Mohammad Jafari; ِAli Tavili; Yahya Esmaeilpour; Hossein Azarnivand; Mohammad Zare Chahouki; Hamid Reza Asghari
Abstract
Abstract In this study the effects and costs of application of two kinds of super absorbent polymer on the establishment and surviving of seedlings was investigated. Experiments were done in the field and on two kind of soil with different salinity (EC: 4.5 and 8 dsm-1). The results showed: the establishment ...
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Abstract In this study the effects and costs of application of two kinds of super absorbent polymer on the establishment and surviving of seedlings was investigated. Experiments were done in the field and on two kind of soil with different salinity (EC: 4.5 and 8 dsm-1). The results showed: the establishment rate of seedling in control was about 40 percent. The percentage of seedling establishment in the hydrogel treatments significantly increased and statistically is equal to the optimal surviving of the seedling (80%). Soil salinity on seedling establishment in the same treatments did not produce significant differences. The results were compared with a similar project to determine the costs and benefits. Based on the results a 30 percent reduction in water usage per round and 33 to 50 percent reduction in the number of irrigation replicate were recorded. The costs in compare to the normal project varied from -2 to 29 percent respectively for treatment Herbosorb® 0.5% and Aquasorb 1%. The treatments Herbosorb® and Aquasorb with usage level of 0.5% caused about 2.5 percent for each one percent increasing in the cost. There is no significant increase in the percentage of seedling survival by using 1% super-absorbent compared to 0.5 percent.
Reyhane Azimi; Mohammad Jankju; Hamid Reza Asghari
Abstract
Improved pasture establishment in plants, especially in arid and semi-arid is very important Application of biological fertilizers in pasture can be considered as a useful approach. that is one of the sources of the symbiotic fungus.. The purpose of the present study was to investigate the possibility ...
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Improved pasture establishment in plants, especially in arid and semi-arid is very important Application of biological fertilizers in pasture can be considered as a useful approach. that is one of the sources of the symbiotic fungus.. The purpose of the present study was to investigate the possibility of enhancing seedling establishment and growth rate of Bromus kopetdaghensis under natural habitats by inoculation with mycorrhiza species, Seeds of alfalfa were sown under greenhouse for 20 days and inculcated with two species of Glomus intraradices and Glomus mosseae. After one month growth, the inoculated seedlings were transplanted into the natural as sub plots as split plot based on RCBD (Randomized complete block design) were evaluated with three replication. Inoculation percent with G.mosseae was 62/7 % and with of G. intraradices 81/3%. Symbiosis increased establishment of alfalfa at the early and late growth stages, with stronger effects G,intra than G.mosseae. Furthermore leaf and root dry matter, total dry matter and the ratio of above ground to underground plant parts was increased in association with G. intraradices, where as such effects were not associated with G.mosseae. In conclusions, it Glomus intraradices can be used as a biological fertilizer for establishment of alfalfa in semiarid rangeland of Bahar Kish rangeland, Quchan.
