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This study aimed to identify a rational treatment for soil and determine the efficiency of the use of chelated liquid microfertilizers on the yield of spring hard wheat crops in chernozemic soils of the Samara Region of Russia. The study was conducted as a two-factor field experiment using a recognized variety of spring hard wheat:?Bezenchukskaya stepnaya?. The soil of the experimental field was typical medium-deep heavy loamy chernozem. Data on some agrophysical properties of the soil, weed infestation of crops, ...