Investigation of vegetative and reproductive characteristics of Damask Rose in different irrigation regimes through surface and subsurface drip irrigation

In this study some vegetative and reproductive characteristics of Rosa damascene under three levels of irrigation water amounts (100, 70 and 40 % potential evapotranspiration) though surface and subsurface drip irrigation systems has been investigated. The investigated morphological characteristics were included the number of branches per plant, shading diameter, plant height, number of blooms, petals weight, fresh weight of one flower, percentage of dry matter of flower and total dry weight. The experiment was performed as a split plots design based on the randomized complete blocks with three replications at Research Center for Agriculture and Natural Resources of Kerman province (Research Station Joopar) during 2012 and 2013. Results showed that the plant height, number of blooms, fresh weight of one flower, petals weight and percentage of dry matter of flower were not significantly different for the two types of irrigation systems but all plant traits except percentage of dry matter of flower were significantly different under different irrigation management regims. Due to water resources limitation in the study area, the 70% potential evapotranspiration treatment was recognized as the best treatment because having 30% decrease in irrigation water amount, there were only 5.8% and 15% decrease in the number of blooms and the shading diameter, the most effective traits on yield (correlation coefficient = 0.99), respectively.