Published in Scientific Papers. Series A. Agronomy, Vol. LXIII, Issue 1
Written by Mima TODOROVA, Neli GROZEVA, Mariya GERDZHIKOVA, Ana DOBREVA, Svetloslava TERZIEVA
Organic production and markets are expanding rapidly. A field study was carried to compare effects of different agriculture soil system on productivity of Rosa damascena Mill. and Rosa damascena x Rosa gallica. The experiment was conducted on six private arable areas with oil bearing rose in Rose valley, Southern Bulgaria. The selected study area size was 5000 m2 from each private territory. The flowers of R. damascena were picked up in the morning (6:00- 8:00 a.m.), in 3, 4 and 5 phases. The productivity was determined as essential oil content in the blossoms. Soil samples were also collected from every study area from surface horizon 0-30 cm. The samples were analyzed for several soil parameters as, organic matter content, pH values, available nitogen, phosphorus and potassium content. Statistical analysis was done with Unscrambler (Camo, Norway) software packages. The agricultural system of the oil bearing rose (Rosa damascena Mill.) grown has an effect on the essential oil content. The mean value of essential in organic production = 0.026% is statistically proven lower than conventional production = 0.038%.
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