Published in Scientific Papers. Series A. Agronomy, Vol. LXIII, Issue 2
Written by Roksana MINEVA, Antoniya STOYANOVA, Velika KUNEVA
The aimed of the study is to investigate the effect of nourishment and irrigation on the productivity of oleaginous rose (Rosa damascena Mill). The study was conducted with a bio-fertilizer based on natural hydrolyzed Siapton proteins. The observations were carried out under irrigated and non-irrigated conditions. The field experiment was performed in the field of experience of the Institute for roses, aromatic and medicinal plants, Kazanlak, Bulgaria in the period 2015- 2017. The treatment was done twice with in a period of 20 days, of foliage in the following variants: Siapton treated 1500 ml/ha, Siapton treated 2500 ml/ha, Siapton treated 3500 ml/ha. The biometric analysis shows an increase in mass and color diameter of the treated variants. The correlation relationships obtained indicate the degree of the influence of each indicator in the formation of yields in oleaginous rose under the irrigation conditions considered. The linear regression models are expressing the influence of the indicator of yield, enabling theoretically how to determine and also in which direction it have to be change this indicator contributes to improved yield.
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