T. KOLEV1, I. IVANOVA2 and D. NENKOVA2
1Agricultural University, BG-4000 Plovdiv, Bulgaria
2Institute of Cryobiology and Food Technologies, BG-1407 Sofia, Bulgaria
KOLEV, T., I. IVANOVA and D. NENKOVA, 2005. Effects of several plant growth regulators on the productivity and essential oil content of coriander (Coriandrum sativum L.). Bulg. J. Agric. Sci., 11: 571-575
Field trails for studying the effect produced by several plant growth regulators on the productivity and essential oil content of coriander have been carried out in the experimental base of the Agricultural University (Bulgaria) during 2001-2003. Trials were conducted according to the block method in four replications. The plot area was 15 m2. The effects of the following plant growth regulators on the growth and quality of coriander (Coriandrum sativum L.) have been studied: RA (200 ml/ha); AN (300 ml/ha); AD (600 ml/ha) and AC (300 ml/ha). Treatments have been made in the full flowering phase of the crop.
The coriander treatments with the plant growth regulators: AN-applied at the rate of 300 ml/ha and RA-200 ml/ha during the full flowering phase, contributed to an increase of the seed yield respectively by 12.3 % and 7.4% as compared to the non treated (water) control.
Contents of the essential oil and oil were increased with the AN-plant growth regulator treatment, respectively by 9.3% and 10.4% above the control.