Determinetion of Agronomic and Quality Characteristics of Black Cumin Species (Nigella sativa L. and N. damascena L.) Sowed At Different Times

Abstract

This study aims to determine the proper sowing time for the growers of black cumin, a species of the Nigella sativa and N. damascena species of Nigella genus. The study was carried out under the climatic conditions of Mardin plain during 2011-2012 and 2012-2013 vegetation periods. The plants were sowed in four different times: two times in autumn (November 10 and November 25) and two times in spring (March 03 and March 17). Agronomical and quality characteristics of the species sown four different times were investigated in the study. It was found a significant difference between sowing times for all the characteristics examined in the study. In the 2-year average, the seed yield of sativa (3725.8 kg/ha) was found to be higher than that of damascena (2829.0 kg/ha). Higher yields were obtained in both species in autumn sowing. The study determined that damascena, which is more susceptible to cold climate, is not affected by winter sowing in the region and that autumn sowing should be preferred more for both species to obtain higher yields.