effect of superabesorbent polymer on soil volume humidity and turf water potential

abstract in order to analyse of soil volume humidity and water potential of turf using of different amounts of water absorbent polymer in sort of acryl amid potassium, an experiment conducted at research farm of meybod azad university in 2005. the experiment was conducted in randomized completed block design in four levels of polymers of 3, 6, 12 and 24 gr/m2 and 0 gr/m2 of polymers was consider as a control with three replications. holland variety of seed turf was use a planting, and the water consumption was monitor by counter everyday. during the experiment and in polymer treatments, based on soil humidity that measured by tdr and water of soil potentate rate of irrigating in each block using graph (p.f). during a course of 90 days sampling was done and water potential of turf was servey every 15 days. the result of the analysis indicated that no meaningful difference was found by reducing the water amount in treatments containing 6, 12 and 24 gr/m2 polymer compare with control treatment in all considered standards. only the polymer of 3gr/m2 demonstrated has different efficiency of water consumption, because of the small amount of super absorbent polymers. whereas the water consumption was saved by 75% in treatments containing polymer compare to the control.