A field study of energy consumption in wheat production in Canterbury, New Zealand

Safa, Majeed; Samarasinghe, Sandhya; Mohssen, Magdy A. W.

doi:10.1016/j.enconman.2011.01.004

Cited by 50 publications

(38 citation statements)

References 14 publications

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“…Many studies have quantified the energy use and GHG emissions in agriculture and specifically, in wheat production, e.g., energy use and efficiency evaluation in wheat production in China [20], energy auditing in different cropping systems in India [3,15,[29][30][31][32][33][34][35][36], energy analyses and GHG emissions from different crops in Iran [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53], assessment of on-farm energy use and GHG emissions from wheat in New Zealand [1,18,54,55], analyses of agricultural energy in Bangladesh [56], energy input-output analysis in Turkey for production of cotton, vegetables, grapes, sugar beet and dry apricot [17,[57][58][59][60][61][62][63], effect of fertilizer management on GHG emissions in agriculture [64], energy and economic analyses for different vegetables in Indonesia [65] and estimation of energy use and CO 2 emissions in Thailand [66...…”

Section: Introductionmentioning

confidence: 99%

Investigation of Input and Output Energy for Wheat Production: A Comprehensive Study for Tehsil Mailsi (Pakistan)

et al. 2020

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The global increasing food demand can be met by efficient energy utilization in mechanized agricultural productions. In this study, input–output energy flow along with CO2 emissions for different wheat production cases (C-I to C-V) were investigated to identify the one that is most energy-efficient and environment-friendly case. Data and information about input and output sources were collected from farmers through questionnaires and face-to-face interviews. Input and output sources were converted into energy units by energy equivalents while CO2 emissions were calculated by emission equivalents. Data envelopment analysis (DEA) was conducted to compare technical efficiencies of the developed cases for optimization of inputs in inefficient cases. Results revealed that case C-Ⅴ (higher inputs, larger fields, the tendency of higher fertilizer application and tillage operations) has the highest energy inputs and outputs than the rest of the cases. Moreover, it possesses the lowest energy use efficiency and energy productivity. The highest CO2 emissions (1548 kg-CO2/ha) referred to C-Ⅴ while lowest emissions per ton of grain yield were determined in C-Ⅳ (higher electricity water pumping, moderate energy input). The grain yield increases directly with input energy in most of the cases, but it does not guarantee the highest values for energy indices. C-Ⅲ (moderate irrigations, educated farmers, various fertilizer applications) was found as an optimum case because of higher energy indices like energy use efficiency of 4.4 and energy productivity of 153.94 kg/GJ. Optimum input and better management practices may enhance energy proficiency and limit the traditionally uncontrolled CO2 emissions from wheat production. Therefore, the agricultural practices performed in C-Ⅲ are recommended for efficient cultivation of wheat in the studied area.

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Section: Introductionmentioning

confidence: 99%

Investigation of Input and Output Energy for Wheat Production: A Comprehensive Study for Tehsil Mailsi (Pakistan)

et al. 2020

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“…The total energy consumption of the total production area was calculated to be 13 Mt of oil equivalent per year. Safa et al (2009) reported that total input energy for irrigated and rainfed wheat production was 25,600 and 17,450 GJ/ha −1 , respectively, in New Zealand. In that research, chemical fertilizer and electricity played the most important role in irrigated farms output with 10,190 and 3430 GJ/ha −1 , respectively.…”

Section: Introductionmentioning

confidence: 99%

Estimation of energy flow and environmental impacts of quinoa cultivation through life cycle assessment methodology

Dehkordi

Forootan

2020

Environ Sci Pollut Res

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Quinoa is an adaptable plant that is rich in terms of nutritional properties. Currently, the promotion and cultivation of quinoa are expanding in Iran. The present study aimed to investigate the energy consumption of quinoa grain production and its environmental impacts through life cycle assessment. In this regard, in order to evaluate the environmental and energy indices, required data were collected from quinoa farmers in Isfahan. The high energy ratio (ER > 1) and positive net energy show that quinoa cultivation is efficient. Based on the results, irrigation water and nitrate fertilizer were identified as the major contributors to energy consumption. Based on the normalization method, the highest and lowest environmental impacts during the production process were related to the indices of marine aquatic ecotoxicity and ozone layer depletion, respectively. Results showed that in the global warming potential impact, 354 kg CO 2eq. were emitted per production of 1 tonne of quinoa grain. Diesel fuel and nitrogen fertilizer had a significant effect on most environmental impacts. Proper management of chemical fertilizers and agricultural machinery are key factors for sustainable cultivation of quinoa.

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“…Pellizzi et al [47] found that in Europe, for wheat-like cereals, about 2.5-4.3 GJ/ha of direct energy is used. Similarly, Safa et al [48] found that about 6.5 GJ/ha and 3.2 GJ/ha of direct energy (fuel and electricity) is used for irrigated and dryland wheat crops in New Zealand, respectively. Pellizzi et al's estimate is similar to our results from dryland and irrigated farming systems in the Northern Grain Region.…”

Section: How Our Results Compare With Other Studiesmentioning

confidence: 99%

An Assessment of Direct on-Farm Energy Use for High Value Grain Crops Grown under Different Farming Practices in Australia

et al. 2015

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Several studies have quantified the energy consumption associated with crop production in various countries. However, these studies have not compared the energy consumption from a broad range of farming practices currently in practice, such as zero tillage, conventional tillage and irrigated farming systems. This study examines direct on-farm energy use for high value grain crops grown under different farming practices in Australia. Grain farming processes are identified and "typical" farming operation data are collected from several sources, including published and unpublished literature, as well as expert interviews. The direct on-farm energy uses are assessed for 27 scenarios, including three high value grain crops-wheat, barley and sorghum-for three regions (Northern, Southern and Western Australia) under three farming conditions with both dryland (both for conventional and zero-tillage) and irrigated conditions. It is found that energy requirement for farming operations is directly related to the intensity and frequency of farming operations, which in turn is related to tillage practices, soil types, irrigation systems, local climate, and crop types. Among the three studied regions, Western Australia requires less direct on-farm energy for each crop, mainly due to the easily workable sandy soils and adoption of zero tillage systems. In irrigated crops, irrigation energy remains a major contributor to the total on-farm energy demand, accounting for up to 85% of total energy use.

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A field study of energy consumption in wheat production in Canterbury, New Zealand

Cited by 50 publications

References 14 publications

Investigation of Input and Output Energy for Wheat Production: A Comprehensive Study for Tehsil Mailsi (Pakistan)

Investigation of Input and Output Energy for Wheat Production: A Comprehensive Study for Tehsil Mailsi (Pakistan)

Estimation of energy flow and environmental impacts of quinoa cultivation through life cycle assessment methodology

An Assessment of Direct on-Farm Energy Use for High Value Grain Crops Grown under Different Farming Practices in Australia

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