The present study was conducted in Erzurum during the years 2010 and 2011 to determine the effects of different nitrogen and phosphorus doses on essential oil components of spearmint genotypes (Mentha spicata L. and Mentha villoso-nervata Opiz.). | Turkish Journal of Agriculture and Forestry Research Article Turk J Agric For (2016) 40: 882-893 © TÜBİTAK doi: The effects of different nitrogen and phosphorus doses on essential oil components of some Mentha genotypes 1, 2 Meryem YEŞİL *, Kemalettin KARA Department of Crop and Animal Production, Vocational School of Technical Sciences, Ordu University, Ordu, Turkey 2 Department of Field Crops, Faculty of Agrıculture, Atatürk University, Erzurum, Turkey 1 Received: Accepted/Published Online: Final Version: Abstract: The present study was conducted in Erzurum during the years 2010 and 2011 to determine the effects of different nitrogen and phosphorus doses on essential oil components of spearmint genotypes (Mentha spicata L. and Mentha villoso-nervata Opiz.). Two genotypes of Mentha spicata (genotypes 2 and 6) and one genotype of Mentha villoso-nervata (genotype 4) were tested under three nitrogen and phosphorus doses (0, 50, and 100 kg/ha) in a randomized complete block design with three replications. Essential oil components of the genotypes were determined and subjected to variance analysis. Effects of experimental year and nitrogen and phosphorus doses on investigated traits were found to be significant. Considering the experimental years of 2010 and 2011 and the nitrogen-phosphorus fertilizer doses, contents varied respectively between and (for nitrogen treatments) and between and (for phosphorus treatments); 4-terpineol contents varied between and and between and ; pulegone contents between and and between and ; carvone contents between and and between and ; piperitone contents between and and between and ; and finally caryophyllene between and and between and , respectively. The greatest .
