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Deficiencies of boron occur in much wider range of crops and climatic conditions than the deficiencies of any other micronutrients. The recent estimation of the micronutrient abundance in Polish soils showed the soluble boron deficiency on the level of 79% on the basis of analyzed 101521 soil samples from arable horizon Deficiency of 1 mole HCl · dm⁻³ soluble boron in soil is usually not fully reflected...
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