Should crop sequences in Western Australia include more lupins?

IF 1.8 4区 农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY Crop & Pasture Science Pub Date : 2023-01-01 DOI:10.1071/cp23110
C. d’Abbadie, S. Kharel, R. Kingwell, A. Abadi Ghadim
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Abstract

Context Reducing greenhouse gas emissions is an increasing priority for Australian grain producers. Could substituting lupins for canola, as a rotational break crop, enable farmers to reduce their emissions by less use of nitrogenous fertilisers?Aim This study aims to identify if replacing canola with lupins in rotations at a range of locations in Western Australia’s grainbelt is environmentally and economically attractive.Methods Bio-economic simulation modelling is used to examine the gross margins and emissions associated with replacement of canola by lupins at 14 locations in the grainbelt of Western Australia in various land use sequences.Key results Replacing canola with lupins unambiguously leads to reduced emissions in crop sequences at all locations considered. However, the higher gross margins from canola production cause lupins to only be a preferred break crop option at 4 of the 14 locations. Even with various plausible incentives to favour lupins, they remain economically unattractive at most locations other than those where lupins are well adapted to the environment.Conclusions Lupins’ current lack of commercial attractiveness for farmers limits its role in emissions reduction in the region’s farming systems.Implications The profitability of lupins needs to increase if lupins are to be widely readopted. This requires developing higher yielding lupin varieties, grain quality improvements, and policy changes to reward lower emission cereals. However, this study shows these changes, apart from yield improvement, are unlikely in the short term. At locations with suitable soils alternative pulse crops may offer higher gross margins whilst delivering emission reductions.
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西澳大利亚的作物序列应该包括更多的羽扇豆吗?
减少温室气体排放是澳大利亚粮食生产商日益重视的问题。用羽扇豆代替油菜籽作为轮作作物,能使农民减少氮肥的使用,从而减少碳排放吗?本研究旨在确定在西澳大利亚谷物带的一系列地点轮作用羽扇豆代替油菜籽是否具有环境和经济上的吸引力。方法采用生物经济模拟模型,对西澳大利亚州14个谷带不同土地利用序列中油菜被羽扇豆替代的毛利率和排放量进行了研究。用羽扇豆素代替油菜籽无疑会减少在所考虑的所有位置的作物序列中的排放。然而,油菜籽生产的较高毛利率导致羽扇豆仅在14个地点中的4个地点成为首选的中断作物选择。即使有各种貌似合理的激励措施来支持羽扇豆,在大多数地方,除了那些羽扇豆能很好地适应环境的地方,它们在经济上仍然没有吸引力。Lupins目前对农民缺乏商业吸引力,限制了它在该地区农业系统中减排的作用。如果羽扇豆被广泛采用,羽扇豆的盈利能力需要增加。这需要开发产量更高的扁豆品种,改善粮食质量,并改变政策以奖励低排放的谷物。然而,这项研究表明,除了产量提高之外,这些变化在短期内不太可能发生。在土壤适宜的地方,替代脉冲作物可以提供更高的毛利率,同时减少排放。
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来源期刊
Crop & Pasture Science
Crop & Pasture Science AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
4.20
自引率
15.80%
发文量
111
审稿时长
3 months
期刊介绍: Crop and Pasture Science (formerly known as Australian Journal of Agricultural Research) is an international journal publishing outcomes of strategic research in crop and pasture sciences and the sustainability of farming systems. The primary focus is broad-scale cereals, grain legumes, oilseeds and pastures. Articles are encouraged that advance understanding in plant-based agricultural systems through the use of well-defined and original aims designed to test a hypothesis, innovative and rigorous experimental design, and strong interpretation. The journal embraces experimental approaches from molecular level to whole systems, and the research must present novel findings and progress the science of agriculture. Crop and Pasture Science is read by agricultural scientists and plant biologists, industry, administrators, policy-makers, and others with an interest in the challenges and opportunities facing world agricultural production. Crop and Pasture Science is published with the endorsement of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Academy of Science.
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