[Effect of different NPK fertilization rates applied over many years on the content of potassium in meadow plants and soil]
1984
Gorlach, E. | Curylo, T. | Grzywnowicz, I. (Akademia Rolnicza, krakow (Poland))
Potassium balance in meadow soils was found to show negative values even with potassium rates as high as 200 kg/ha annually. The decline in the content of available potassium was faster in light soils than in a silty alluvial clay soil. Content of available potassium in the soil and N fertilization rate were discussed as criteria for K fertilization requirements
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