TESTING THE IMPACT OF WASTE FROM ANAEROBIC DIGESTION (ENRICHED WITH AN ORGANIC COMPONENT ON THE QUALITY OF AGRICULTURAL LAND)

Jana Kodymová

Abstract


Waste from anaerobic digestion is considered as a mineral fertilizer and it is applied to agricultural land normally. The aim of our attempt was to enrich this waste from anaerobic digestion (digestate) with the organic component (represented in our case by the haylage/silage). For this purpose, we made different mixures of digestate and haylage/silage in different weight ratios. In the field trial, the effect of these mixtures on the soil, under standard agricultural conditions, was monitored. Selected risk elements (Al), accessible nutrients (P, K, Mg, Mn, Ca) and the amount of carbon and nitrogen in the soil were monitored. The results of the laboratory tests confirmed that the areas where the sowing and digestate mixtures were applied showed greater amounts of macro- and micronutrients in plant-accessible forms than the surface fertilized only with digestate or areas only fertilized with standard fertilizers.


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