the effect of application of chemical and organic fertilizers on yield and yield components of sesame (sesamum indicum l.) in different plant densities

in order to understand the effect of plant density and different fertilizers on sesame (sesamum indicum l.) production, an experiment was conducted as a factorial arrangement based on completely randomized block design with three replications. the experimental treatments were fertilizers in four levels (cow manure (30 t.ha-1), municipal compost (30 t.ha-1), chemical fertilizer (250 kg ammonium phosphate + 100 kg urea) and control (no-fertilizer)) and plant density in four levels (20, 30, 40 and 50 plant.m-2). the results showed that all treatments increased the plant height, number of capsule per plant, plant biomass, seed yield, seed weight and number of seed per plant compared to control, significantly. the highest amount of the traits was obtained in manure treatment. the seed yield was increased by increasing plant density, but decreased the plant height, number of capsule per plant, plant biomass, seed yield and weight and number of seed per plant, significantly. 1000-seed weight, harvest index and weight of seed per capsule had no affected by treatments. our result indicated that the density of 40 plant.m-2 among using manure was the most appropriate of cropping pattern in our experiment.