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Bulgarian Journal of Soil Science, Agrochemistry and Ecology
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Soil microflora under different fertilization treatments of broccoli (Brassica oleracea L. var. italica Plenck)
Dessislava Todorova, Aneliya Zdravkova
Abstract: The investigation was carried out in 2013 at the Institute of Agriculture – Kyustendil, Bulgaria with broccoli (Brassica oleracea L. var. italica Plenck) Fiesta F1 under following fertilization treatments: V1 - unfertilized (control), V2 – chicken manure, V3 – Hemozym NK 4,5-6 and V4 – ammonium nitrate. Ammonium nitrate reduced the amount of soil microflora by 36,27% and Hemozim NK 4,5-6 by 53,92% compared to the unfertilized control. The total microflora number changes mainly depend on the amount of bacteria using inorganic nitrogen, ammonifying bacteria and microscopic fungi. Pearson correlation coefficients r were 0,69, 0,65 and 0,48, respectively.
Keywords: broccoli; fertilization; soil microorganisms
Date published: 2018-07-19
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