Effect of irrigation regimes and the plant density on shear strength and physical properties of Azivash (Corchorus Olitorius) stem
Keywords:Azivash, plant density, shear strength, irrigation regime
Three irrigation regimes, 6, 12 and 18 days, the distance between seeds in four levels: 5,10, 15 and 20 cm (density, respectively, 80, 40, 27 and 20 plants per m2) and a row spacing of 25 cm was considered that was tested in a randomized complete block design with three replications. The results showed that the effect of irrigation on cutting force, shear strength and energy per unit area was meaningful at 5% level and the effect of plant density on cutting force was meaningful at 1% level, but was not meaningful on shear strength. Also showed interaction between irrigation and plant density on cutting force, shear strength and energy per unit area is not meaningful. It was observed that the effect of irrigation and plant density on the length, diameter and stem weight was meaningful at 1% level. The interaction between irrigation and plant density on stem weight was meaningful at 1% level, respectively. The maximum weight value of stems in irrigation of every 6 days in density of 20 plants per m2 has been made to 0.73 g and the minimum weight value of stems in irrigation of 18 days and a density of 80 plants per m2 was obtained of 0.16 g.