نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
2 عضو هیئت علمی گروه اقتصاد کشاورزی دانشگاه علوم کشاورزی و منابع طبیعی گرگان
3 دانشیار اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Background and objectives: Growth in total factor productivity (TFP) is widely recognized as a key driver of economic development and sectoral competitiveness. Enhancing TFP requires a clear understanding of the determinants of production efficiency and productivity growth. Accordingly, this study investigates the impact of government support policies on the total factor productivity of cotton production in Iran.
Materials and methods:
To estimate cotton TFP in Iran over the period 1994–2022, data on output levels and input use in cotton production were utilized. In addition to government support policies, several macroeconomic and environmental variables namely inflation, trade liberalization, and rainfall were incorporated to assess their effects on TFP. Cotton TFP was first calculated using the Divisia index approach through estimation of a production function and corresponding partial output elasticities. Government support to cotton producers was quantified using the Producer Support Estimate (PSE) index. Subsequently, an Autoregressive Distributed Lag (ARDL) model was employed to analyze the short- and long-run impacts of government support policies and other explanatory variables on cotton TFP.
Results: The results indicate that cotton TFP exhibited an overall upward trend during the period 1994–2022, with an average annual growth rate of 11.1%. Government support to cotton producers, as measured by the PSE index, also showed an increasing trend, growing at an average annual rate of 19.06%. ARDL estimation results reveal that, in the long run, both the producer support estimate (PSE) and trade openness index (TOI) exert a positive and statistically significant lagged effect on cotton TFP. In contrast, in the short run, only trade openness (TOI) has a positive and significant impact on TFP. Quantitatively, a 1% increase in government support and trade liberalization in the long run leads to increases in TFP of 0.03% and 0.55%, respectively.
Conclusion: Cotton producers in Iran face multiple production constraints, including limited access to improved seed, pesticides, chemical fertilizers, modern machinery, and advanced production technologies. The findings of this study demonstrate that government support policies and trade liberalization play a significant role in alleviating these constraints, fostering sectoral development, and enhancing total factor productivity. Therefore, alongside investments in infrastructure development, technological upgrading, and farmer training, it is recommended that policymakers design and implement more effective and targeted support policies to strengthen cotton production and sustainably improve TFP in Iran.
کلیدواژهها [English]
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