The effect of watering durations on soil seed bank diversity (case study: Vaz region)

Effect of different watering durations on soil seed bank diversity and frequency was investigated. The study was conducted in Vaz rangelands of Mazandaran province. Soil samples were collected øin 40 1 m 2 plots from two different depths (0-5 and 5-10 cm) through randomized-systematic method in December 2010. Watering treatments were carried out in equal volume of water in different time interval including: one day, two days, four days and a week. The data were statistically analyzed by the SPSS software program. The differences between the means was compared using Duncan test (P