Energy comparison of two rice cultivation systems

Eskandari, Hamdollah; Attar, Sajjad

doi:10.1016/j.rser.2014.10.050

Cited by 57 publications

(33 citation statements)

References 17 publications

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“…Compared to conventional agriculture, it has been pointed out that CA maintains or increases crop yields, improves soil fertility and reduces soil erosion (Kassam, Friedrich, Shaxson, & Pretty, 2009) under certain conditions (Pittelkow et al, 2014). Changing traditional tillage systems into conservational tillage, which may include no till, strip till, ridge till and mulch till, is an effective factor in decreasing diesel fuel energy consumption because of the resulting decrease in tillage operations, change in irrigation methods and reduction in human labour (Eskandari & Attar, 2015). In fact, fewer trips across the field save time and money (lowering fuel, labour and machinery maintenance costs) and reduce soil compaction that can interfere with plant growth.…”

Section: Conservation Agriculturementioning

confidence: 99%

A review of social and economic performance of agroecology

D’Annolfo

Gemmill-Herren

Graeub

et al. 2017

International Journal of Agricultural Sustainability

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Agroecology potentially offers a sustainable path to agricultural development as it integrates ecological principles and social and economic concerns into agri-food systems. While many descriptive studies have documented the experience of farming communities using agroecological approaches, evidence on social and economic indicators of agroecology is poorly documented in a quantitative sense. The present study aims to build a framework and provide a quantitative overview of the effects of adopting selected agroecological practices at the farm level. A literature review has been conducted in order to identify scientific work addressing the contribution of agroecology to a set of socioeconomic indicators, which affect human, financial and social assets. Data extracted from 17 peer-reviewed papers were analysed using two techniques: vote counting and general linear mixedeffects models on effect sizes. We found preliminary evidence of agroecology's positive contribution to improving financial capital. However, data extracted does not provide meaningful information on other capital endowments (human and social). This is mainly due to the fact that there is a lack of data concerning the socioeconomic impact of agroecology. In addition, qualitative methods (e.g. Qmethodology) should be integrated into further research in order to capture farmer perspectives.

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Section: Conservation Agriculturementioning

confidence: 99%

A review of social and economic performance of agroecology

D’Annolfo

Gemmill-Herren

Graeub

et al. 2017

International Journal of Agricultural Sustainability

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“…Soni et al [4] and Mohammadi et al [9] have studied energy and environmental performances of rice production, while Khakbazan et al [10] , Khoshnevisan et al [11] and Mohammadi et al [9] studied wheat production system. Similarly, energy input-output analyses of rice and wheat crops are well documented in the literature such as in: rice production system [12][13][14][15] and in wheat production system [12,16,17] . But none of such analysis is known to be reported on these aspects in the context of Nepal.…”

Section: Introduction mentioning

confidence: 99%

Energy balance and environmental impacts of rice and wheat production: A case study in Nepal

Pokhrel

Soni

2019

International Journal of Agricultural and Biological Engineering

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Energy and environment are the key concerns in todays' agriculture. This study investigated energy balance and environmental impact of rice and wheat production systems in terms of energy ratio, impact of energy inputs to the crop yield and CO 2 e (carbon dioxide equivalent) emissions under terai and hill geographical regions of Nepal. Primary data were collected from 139 randomly selected farms by using structured questionnaire. The results revealed that the total energy consumption in rice and wheat production were 9.70 GJ/hm 2 (terai) to 11.78 GJ/hm 2 (hill) and 8.40 GJ/hm 2 (hill) to 10.95 GJ/hm 2 (terai), respectively. The energy balance of rice and wheat production were found 46.33 GJ/hm 2 (hill) to 59.29 GJ/hm 2 (terai) and 27.14 GJ/hm 2 (terai) to 38.52 GJ/hm 2 (hill), respectively, where energy use efficiency in terai and hill were found to be 7.14 and 4.97 in rice, and 3.49 and 5.59 in wheat, respectively. The contribution of fertilizer on impacts was significant among other energy inputs in rice and wheat production in both geographical regions. The CO 2 e emissions from rice and wheat were higher by 52% and 78% in hill as compared to respective crop rice (1786 kg CO 2 e/hm 2) and wheat (843 kg CO 2 e/hm 2) in terai. This study showed that rice production system in terai is more energy and environmentally efficient, whilst wheat production in hill is more energy efficient.

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“…Among the numerous studies that have measured the energy efficiency of rice production (e.g., [8][9][10][11][12][13][14][15][16]), several researchers have examined whether the expansion of farm size improves the energy efficiency of rice production [17][18][19]. Nassiri and Singh [17] found that an increase in the scale of rice farming does not improve the energy efficiency of rice production in India.…”

Section: Introductionmentioning

confidence: 99%

Energy Efficiency of Intensive Rice Production in Japan: An Application of Data Envelopment Analysis

Masuda

2018

Sustainability

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Intensive rice production has contributed to feeding the world's growing world population, but it has also increased fossil energy consumption. This paper examines the effect of increasing the scale of rice farming on the energy efficiency of intensive rice production in Japan. A data envelopment analysis (DEA) approach is used to calculate energy efficiency scores and identify operational targets. A window analysis technique is applied to the 2005-2011 statistical data, with nine scales of rice farming, ranging from <0.5 ha to ≥15 ha. Six energy inputs (fossil fuels, electricity, chemical fertilizers, pesticides, agricultural services, and agricultural machinery) and the weight-based rice yield are selected as the DEA inputs and the DEA output, respectively. The results show that the energy efficiency scores range from 0.732 for farms of 1 ha to <2 ha, to 0.988 for farms ≥15 ha. Overall, increasing the scale of rice farming in Japan improves energy efficiency because of a great reduction in the energy consumed per unit area by agricultural machinery and agricultural services. These findings suggest that increasing the scale of farming is an effective way to enhance the energy efficiency of highly mechanized rice production in developed countries, such as Japan.

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Energy comparison of two rice cultivation systems

Cited by 57 publications

References 17 publications

A review of social and economic performance of agroecology

A review of social and economic performance of agroecology

Energy balance and environmental impacts of rice and wheat production: A case study in Nepal

Energy Efficiency of Intensive Rice Production in Japan: An Application of Data Envelopment Analysis

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