Other subject about saffron
Surur Khorramdel; Parviz Rezvani Moghaddam; Afsaneh Amin Ghafori
Abstract
Monetary valuation of agroecoystem services makes them attractive for the society and policy makers should pay more attention to conservation of these services. In this study, the economic value of services as well as negative environmental externalities of saffron fields were estimated in the Khorasan ...
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Monetary valuation of agroecoystem services makes them attractive for the society and policy makers should pay more attention to conservation of these services. In this study, the economic value of services as well as negative environmental externalities of saffron fields were estimated in the Khorasan Razavi province during 2015. Information was extracted from questionnaires collected from 75 fields. Using these data, economic values (such as O2 production, food, biodiversity and tourism) together with environmental externalities (including greenhouse gas emission and N and P leakage) were computed based on international value of dollar. Based on the results of the study, the mean values of the agroecosystem services of saffron field such as O2 production, food, biodiversity and cultural services were estimated to be 54.21×106, 266.84×106, 60.24×106, 29.6×106 and 10.58×106 Rls ha-1.y-1, respectively. The shares of these services were up to 39, 35, 19 and 7 percent of total value, respectively. The ranges of environmental externalities such as greenhouse gas emission and N and P leakage were estimated to be -18.54×106 to -8.18×106 and -5.18×106 to -4.07×106 Rls ha-1.y-1. The mean value of the total agroecosystem services of saffron fields excluding externalities, were estimated to be 136.57×106 Rls ha-1 y-1.
Agriculture
Mehdi Nassiri Mahallati; Alireza Koocheki; Afsaneh Amin Ghafouri; Mansore Mahluji Rad
Abstract
In order to determine the optimal use of corm size and density, an experiment was conducted by central composite design at the Research Station, the Ferdowsi University of Mashhad, Iran, during two growing seasons of 2008-2009 and 2009-2010. The treatments were designed based on low and high levels of ...
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In order to determine the optimal use of corm size and density, an experiment was conducted by central composite design at the Research Station, the Ferdowsi University of Mashhad, Iran, during two growing seasons of 2008-2009 and 2009-2010. The treatments were designed based on low and high levels of corm size (3 and 7 g) and density (50 and 150 corm.m-2). Central point in each treatment was repeated 5 times and a total of 13 experimental treatments were designed. Economic yield, corm diameter, number of daughter corms, number of mother corms, number of flowers and fresh weight of flowers were measured as dependent variables, and the response surface of these variables to experimental factors was estimated by the polynomial regression model. The results indicated a positive effect of corm size and density on economic yield, corm diameter, dry weight of tunic, number of daughter corms, number of mother corms, number of flowers and fresh weight of flowers. The optimum level of corm size and density were 7 g and 250 plant.m-2, respectively.
