Zeinab Shabani Koshalshahi; Amir Mansour Tehranchian; Seyed Mojtaba Mojaverian
Volume 5, 17(3) , December 2015, Pages 24-13
Abstract
The purpose of the present study is investigating the impact of monetary policy on private sector investment of Iran,s agricultural subsectors (1978-2011). Therefore, the Generalized Method of Moments (GMM) is used. Obtained results indicated that the monetary policy in all 3 subsectors has a positive ...
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The purpose of the present study is investigating the impact of monetary policy on private sector investment of Iran,s agricultural subsectors (1978-2011). Therefore, the Generalized Method of Moments (GMM) is used. Obtained results indicated that the monetary policy in all 3 subsectors has a positive and significant impact on private sector investment. The effectiveness of monetary policy on private sector investment of fisheries subsector has been evaluated more than other ones. So, following the imposition of monetary policy by the government, private sector investment in the fisheries subsector will increase more than two other subsectors. Elasticity of investment to interest rate and inflation is negative and significant, and to exchange rate and price index, is positive and significant. The effect of government investment in all 3 subsectors is negative and significant. According to emphasis of Article 143 of the Law of Fifth Development Plan on state support of the private sector investment in order to promote the agricultural sector's added value and according to results, the recommendation is that policy makers should pay attention to facilitate the flow of supplying credits to the agricultural sector.
Abolfazl Mahmoodi; Aboozar Parhizkari
Volume 5, 17(3) , December 2015, Pages 40-25
Abstract
In this study, climate change impact on product yield and farmer's gross profit of Qazvin plain were studied. In this regard, first the trend of variables of temperature and precipitation changes during 1991-2011 were reviewed. Then, using regression analysis effect of temperature and precipitation variables ...
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In this study, climate change impact on product yield and farmer's gross profit of Qazvin plain were studied. In this regard, first the trend of variables of temperature and precipitation changes during 1991-2011 were reviewed. Then, using regression analysis effect of temperature and precipitation variables on yield and acreage of wheat, barley, corn, canola, tomatoes, beets and alfalfa was investigated. Then, by entering the results of regression analysis in the positive mathematical programming model, the scenario of one degree increase in temperature and one mm decrease of rainfall on crop yield were analyzed. Results of regression analysis showed that during the study period, the increase in temperature and the decrease in precipitation. Also, results of regression analysis showed that changes in temperature and precipitation in Qazvin plain has a significant effect on products yield. Results of PMP model showed that with one degree increase in temperature and one mm decrease of rainfall, the yield of barley, corn, beet and alfalfa respectively 15, 24, 13 and 17 percent increase and the yield of wheat, tomatoes and canola respectively 29, 20 and 23 percent decrease. Also, farmer's gross profit compared to the base year 10/5 percent increases. In the end, due to prematurity of climate change in regional planning, to increase agricultural production in the Qazvin plain it was proposed that the first it should be considered the performance improve operating in per unit area (ha) and development the under cultivation of crops such as corn, beet and alfalfa be placed at the next priority.
Saeed Shavvalpour; Armin Jabbarzadeh; Hossein Khanjarpanah
Volume 5, 17(3) , December 2015, Pages 45-41
Abstract
Global market of strategic agricultural commodities such as soybean and wheat, is influenced by oil price fluctuations and this issue affects on policymakers and producers decisions. In this paper, with considering the importance of oil price shocks, it is tried to realize the impact of oil market risk ...
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Global market of strategic agricultural commodities such as soybean and wheat, is influenced by oil price fluctuations and this issue affects on policymakers and producers decisions. In this paper, with considering the importance of oil price shocks, it is tried to realize the impact of oil market risk on the agricultural commodities market. For this aim, daily returns of global price of soybean and wheat as the most important agricultural beans and Brent oil in the period of 1 May 2007 to end of 2014 are applied in modelling. Vector Error Correction Model (VECM) and Multivariate Generalized Autoregressive Conditional Heteroskedasticity (MGARCH) with VECH, BEKK and CCC methods are applied for investigating of relationships between markets. The results specify that a long run relationship is existed between the studied markets. Also, CCC method has been the best method for risk spillover modelling, which its results show that positive and significant relationship is exited between crude oil and agricultural commodities markets.
Hamid Sepehrdoust; Saber Zamani Shabkhaneh
Volume 5, 17(3) , December 2015, Pages 70-57
Heshmatollah Asgari; Roohollah Noor Mohammadi
Volume 5, 17(3) , December 2015, Pages 78-71
Abstract
Considering the highly importance of the agricultural sector in the provincial economy of Ilam and the emergence of awareness of demands for the forms of energy in the mentioned sector, as well as awareness of the price liberalization policies applied on the forms of energy, the present study aims to ...
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Considering the highly importance of the agricultural sector in the provincial economy of Ilam and the emergence of awareness of demands for the forms of energy in the mentioned sector, as well as awareness of the price liberalization policies applied on the forms of energy, the present study aims to investigate the demands for the major energy consumptions in the agricultural sectors. The aim of this study is to determine the influencing factors on energy consumption patterns; and to determine the complementary and altering energy relations, using the estimating demand for different forms of energy. This study applies the Almost Ideal Demand System to estimate the elasticity of the forms of energy. The achieved results exhibit the adversity and conformity of all the energy own-price elasticities to the demand theory. Results on the cross elasticity indicate to large extant identical in both restricted and unrestricted cases and to some extant low for the cross elasticity between the forms of energy. Moreover, the results indicate positive and less than one for the income elasticity of energy in the restricted case, that are considered as an essential commodity.
Ebrahim Moradi; Mosayeb Pahlavani; Ahmad Akbari
Volume 5, 17(3) , December 2015, Pages 90-79
Abstract
Producers, who have lower efficiency in wheat production, can use the experiences of other producers and increase their efficiency over time. based on existing theories, probably producers with low initial levels of efficiency will have grown their efficiency faster than producers that have high levels ...
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Producers, who have lower efficiency in wheat production, can use the experiences of other producers and increase their efficiency over time. based on existing theories, probably producers with low initial levels of efficiency will have grown their efficiency faster than producers that have high levels of efficiency and a convergence over time will be between them. To investigate the convergence of cost efficiency, information on input prices, yield per hectare and production cost per hectare for irrigated wheat, were collected for 28 provinces in a 10-years period. By studying different methods of stochastic frontier cost function with panel data, "true random effects Model" of stochastic frontier method was selected. The model was estimated by using Simulation Halton method. Then Cost efficiency was calculated for each province. Beta and Sigma convergence test was conducted on cost efficiency. Results show that, changes of land rent (price) has the greatest impact and changes in the price of fertilizer per hectare has the lowest impact on production cost per hectare. Also, we find that There is Beta convergence (convergence of efficiency increase over initial levels) and Sigma convergence (convergence dispersion efficiency over time), between different provinces to improve cost efficiency in wheat production.
Zahra Hosseinpur; Mohammad Hossein Menhaj; Mohammad Kavoosi-Kalashami
Volume 5, 17(3) , December 2015, Pages 104-91
Abstract
Over the past two decades, due to the global water scarcity, the role of WUAs in the farmers’ participation in the agricultural water resources management has received much attention. The purpose of this descriptive study was to evaluate the factors affecting the participation of the WUAs members ...
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Over the past two decades, due to the global water scarcity, the role of WUAs in the farmers’ participation in the agricultural water resources management has received much attention. The purpose of this descriptive study was to evaluate the factors affecting the participation of the WUAs members in the agricultural water management of Esfarayen County during 2014-2015. The statistical population included all members of two WUAs Esfarayen County (N: 2440) among which 335 people were selected as the statistical population size using Cochran’s formula, then the sample was identified using stratified sampling method. The Validity of the questionnaire was supported by the experts’ views, and the reliability of research tools was obtained by doing a preliminary test through completing 30 questionnaires and the Cronbach’s alpha value was obtained 0.88 using SPSS. Data analysis was performed using SPSS20 and Excel2010. To examine the relationship between the independent and dependent variables, the Spearman correlation analysis test, the Cramer’s coefficient test, the Gamma coefficient and the chi-square test were used. Results indicated a significant positive correlation between the studied economic factors (farmers’ income level, acreage owned by farmers, water prices), volume of water used, types of irrigation systems, and farmers’ individual characteristics including education level and gender, and the variable of the level of farmers’ participation in the WUAs. Moreover, there was a significant negative correlation between age and the level of members’ participation.
