Effect of meat and bone meal (MBM) and Bacillus subtilis on the content of nitrogen and phosphorus in soil and white mustard biomass
Keywords:Sinapis alba L., animal meal, microorganisms, soil, nutrients, uptake
The aim of this pot experiment was to determine the effect of increasing rates of meat and bone meal (MBM), applied alone or in combination with a microbial preparation containing Bacillus subtilis (FITOdoctor), on the growth of Sinapis alba L.. Dry matter (DM) yield, the nitrogen (N) and phosphorus (P) content of white mustard were determined, together with the mineral N (Nmin) and available P content of soil. The application of FITOdoctor to the soil improved white mustard yield only during the second growing season. Second-harvest white mustard biomass had a significantly lower content of N and P than first-harvest biomass. The highest MBM rate significantly increased the Nmin content of soil. Nitrogen uptake by plants and N concentration in biomass were highest in the treatments with the highest mineral N content of soil. Similar relationships were observed for P whose uptake by plants was also affected by B. subtilis in two treatments (NPK, 0.8% MBM). MBM is a valuable N and P fertilizer, whereas B. subtilis has varied effects.
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