Abstract:

The purpose of this study is to explore the effects of some organic fertilizers sold for organic farming in the market, the soil under the winter vegetable plant cover on microbial biomass and enzyme activity. In the study conducted in the form of a field test, 3 organic fertilizers (Biofarm, Leonardit and Humic acid) and 4 vegetables (marul, orange, roca and corn) were used. In the experiment where vegetables were grown according to the organic and conventional agriculture system, the topics were Biofarm, Biofarm+Leonardit, Biofarm+Humic acid and Conventional agriculture. In the soil samples taken twice during the test, the activity of microbial biomass, dehydrogenase, β-glukozidase, alkaline phosfatase and protease was detected. The effect of fertilizers and plant varieties on the microbial biomass, dehydrogenase, β-glukozidase, alkaline phosfatase and protease activities has been significant at 1%. In all the parcels in which Biofarm fertilizer is applied, the activity of microbial biomass and enzymes has increased considerably. In biofarm applications, the amount of microbial biomass has been found greater by an average of 77, dehydrogenase by 175, β-glukosidase by 55%, alkaline phosfatase by 44% and protease by 69% compared to conventional farming. Leonarditis and humic acid have no different effect on microbial biocid and enzyme activity.

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