Study the time of inter and exit of animal in key ranges of 5 bioclimatic zones of Iran (Khoshkerood-Markazi)
2011
Zarekia, Sedigheh
Range species consist of different plant species, each with different vegetative and reproductive stages Thus, each species has a particular time period for growing readiness and grazing at a particular time must also stop. Moreover, rangeland soil is ready only in certain times to sever livestock. Without understanding these characteristics, determining the grazing season and livestock management and grazing is not possible. Timely entry and exit of animals to rangeland during the operation and improvement of the pasture is pasture. With this study, the revising of grazing rangeland management programs in similar areas with similar vegetation will be possible. So in order to determine the timing of entry and exit of livestock to and from rangeland this study was carried out in a semi-steppe rangeland in Khoshkerood , 60 km East North of Saveh for four years from 2006 to 2011.Information, including the stages of plant phenology and height of 5 species (herbaceous and shrub) and soil moisture conditions Have collected since the beginning of the dry season, and recorded on special forms. So that plant growth start early between 5 to 10 days during wet season. The results of the phenology of plants shows that shrub plants are in flowering and seeding stages in early autumn and middle of November is a good time to enter the livestock into region. Time of exit of livestock is mid-March under license when plants have recently begun to be grown. Based on the phenology, this is the best time to exit. But based on the results of the available utilization and present of annual plant, livestock can be in the rangeland until early May.
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