Investigation on yield and quality of Isabgol (Plantago ovata L.)

In order to investigate the effects of irrigation regimes and seeding rate on quantity of Isabgol (Plantago ovata) a field experiment was conducted at the Agricultural Research Station, Fersdowsi University of Mashhad, in April 2004. For this purpose a spilt-plot experiment based on complete randomized block design with three replications was used. Three irrigation intervals (every 7, 14 and 21 days) allocated in main plots and three seeding rates, 8, 12 and 16 Kg/ha allocated to sub plots. The results indicated that plant dry weight, plant height, number of spikes per plant and seed weight per spike were significantly affected by irrigation intervals and decreased irrigation intervals caused to increasing the above parameters. The effect of treatments on spike length and seed yield, was not significant. Effect of seeding rates on spike length, number of seeds per spike and seed yield was significant. However, the highest seed yield was obtained at the highest seeding rate (16 Kg/ha). Effect of seeding rates on plant dry weight, plant height and number of spike per plant, was not significant. The effect of different irrigation regimes and density on seed quality characters was studied in a complete randomized block design with three replications. The results indicated that effects of treatments on the amount of mucilage was significant and the highest amount of mucilage was produced at higher seeding rate (16 Kg/ha).