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National Agricultural Research Centre (NARC), Islamabad  established in 1984, is the largest research centre of the Pakistan Agricultural Research Council (PARC). NARC, with a total land area of approximately 1400 acres, is located near Rawal Lake, six kilometers south-east of Islamabad. Physical facilities in term of experimental fields, laboratories, green houses, gene bank, library/ documentation, auditorium, machinery & lab equipment repair workshops, stores, hostels, cafeteria, audio visual studios, are also available at NARC.

Journal Article

Journal Article

Effect of small ruminant grazing on the plant community characteristics of semiarid mediterranean ecosystems  [2009]

Louhaichi, M. (International Center for Agricultural Research in the Dry Areas, Aleppo (Syria)); Salkini, A.K. (International Center for Agricultural Research in the Dry Areas, Aleppo (Syria)); Petersen, S.L. (Brigham Young Univ., Provo (USA). Plant and Animal Sciences Dept.);

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Rangeland degradation has been widespread and severe throughout the Syrian steppe as a result of both unfavorable environmental conditions and human induced impacts. To explore the effectiveness of management-based strategies on establishing sustainable rangeland development, we compared the response of temporarily removing grazing from rangelands ecosystems to those under a continuous heavy grazing regime. Results indicated that ungrazed sites had both higher biomass production and plant species composition than grazed sites. Ungrazed plots produced more than fourfold herbaceous biomass production than continuously grazed plots (p less than 0.001). Extent of plant cover was 20% greater in ungrazed plots than grazed plots (33.5 & 13.5%, respectively). Furthermore areas protected from heavy grazing had over 200% greater species composition. Thus, protection from grazing can increase forage production and species composition, but may not nec essarily improve plant species available for livestock utilization. A more balanced grazing management approach is recommended to achieve an optimal condition of biomass production (quantity), vegetation cover, quality and available forage species that contribute to proving livestock grazing conditions.
From the journal
International Journal of Agriculture and Biology (Pakistan)
ISSN : 1560-8530

Bibliographic information

Type:
Journal Article
In AGRIS since:
2010
Volume:
11
Issue:
6
Start Page:
681
End Page:
689
All titles:
"Effect of small ruminant grazing on the plant community characteristics of semiarid mediterranean ecosystems"@eng
Other:
"4 ills., 9 tables, 54 ref., Summary (En), E-mail: m.louhaichi@cgiar.org"
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Bibliographic information

Type:
Journal Article
In AGRIS since:
2010
Volume:
11
Issue:
6
Start Page:
681
End Page:
689
All titles:
"Effect of small ruminant grazing on the plant community characteristics of semiarid mediterranean ecosystems"@eng
Other:
"4 ills., 9 tables, 54 ref., Summary (En), E-mail: m.louhaichi@cgiar.org"