Integrating long fallow into wheat-based cropping systems in Western Australia: Spatial pattern of yield and economic responses

Chen, Chao; Fletcher, Andrew; Ota, Noboru; Oliver, Yvette; Lawes, Roger

doi:10.1016/j.agsy.2022.103561

Cited by 9 publications

(2 citation statements)

References 56 publications

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“…By upgrading the quality of farmland and making up for the shortcomings of agricultural infrastructure, the CRFS policy improves agricultural production efficiency and promotes pesticide and chemical fertiliser reduction as well as the green and low-carbon development of agriculture. The study of [46] also confirms that the fallow system wheat planting system can effectively improve wheat yield. The fallow crop rotation system reduces the mismatch of agricultural resources, further promotes agricultural technological innovation, improves the fertility of land resources, and reduces the waste of labour resources.…”

Section: Base Regression Model Regression Resultssupporting

confidence: 55%

Can a Crop Rotation and Fallow System Reduce the Carbon Emission Intensity of Agriculture?

Zhang,

Sun,

Xia

et al. 2024

Land

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Under the carbon emission pattern of “peak carbon and carbon neutrality”, the policy of crop rotation and fallow system (CRFS) is regarded as an important initiative to promote the green, low-carbon, and high-quality development of agriculture. Focusing on balanced panel data from 30 provinces in China from 2010 to 2021, this paper empirically examines the impact of CRFS on agricultural carbon emissions (ACEI) and its internal mechanism using a multi-temporal difference-in-differences model. The benchmark regression results show that CRFS can significantly reduce ACEI, and the results remain robust after validation by multiple methods. Mechanism results show that CRFS is able to reduce ACEI by reducing factor mismatch and promoting the level of agricultural services. Heterogeneity analysis results show that the arable land fallow rotation system is more conducive to promoting the reduction in agricultural carbon emission intensity in the main grain producing areas, main grain marketing areas, high land transfer areas, and plantation areas than in the grain production and marketing balanced areas, low land transfer, and animal husbandry areas. This study demonstrates the effectiveness of the CRFS policy implementation, provides a doctrinal basis for expanding the scope of CRFS implementation, and provides policy recommendations for relevant departments to improve the CRFS policy.

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Section: Base Regression Model Regression Resultssupporting

confidence: 55%

Can a Crop Rotation and Fallow System Reduce the Carbon Emission Intensity of Agriculture?

Zhang,

Sun,

Xia

et al. 2024

Land

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show abstract

“…Together with lower whole-farm stocking rates (Bell and Moore 2012), this has resulted in many pastures becoming a fallow dominated by weedy volunteer species with poor nutritional value and suboptimal break-crop benefits for cereal production (Lawes et al 2022). Modelling, focused on the MFZ of Western Australia, indicates that fallows are unlikely to increase overall grain productivity, with the exception of very low rainfall, weedy or diseased paddocks (Chen et al 2023).…”

Section: Livestock and Pastures In The Mixed Farming Zonementioning

confidence: 99%

Livestock preference and feeding value as key determinants for forage improvement – why not ask the consumers?

Norman

Masters

2023

Anim. Prod. Sci.

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This review presents a new model for a multidisciplinary approach to development of modern forage cultivars to enable high-value meat and wool production in the mixed farming zones of Australia. Many pasture improvement activities focus on biomass production, filling novel agro-ecological niches, fixing nitrogen and phenotypic markers. Key traits that drive profitability of livestock, such as feeding value (FV), and nutritive value (NV), are rarely considered in a timely manner. Farmers are often not seriously engaged until late in the development pipeline. Of the nearly 10 000 publications that reference forage improvement or breeding and Australia, less than 5% also reference ruminant production factors such as FV, metabolisable energy, digestibility, methane or toxicity in the abstract, title or keywords. We make the case that the late engagement of livestock science and farmers results in early discarding of potentially valuable genetic material. This in turn may contribute to market and nutritional limitations that contribute to the high failure rate of new pasture cultivars. Four case studies demonstrated the within and among species variation in FV and NV. The first showed the variability in dry matter digestibility and crude protein of 20 species of herbaceous perennials at different stages of maturity. A second study with annual legumes, grasses and brassicas indicated highly significant differences in the rate of decline of NV over time and across species. The third case study focused on commercial and experimental accessions of lucerne and demonstrated highly significant differences among accessions in NV, with a doubling of livestock growth expected with the lowest and highest NV accessions. These case studies demonstrated the potential risks associated with evaluation of FV and NV after most of the germplasm has been excluded. The final case study described a different model that was used in the identification and commercialisation of a woody perennial species. This process incorporated a multidisciplinary team, farmers and livestock-relevant characteristics from the start. In 9 years, Anameka™ oldman saltbush was selected for higher palatability, 20% higher organic-matter digestibility and eight times more biomass than the average of the original genetic material.

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Alternative cereal crop rotations in a no‐tillage dryland under Mediterranean conditions

Nascimento,

Villegas,

Álvaro‐Fuentes

et al. 2024

Agronomy Journal

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Cereal crops are frequently rotated with broadleaf crops to achieve the benefits associated with crop diversification. However, broadleaf crops often fail in Mediterranean drylands due to their lower adaptation to drought. Alternative cereal crops such as triticale (×Triticosecale Wittmack) and oat (Avena sativa L.) can help diversify drylands in the Ebro valley, dominated by barley (Hordeum vulgare L.) and wheat (Triticum aestivum L.) cultivation. A 6‐year field experiment was conducted with five crop sequences under no‐tillage: triticale–wheat–barley (TWB), oat–wheat–barley (OWB), fallow–wheat–barley, monocrop wheat, and monocrop barley. Wheat and barley grain yield, N use efficiency, and water use efficiency responses were evaluated, and economic analyses of the whole sequences were performed. Oat increased subsequent wheat yields by 15% and barley yields by 12% (p < 0.001) compared to monocropping. Similar water and N availability at sowing suggest additional synergies in an OWB rotation (possibly pest reduction), contributing to the yield increase of both crops. However, this rotation was less profitable than a TWB rotation (p = 0.002) due to the limited adaptation of oat to Mediterranean settings. Long fallowing lacked consistent benefits in water and N availability for subsequent crops. This practice protects farmers from economic losses in low‐yielding seasons, but there is an associated opportunity cost in favorable years. The introduction of alternative cereal crops has demonstrated benefits for wheat and barley production, although greater understanding of the synergistic mechanisms involved is essential to ascertain whether resource efficiency is maintained beyond the studied timeframe.

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Integrating long fallow into wheat-based cropping systems in Western Australia: Spatial pattern of yield and economic responses

Cited by 9 publications

References 56 publications

Can a Crop Rotation and Fallow System Reduce the Carbon Emission Intensity of Agriculture?

Can a Crop Rotation and Fallow System Reduce the Carbon Emission Intensity of Agriculture?

Livestock preference and feeding value as key determinants for forage improvement – why not ask the consumers?

Alternative cereal crop rotations in a no‐tillage dryland under Mediterranean conditions

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