Effect of Humic acid and Spraying of Auxins in Percentage of Volatile Oil and its physicsl properities of Lemon grass (Cymbopogon citatus L.)

Abstract

Apot experiment was conducted in a lath house on lemon grass plant in university of tikrit as complete randomized design exeperiment with tow factors and Humic acid as ( Liq humus18) without and with 16L/h (sprying and addition on soil directly)and(IAA and IBA) without and with 150 mg/L.The results Showed superior the treatment of addition of organic fertilizer with mixture of IAA and IBA gave higher essential oil concentrant by(1.04%),Specific gravity reached(0.9460),Density reached(0.9260) and Refractive index reached (1.4839 ).