Peat-sapropel substrate with optimal for blueberry acidity (3.8-4.2 ph) and the degree of decomposition of organic matter over 50% contains a large number of macro- and microelements and provides plants with everything necessary for normal development and fruiting. The presence of
2810 mg of iron in the substrate protects blueberry from plant chlorosis, a disease that disrupts the formation of chlorophyll in the leaves and reduces the activity of photosynthesis.