Tavakoli, H., Sanadgol, A., Garivani, U. (2006). Effect of different grazing intensities and rest grazing on forage production and performance of Russian brome. , 13(2), 69-73.
Hosein Tavakoli; Abbas ali Sanadgol; Uosef Garivani. "Effect of different grazing intensities and rest grazing on forage production and performance of Russian brome". , 13, 2, 2006, 69-73.
Tavakoli, H., Sanadgol, A., Garivani, U. (2006). 'Effect of different grazing intensities and rest grazing on forage production and performance of Russian brome', , 13(2), pp. 69-73.
Tavakoli, H., Sanadgol, A., Garivani, U. Effect of different grazing intensities and rest grazing on forage production and performance of Russian brome. , 2006; 13(2): 69-73.

Effect of different grazing intensities and rest grazing on forage production and performance of Russian brome

تحقیقات مرتع و بیابان ایران
Article 1, Volume 13, Issue 2, February 2006, Pages 69-73    PDF (190.19 K)
Document Type: Research Paper
Authors
Hosein Tavakoli* ; Abbas ali Sanadgol; Uosef Garivani
Abstract
Russian brome (Bromus tomentellus) is a prennial grass with good adaptability to climatic condition of north Khorasan. So, it has promise for using in range improvement projects. Because threre is no enough local information about mangement of this plant, the present experiment has been conducted in Sisab Reaserch Station (SRS) to evaluate the response of this species to grazing intensities and rest grazing. Four grazing intensities of  light (20 to 45% of forage removal), moderate (45- 65% of forage removal), heavy (65- 80% of forage removal) and without grazing  as control applied by herd of lamb and sheep for three consequent years from 1999 to 2001. The year of 2002 considered as rest period from grazing. Herbage mass and number of plant per unit area measured as an index response. Herbage mass production decreased by reduction in precipitation. Heavy grazing resulted in significant reduction in herbage production and number of plants per unit area, but one year rest from grazing componsated the negative effect of intensive grazing on herbage mass reduction. Management implication based on this results show that plant can tolerate grazing intensity by 45-65% of herbage removal and indicate on the importance of rest grazing on  survivance of this plant.
Keywords
grazing intensity; Production; Density; Bromus tomentellus; rangelands; North Khorasan province
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