Evaluation of Competition and Ground Cover in Commen Vetch (Vicia sativa L.) and Pearl Millet (Pennisetum glaucum L. R.Br.) Intercropping

In order to evaluate the competition in common vetch and pearl millet (nutrifid variety) intercropping, an experiment based on randomized complete block design with three replications was carried out in the Research Field of Faculty of Agriculture, University of Tabriz. Treatments included a plant density of the millet (15 kg seed/ha) and three plant denstities of vetch 50, 70 and 90 kg seeds/ha) and three combinations of the two crops. The millet with low density of vetch showed highest relative yield total. The relative crowding coefficient and aggressivity of millet on vetch at all treatments were negative. Vetch was dominant to millet. The competition index of vetch increased with increasing of vetch density. Therefore, the millet and vetch yield per plant drastically decreased as compared to isolated single plants.