Journal of Rangeland

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The appropriate and permissible utilization of the rangeland causes stability, prevention of degradation, stability of high quality plants and improvement of its condition. Appropriate grazing intensity causes continuous and economic use in rangeland and to achieve stability and continuity of production in rangelands and determine the most appropriate level of exploitation, study the effect of different harvest intensities on forage production of three important species of Cenchrus pennisetiformis, Panicum turgidum and Sphaerocoma aucheri in Sirik region of Hormozgan province since 2006 for four years. Experimental treatments included four harvest intensities of 25, 50 and 75% and control (without harvest). In each treatment, 10 rootstocks of the species were considered as replicates, which were evaluated on each of the dependent variables. The results were analyzed in SAS software. The results showed that different harvest intensities, years and months studied and their interactions in species are very significant. Harvest intensity affected the amount of green forage and species height and all treatments were significantly different from the control. Therefore, an allowable harvest of up to 50% can be suggested for the above species.

Keywords: Appropriate level, utilization authorized, forage species Sirik Region, Hormozgan province

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