ABSTRACT
The effect of herbicides on the yield and quality of Coriandrum sativum L. and the weed density associated with it was examined. The best weed control was achieved with a combination of Pendimethalin (1320 cc/ha) and Metribuzin (500 g/ha); however, over a two-year period the herbicides exerted a toxic effect on the crop resulting in a poor seed yield. The highest seed yields were obtained with Trifluralin (840 cc/ha) + Linuron (1000 g/ha), Pendimethalin (320 cc/ha) or Metribuzin (500 g/ha). GC analysis of oils obtained from coriander seed produced from a variety of herbicide treatment did not appear to affect the chemical composition greatly although the oil produced from plants treated with Metribuzin (500 g/ha) was richest in linalool (44.47%).