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Paper Information

Journal:   IRANIAN JOURNAL OF RANGE AND DESERT RESEARCH   winter 2019 , Volume 25 , Number 4 (73); Page(s) 853 To 862.

Investigation of the appropriate season and cultivation method of Astragalus curvirostris as a perennial species in Blooman rangelands, Lorestan, Iran

* Lorestan Agricultural and Natural Resources Research and Education Center, AREEO, Khorramabad, Iran
Unfortunately, due to the improper use of natural resources, tremendous changes on the Earth happened which are harmful to human beings. The multidimensional nature of sustainable development has caused to pay more attention to the use of compatible, resistant, productive, high quality and palatable species. One of these species is Astragalus curvirostris as a permanent species, which one of its habitats is in Beluman rangelands with an average height of 1960 meters above sea level and an average annual rainfall of 593. 3 mm. In two times and two methods of planting, split plots were arranged in a randomized complete block design with three replications during four years (from 2013 to 2016). The main plot included two treatments of planting season consisted of autumn and spring, and the subplots included two methods of seed cultivation and seeding. Analysis of variance was used to compare significant differences between treatments, and distribution of mean treatments was analyzed by Duncan test. The results showed that there was a significant difference between the average number of available plant stands in different treatments including autumn seed sowing, autumn seed spreading, spring seed sowing and spring seed spreading at 1% level (P≤ 0. 01). It means that its cultivation type and season have different performance on plant coverage. In addition, there was a significant difference between the plots at 1% level, which in fact can depend on the implementation of the treatments in each plot. Finally, it was found that Astragalus curvirostris achieved the best level of success in autumn and the seed sowing method.
Keyword(s): Astragalus curvirostris,seed sowing,seed spreading,rangeland,season of cultivation,Lorestan
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