اثر سيستم ها و شدت هاي چرا بر توليد جاري و مصرف علوفه ، در چراگاه

The effects of grazing systems and grazing intensities on standing crop and forage intake in Bromus tomentellus

Short-term effects of grazing systems and grazing intensities on standing crop and forage intake of Bromus tomentellus were studied in Homand Abesard rangelands research Station in 2001 . The rotation and continious grazing systems and heavy, medium and light grazing intensities were investigated by a split- split plot design.The results showed that the rotation grazing system had more effects on decreasion of standing crop and increasion of forage intaking of Bromus tomentellus in comparison of continious grazing system. There were no significant difference between light and moderate intensities of rotation system,but they differed with heavy treatment significantly.In continious grazing system,the difference of grazing intensities were significant .