Liming%20impacts%20barley%20yield%20over%20a%20wide%20concentration%20range%20of%20soil%20exchangeable%20cations

The effective cation the experimental sites, including information on the exchange capacity (ECEC) was calculated from the experimental design, the crops grown, and some sum of the charges of exchangeable cations (Al3?, aspects of the management are provided by Holland Ca2?, Mg2?, K? and Na?, but excluding H?) and et al. [...] There was a significant difference between the sites in the form of the relationship between soil pH and the concentration of exchangeable Zn. [...] There was a negative correlation between The relationships between RY and the concentrations the concentration of exchangeable Ca and the con- of the exchangeable cations in the soil were only centrations of all the other exchangeable cations. [...] The importance of Al in the soil in estimated exchangeable cation concentrations using was confirmed in the simulation of soil acidification of three common extraction methods (CaCl2, NaNO3, the Rothamsted soil, in specific for the control (no NH4NO3). [...] 3) differences between the sites in the significance clearly demonstrate the importance of soil acidity on (P values) of the effects of the concentration of crop production.