyses indicate a near 1:1 linear relationship between M3-Mg and AA-Mg across a wide range of soil pH and soil …
Evaluation Of Soil Parameters After Long-Term Subsurface Drip Irrigation Under Minimum Tillage System, E. B. Rutter, D. A. Ruiz Diaz
Evaluation Of Soil Parameters After Long-Term Subsurface Drip Irrigation Under Minimum Tillage System, E. B. Rutter, D. A. Ruiz Diaz
Kansas Agricultural Experiment Station Research Reports
The objective of this study was to evaluate soil parameters after the long-term use of sub-surface drip irrigation under no-till, with the use of high pH irrigation water. Results from this study showed that stratification of soil pH and soil test phosphorus (P) was more prominent when compared to other soil parameters. However, the stratification of pH and soil test P is likely the combined effect of surface fertilizer application and sub-surface irrigation water. The stratification of other parameters, such as soil calcium (Ca) and sodium (Na) and electrical conductivity (EC), was less clear. Soil test potassium (K) showed some …