In the model experiment on columns, the coupled study of migration mobility of water-soluble organic substances (WSOS) and calcium in sod-podzolic light-loam soil reclaimed by scientifically justified (0.9 Ha) and overestimated (2.5 Ha) doses of chalk was carried out. During 16 washings of the soil produced with a dose of 0.9 Ha chalk, 133 mg of Ca and 469 mg of sorghum were removed from the soil reclaimed with a dose of 2.5 Ha chalk – 637 and 510 mg, respectively. An increase in the dose of chalk by 2.7 times led to increased migration of calcium by 4.8, WSOS – by 1.2 times. Increased migration of calcium affected the eluviation of WSOS in the variant with the use of a dose of chalk equal to 2.5 Ha, compared to the variant with a scientifically justified dose of chalk and was more ronounced. The coefficients of determination were equal to R2 = 0.81 and R2 = 0.41, respectively. During the entire period of study in the soil of the exp
