Sensitivity analysis of energy inputs for barley production in Hamedan Province of Iran

Mobtaker, Hassan Ghasemi; Keyhani, Alireza; Mohammadi, Ali; Rafiee, Shahin; Akram, Asadollah

doi:10.1016/j.agee.2010.03.011

Cited by 193 publications

(83 citation statements)

References 23 publications

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“…It is concluded that the energy ratio can be increased by raising the crop yield and/or by decreasing energy input consumption. Similar results such as 0.74 for cotton (Yilmaz et al, 2005), 1.25 for potato (Mohammadi et al, 2008), 2.86 for barley Ghasemi Mobtaker et al, 2010), 0.76 for cucumber, 0.61 for eggplant, 0.99 for pepper (Ozkan et al, 2004) have been reported for different crops. The average energy productivity of garlic was 0.41 kg MJ -1 .…”

Section: Analysis Of Input-output Energy Use In Garlic Productionsupporting

confidence: 79%

An Analysis of Energy Use and Estimation of a Mechanization Index of Garlic Production in Iran

Samavatean¹,

Rafiee²,

Mobli³

2011

JAS

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This paper studies the energy balance between the input and the output per unit area for garlic in Hamedan province of Iran. In this study, data were collected by using random sampling method for 136 face to face questioners. Results showed that the highest share of energy consumption belongs to chemical fertilizers (41.7%) followed by diesel (13.94%). The results indicated that a total energy input of 40307.89MJ ha -1 was consumed for garlic production. The energy productivity and net energy value were estimated as 0.416 kg MJ -1 and-13477.82MJ ha -1 , respectively. The ratio of energy outputs to energy inputs was approximately 0.665. The benefit-cost ratio was estimated as 1.36.mechanization degree (MD) was calculated for plowing and disk border were 100% and 20.65%, as the highest and lowest, respectively. The farms of between two to three hectares with 0.89 highest mechanization index (MI) and those Between one to two hectare with 0.6 lowest MI were remarkable.

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Section: Analysis Of Input-output Energy Use In Garlic Productionsupporting

confidence: 79%

An Analysis of Energy Use and Estimation of a Mechanization Index of Garlic Production in Iran

Samavatean¹,

Rafiee²,

Mobli³

2011

JAS

Self Cite

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“…The excess use of resources and scope to increase the productivity or conserve the energy input without affecting the productivity, thereby enhancing the efficiency of energy use, was viewed by many researchers (Kutala 1993;Refsgaard et al 1998;Chauhan et al 2006;Mobtaker et al 2010;Mohammadi et al 2011;Mousavi-Avval et al 2011a, b). An analysis of input-output of energy is used in determining the effects of production on the use of energy in various crops.…”

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confidence: 99%

Assessment of energy use pattern for tomato production in Iran: A case study from the Marand region

Jadidi¹,

Sabuni²,

Homayounifar³

et al. 2012

Res. Agric. Eng.

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Jadidi M.R., Sabuni M.S., Homayounifar M., Mohammadi A., 2012. Assessment of energy use pattern for tomato production in Iran: A case study from the Marand region. Res. Agr. Eng., 58: 50-56.The aim of the contribution was to determine energy consumption of input and output used in tomato production and to optimize the energy inputs in the Marand region, Iran. The study also sought to analyse the effect of farm size on energy use and input costs based on tomatoes production and to reveal the relationship between energy inputs and yield by developing mathematical models. Questions about energy management present very interesting and actual topic in this time. The results revealed that tomato production consumed a total of 65,238.9 MJ/ha of which fertilizers were 50.98% followed by water for irrigation (20.67%). Output-input energy and energy productivity were found to be 0.59 and 0.74 kg/MJ, respectively. The results of energy optimization showed that using existing energy inputs, the yield of tomato can be increased by 45.2% in small farms, 43.5% in medium farms and 30% in large farms. The rate of direct, indirect, renewable and non-renewable energy forms were found to be 37.2, 62.8, 30.9 and 69.1% of total energy input, respectively. The main non-renewable inputs were chemical fertilizers and diesel fuel, management of plant nutrients and proper machinery selection to reduce diesel fuel use would increase rate of renewable energy.

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“…Hamadan Province has a population of 1.7 million residents with 93935 farmers, who produce about 21% of the country's potato production (Anonymous, 2016). Hamadan region has an area of 1,949,400 ha and the farming area is 1,008,038 ha (51.7%) (Ghasemi Mobtaker, 2010). The mean annual precipitation over the last 50 years has been 334.1 mm.…”

Section: The Study Areamentioning

confidence: 99%

Environmental Impact Assessment (Eia) of Alternative Potato Cropping Systems in Hamadan Province, Iran

Rezaei¹

2018

Appl. Ecol. Env. Res.

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Abstract. Potato is a staple food crop and a most important agricultural commodity in Hamadan Province, Iran. However, the province is facing such problems as water scarcity, nitrate pollution, and plant disease epidemics. This study explored the environmental impact assessment of potato cropping systems in Hamadan Province, Iran. To this purpose, 8 agri-environmental indicators were used for the EIAs of 4 potato cropping systems. These indicators included environmental potential risk indicator for pesticides, water use efficiency, nitrogen leaching, CO 2 emission, energy use, biodiversity, golden potato cyst nematode, and land use. The 4 systems included traditional potato system, quasi-industrial potato system, industrial potato system, and government-promoted potato system and 5 groups of features were used to describe the mentioned systems: (1) irrigation methods; (2) seed placement; (3) machinery use; (4) agrochemical use; and (5) crops rotation. The results revealed that the traditional potato system had the lowest negative impact on the environment. Of the potato production systems studied, the government-promoted potato system, quasi-industrial potato system, and industrial potato system had successively fewer negative effects on the environment. Finally, some strategies are recommended for designing a new benchmark encompassing environmental thresholds using agri-environmental indicator scores and their relationships.

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Sensitivity analysis of energy inputs for barley production in Hamedan Province of Iran

Cited by 193 publications

References 23 publications

An Analysis of Energy Use and Estimation of a Mechanization Index of Garlic Production in Iran

An Analysis of Energy Use and Estimation of a Mechanization Index of Garlic Production in Iran

Assessment of energy use pattern for tomato production in Iran: A case study from the Marand region

Environmental Impact Assessment (Eia) of Alternative Potato Cropping Systems in Hamadan Province, Iran

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