Showing 4 results for tarazkar
Mr. Hassan Azarm, Dr Mohammad Hassan tarazkar,
Volume 20, Issue 3 (Autumn 2020 2020)
Abstract
The aim of this study is to examine the factors affecting undernourishment in Iran during 1994-2015. To this end, bound test in Auto Regressive Distributive Lag (ARDL) approach is used to check the co-integration of the variables under study. Results reveal that faster economic growth leads to larger improvements in undernourishment rates. Therefore, increased economic growth can accelerate the effects of food policies aimed at reducing undernourishment. In addition, net official development assistance can reduce undernourishment. Moreover, unemployment rate and children proportion have positive effects on the undernourishment in short- and long-run. Accordingly, 1% increase in both unemployment rate and children proportion lead to 0.26% and 0.1% growth in undernourishment, respectively. Hence, improvement of business environment by increasing sustainable employment can reduce the annual undernourishment rates in Iran. On the contrary, the per capita health expenditure in both short- and long-term has no significant effect on reducing undernourishment in Iran. It seems that one of the possible reasons for ineffectiveness of per capita health expenditure on reducing undernourishment is the misallocation of health expenditure in the country. Therefore, the amount and orientation of health expenditure should be revised.
Volume 23, Issue 3 (5-2021)
Abstract
To remain viable in facing with increasing costs, farmers need to increase irrigation Water Productivity (WP) and save Virtual Water (VW). To evaluate the WP and VW for five barley cultivars (Reyhan, Nimrooz, Valfajr, Zehak, and Yusof) under different irrigation regimes [well-watered (100% Field Capacity; FC), mild water stress (75% FC), severe water stress (50% FC), and extremely severe water stress (25% FC)], a two-year field experiment was laid out in Darab, Fars Province, Iran, during 2014 and 2015 growing seasons. Results showed that change in moisture stress from well-watered to extremely severe water stress, was associated with a significant increase in WP and Economic Water Productivity (EWP) for straw and biological yield. A positive linear relationship was found between grain yield and VW, and the lowest VW was found in the range of 3,314 to 3,451 kg ha-1 of grain yield. Interestingly, for all irrigation regimes, Zehak and Yusof cultivars had greater WP for the grain yield. Furthermore, VW for biological yield of Yusof cultivar sharply decreased from 0.410 m3 kg-1 in well-watered treatment to 0.164 m3 kg-1 under extremely water stress conditions in both years. Comparison of Zehak and Yusof cultivars with Reyhan, Nimrooz and Valfajr showed that under water stress conditions, the first two cultivars showed significantly lower VW for the grain yield than the other cultivars. Indeed, Yusof and Zehak cultivars showed the lowest Economic Virtual Water (EVW), which was in the range of 0.054 to 0.091 m3 1,000 Rials-1, under extremely water stress conditions. Thus, to achieve optimum EWP and EVW and attaining stable yields under semi-arid conditions, suitable barley cultivars such as Zehak and Yusof could be irrigated with less water (i.e. 25 to 50% FC).
Volume 25, Issue 3 (5-2023)
Abstract
Adoption of multiple climate change adaptation strategies is the most important solution to mitigate the negative consequences of climate change. Therefore, in the present study, economic and social characteristics that affect the intensity of adaptation strategies in the Bakhtegan-Tashk Basin, Iran, were examined using an ordered probit model. A total of 300 farmers were selected using a multi-stage sampling method. The results showed that household income level, access to the credit, availability of irrigation water, number of crops, and farmer membership in agricultural extension classes had significant positive effects on the intensity of adaptation to climate change. Therefore, it is suggested that the government facilitates the use of different climate change adaptive strategies by increasing financial incentives. Also, changing the cropping pattern by planting less water demanding crops that are appropriate for the region is recommended.
Volume 26, Issue 6 (11-2024)
Abstract
Food security is a critical issue in the Middle East and North Africa (MENA) region due to its population growth, as well as geographical and climatic conditions. From one point of view, most of the countries in the region benefit from an abundance of natural resources centered on fossil fuels. From another point of view, environmental issues, particularly emissions caused by production activities, and the pressures caused by climate variability, highlight the importance of food security. Hence, the effects of climate change, energy consumption, environmental pollution and other control variables on food security in the MENA region were explored from 1990 to 2019. According to the cross-section dependency, the second-generation panel CS-ARDL (Cross-Sectional Autoregressive Distributed Lag) estimator was employed. The empirical results indicate that energy consumption, crop production land, CO2 emissions, and precipitation have a significant positive effect on crop production index, as index of food security. Additionally, urbanization and mean temperature have detrimental effects. The findings from Dumitrescu and Hurlin causality tests indicated that crop land and precipitation have a unidirectional causal effect on food security, whereas energy consumption, CO2 emissions, urbanization, and mean temperature have a bidirectional causal relationship with food security. These findings imply that while maintaining the level of agricultural production and increasing it, the climate effects and environmental aspects of production should not be overlooked.
