Agroecological and economic assessment of non-traditional fertilizer application in oat crops

The relevance of the research topic is due to the need to solve the problem of waste disposal, especially urban sewage sludge, as well as the search for ways to improve the efficiency of agricultural production. Both tasks can be solved by using sewage sludge as a fertilizer for growing crops. At the same time, soil disposal is more economical than traditional methods and does not require additional land, but it leads to accumulation of heavy metals in the resulting products, which in turn requires measures to ensure that their content does not exceed the MAC. The article contains the results of the analysis of the use of non-traditional fertilizers (sewage sludge and Humiton preparation) in oat cultivation, as well as the resulting indicators of environmental and economic efficiency. Used types of non-traditional fertilizers and their main characteristics are considered. It is noted that sewage sludge in its composition is close to other types of organic fertilizers. Humiton preparation is an original development on the basis of peat. The results of application of the mentioned non-traditional fertilizers and the indicators characterizing them, such as yield, grain quality, content of heavy metals in grain, are presented. The influence of non-traditional fertilizers on oat yield, grain quality, heavy metal content in grain is considered. The economic efficiency obtained by using non-traditional fertilizers is also compared. The article concludes that, in general, the effect of non-traditional fertilizers on the resulting products is positive, the grain is environmentally safe. The expediency of their use is also confirmed by the economic effect obtained. Combinations of application of traditional and non-traditional fertilizers, which allow to maximize economic indicators and to ensure the required level of grain quality, are determined.

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