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        1 - A comprehensive map and prioritization of the provinces producing medicinal plants in the country based on the indicators of the physical advantage of production
        darab yazdani majid shahriari
        Determining the relative advantage of agricultural products in different regions is one of the important dimensions of agricultural policy and planning, based on which the appropriate pattern of production and cultivation can be achieved in different regions according t More
        Determining the relative advantage of agricultural products in different regions is one of the important dimensions of agricultural policy and planning, based on which the appropriate pattern of production and cultivation can be achieved in different regions according to the conditions in each region. The current research aims to prioritize the provinces that produce medicinal plants in the country based on the indicators of the physical advantage of production (advantage of scale, efficiency advantage and collective advantage) and their fluctuation coefficient during the period of 2011-2018 using the numerical taxonomy method. The results showed that during a period of 18 years, South Khorasan, Jiroft and Razavi Khorasan provinces had the highest average scale advantage index (SAI) and the highest average efficiency advantage (EAI) was also in Alborz, West Azarbaijan and Lorestan provinces with 13/67 respectively. , 6/47 and 6/19 were obtained. According to the results of collective advantage (AAI), the provinces of Hamadan, Semnan and Sistan and Baluchistan have the lowest fluctuation coefficient of collective index with 0.26, 0.28 and 0.33 and the provinces of Alborz, Jiroft and Sistan and Baluchistan with 31.40 respectively. 2.3 and 1.65 had the highest average collective advantage among all the provinces of the country. Finally, in order to summarize, using GIS software, a comprehensivemap of the country for medicinal plants was drawn based on the indicators of physical advantage. Manuscript profile
      • Open Access Article

        2 - Effect of Nitrogen and Manure Application on Agronomic Traits and Essential Oil content of Fennel (Foeniculum vulgare Mill.)
        Siamak  Shafeei Majid  Majidian Gholamreza  Mohsenabadi Hamed Kioumarsi
        Considering the adverse effects of chemical fertilizers on the environment, to evaluate the effect of different amounts of nitrogen fertilizer and manure on agronomic traits and essential oil content of Fennel, an experiment was conducted in Guilan Agricultural Research More
        Considering the adverse effects of chemical fertilizers on the environment, to evaluate the effect of different amounts of nitrogen fertilizer and manure on agronomic traits and essential oil content of Fennel, an experiment was conducted in Guilan Agricultural Research Center. In this experiment, pure nitrogen fertilizer was used at four levels of 0, 60, 120, and 180 kg ha-1and the manure was used at four levels of 0, 6, 12, and 18 tonsha-1. The results showed that the highest plant height, number of seeds per umbrella, and biological yield related to combined treatment were 180 kg of nitrogen with 18 tons of manure per hectare. Maximum number of umbrellas per plant, seed weight per plant, 1000 seed weight, and grain yield were obtained using 120 kg of pure nitrogen with 18 tons of manure, with the highest grain yield of 950.43 kg ha-1and minimum in control treatment was obtained in the amount of 655.4 kg ha-1. Highest percentage of essential oil and essential oil yield with the application of 60 kg of pure nitrogen with 18 tons of manure was obtained 1.946 % and 17.15 kg ha-1 respectively. According to the results, it seems that the application of manure can be an appropriate alternative to reduce the use of nitrogen fertilizer in the cultivation of fennel. The result showed that it is possible to reduce the use of chemical fertilizers by using animal manures and at the same time achieve optimal efficiency and reduce the adverse effects of chemical fertilizers. Manuscript profile