Comparison of Seed Bed Preparation Methods on Seedling Emergence Rate in Six Range Species in Khash Rangelands of Iran

Document Type : Research and Full Length Article


1 Ph.D, Member of scientific board of Northern Khorassan Agriculture and Natural Resources Research Center

2 Ph.D, Member of Scientific board of Research Institute of Forests and Rangelands


This study was conducted to compare the methods of seed bed
preparation in rangelands of Khash region in Sistan and Baluchestan province in
Iran. A split plot design was conducted based on Randomized complete block
design with three replications in 1999. Five seed bed preparation methods were
used as main plot as: 1) Seed sown by passing livestock. 2) Seed sown machinery.
3) Seeds sown as drilled into furrows. 4) Seeds sowing into furrows covered by
straw mulch .5) Seed sown machinery and pressed by roller. Six range species
were used as: 1) Artemisia santolina, 2) Eurotia ceratoides, 3) Zygophyllum
eurypterum, 4) Astragalus squarrosus, 5) Stipagrostis sp. and 6) Artemisia sieberi
, as sub-plot. The results of experiment showed significant differences among the
seed bed preparation methods on seedling emergence rate. Astragalus and Eurotia
had higher germination percent when they sown and passing through livestock.
Zygophyllum and Eurotia had higher germination by machinery seeder followed
by roller. The lowest germination percent was obtained by method of seed sowing
in furrows covered by straw mulch and seeds were sown machinery. Among the
species, Eurotia, Zygophyllum and Astragalus were ranked in the first order
followed by Artemisia. The Stipagrostis species. Had no germination for all of
seed bed treatments.


Abu- irmaileh, B.E. 1994. Problems in re vegetation from seed of rangelands on calcareous silty clay soils in Jordan. Journal of Arid Environments. Volume 27, Issue 4, Pages 375-385.
Anonymous. 2003. Weather statistics Khash synoptic stations. Iran Meteorological Organization.
Arefyan, R. 1997. Review and determine the most appropriate seeding rates, and best managed pasture plant species. Research Center of Natural Resources and Animal Affairs of Golestan province.
Fayaz, M. 2000. Khash vegetation zone. Research Institute of Forests and Range Publications. Publication No. 245.
Fazilati, A. and Hosseini Iraqis, H. 1985. Rangeland management practices and re form the country and restore it. Joint Technical Committee Publications Office of Forests and Rangelands Organization pasture and agricultural promotion organization.
Kardavany, P. 1992. Rangelands, problems and solutions in Iran. Tehran University Press.
Mesdaghi, M. 1985. Instructions cultivated pasture and forage crops under rain fed conditions. Post Magazine of Natural Resources, Department of Natural Resources of Gorgan, No. 9.
Mesdaghi, M. 1995. Rangeland management in Iran. University Press of Imam Reza.
Ouled Belgasem, A.m. Neffsti, V.P., and. Chaieb, M. 2005. Effects of seed age and seeding depth on growth of Stipa lagasca seedlings. Journal of Arid Environments. Article in press.
Peymani fard, B. Malek-Pour, Me. and. Faezi Poor B. 1994. Introduce important plants cultivated pasture and guide them to different regions. Research Institute of Forests and Range Publications. Publication No. 24.
Peymani, B. and Trify A. 1984. Rangeland reform by exploring the growing season, depth, method and amount of cultivated plant seeds to drought-resistant pasture. Research Institute of Forests and Range Publications.
Sayyadi, M. 1984. Increase production capacity ranges from choosing the appropriate forage species and the impact of planting method. Research Institute of Forests and Range Publications. Publication No. 11.
Snyman, H.A. 2003. Revegetation of bare patches in a semi-arid rangeland of South Africa: An evaluation of various techniques. Journal of Arid Environments Volume 55, Issue 3, pages 417-432.