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In order to determine the dependencies between the chemical indices of the soils of the automorphic series and the results of spectrographic analysis, the field survey with HandHeld2 spectrograph was conducted at cleaned surfaces of the soil sections at soil sampling site. Data for zonal soils of Chuvash Republic (podzolic chernozem, dark grey forest soils, typical grey forest soils and light grey forest soils) with different erosion degree were obtained. The results of agrochemical inspection were analyzed along ...