Effects Of Biofertilizer And Plant Density On Yield Components And Seed Yield Of Coriander (Coriandrum Sativum)

ABSTRACT: In order to study the effect of biofertilizer and plant density on yield components and seed yield of coriander (Coriandrum sativum), an experiment was conducted as factorial experiment in the base of randomized complete blocks design with twelve treatments and three replications at research field of Agriculture Company of Ran in Firouzkuh of iran in 2011. The factors were biofertilizer (Nitrogen fixing bacteria), mixture of Azotobacter chroococcum and Azospirillum lipoferum in four levels (non-inoculated, inoculated seeds, spray on the plant base at stem elongation stage and inoculated seeds + spray on the plant base at stem elongation stage) and plant density in three levels (12.5, 16.6 and 25 plants m-2). Results showed that the highest plant height, umbel number per plant, weight of 1000 seeds, dry weight of plant and seed yield were obtained by using the biofertilizer twice (inoculated seeds + spray on the plant base at stem elongation stage). plant density, also showed significant effects on mentioned traits. The maximum umbel number per plant, weight of 1000 seeds and dry weight of plant were obtained with 12.5 plants m-2 and the highest plant height and seed yield were obtained with 25 plants m-2.