Yield and chemical composition of beet (Beta vulgaris ssp. esculenta L.) grown using microbial fertilizers

The systems of production which preclude the application of synthetic products are becoming increasingly popular and important models of sustainable and organic agriculture. This research is aimed at determining the impact of two different types of microbial fertilizers on the yield and quality of beet, to test the opportunity for their wide application in the vegetable crop production. Experiment was set on open field with beet (Beta vulgaris ssp. esculenta), hybrid Kestrel, on soil type alluvium in the village of Jurumleri, near Skopje, during 2013 . The application of the fertilizers was foliar during the vegetation, every 7 days. The variants were set depending on the type of microbiological fertilizer: iZI control - notapplied treatment with microbial fertilizer; variant 1 - treatment with microbial fertilizer Micro I Vita containing several groups of azotobacter, nitrifying microorganisms and phosphor-soluble microorganisms; variant 2 - treatment with microbial fertilizer Micro - Vita II containing azotobacter, nitrifying microorganisms, phosphor-soluble microorganisms and iron.The effect of the application of the microbial fertilizers on beet was determined through analysis of: yield (t/ha), water and dry matter content, content of vitamin C, protein content, cellulose content, determination of the total minerals and iron content. According to the results statistically Significant differences were determined between .the variants in yield. The highest yield of beet is obtained in variant 2, (69.43 t/ha), ie 26.70% higher compared to the yield obtained with the control. In variant 1 with 58.13 t/ha, was 6.07% higher than the yield of the control. Statistically significant difference was determined between: control and variant 2 (14.63 t / hal and variant 1 and variant 2 (11.30 t / hal. Variant 1 had significant higher content, compared with the control, for the following components: vitamin C (6.86%), cellulose (13.79%) and protein (18.18%).While variant 2, compared with the control had significant higher content for the following parameters: vitamin C (14.71%)' cellulose (27.59%), protein (44.62%) , minerals (6.25%) and Fe (100%). According to the presented results application of the microbiological fertilizers significantly influenced for increasing