Effects of Different Phosphorus Doses on Nutrient Concentrations as well as Yield and Quality Characteristics of Lavandin (Lavandula × intermedia Eme

摘要

Lavandin (Lavandula × intermedia Emeric ex Loisel. var. Super) is cultivated in an area of about 320 ha inIsparta province of Turkey. This study was conducted to determine the effects of phosphorus fertilization atthe levels of 0, 50, 100, and 150 kg ha-1 on the yield characteristics, essential oil content and composition, andnutrient concentrations of lavandin (Lavandula × intermedia Emeric ex Loisel. var. Super) in 2010 and 2011growing season. With an increase in the levels of phosphorus, the P, N, K, Ca and Fe concentrations increasedin the leaves, while the Mg, Mn and Zn concentrations (p0.01) decreased. On the other hand, thecharacteristics of plant height, branch number, flower height and fresh, dry and drug flower yields increasedup to the level of 100 kg ha-1 of phosphorus but decreased at the higher level. In comparison with the controlapplication, the application of 100 kg ha-1 of phosphorus increased the essential oil content approximately by16%. Linalyl acetate, the main component of the essential oil, rose from 25.07 to 30.72% on average from thecontrol application to the highest phosphorus application, whereas the rate of linalool decreased from 41.82 to38.54%. Phosphorus fertilization significantly affected the nutrient contents as well as yield and qualitycharacteristics of lavandin. Therefore, application of 100 kg ha-1 of phosphorus may be suggested in lavandinto obtain the ideal yield and quality.