Determination of indices concerning the optimum rates of fertilization. 1. Phosphorus fertilization
Fotyma, M.; Adamus, M.; Filipiak, K.; Gosek, S.; Kozlowska, H.
Pamietnik Pulawski (66): 75-88
Results of field trials at many sites in Poland in 1962-71 on the effect of increasing rates of applied P were subjected to linear regression analysis and the rate at which P should be applied to effect a given increase in the P2O5 content of the soil was calculated. It was found to be more difficult to increase the P content of light soils than that of heavy soils.