Optimizing wheat production and reducing environmental impacts through scientist–farmer engagement: Lessons from the North China Plain

Jiang, Wei; Zhu, Annah; Wang, Chong; Zhang, Fusuo; Jiao, Xiaoqiang

doi:10.1002/fes3.255

Cited by 15 publications

(7 citation statements)

References 46 publications

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“…Drought is a severe source of abiotic stress that threatens wheat ( Triticum aestivum L. ) growth and yield worldwide and is exacerbated by climate change ( Wang et al, 2016 ; Zhang et al, 2017 ; Alam et al, 2020 ). Northern China, a major global wheat-producing region, is frequently afflicted with drought during wheat growth, particularly when precipitation is relatively low and evapotranspiration is high in the spring ( Deng et al, 2018 ; Jiang et al, 2020 ; Li et al, 2020 ). This leads to significant adverse effects on anthesis and grain filling ( Li et al, 2000 ; Liu et al, 2014 ; Asif et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Effect of Foliar Application of Various Nitrogen Forms on Starch Accumulation and Grain Filling of Wheat (Triticum aestivum L.) Under Drought Stress

Ding

Long

et al. 2021

Front. Plant Sci.

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Foliar nitrogen (N) fertilizer application at later stages of wheat (Triticum aestivum L.) growth is an effective method of attenuating drought stress and improving grain filling. The influences or modes of action of foliar application of various nitrogen forms on wheat growth and grain filling need further research. The objective of this study was to examine the regulatory effects of various forms of foliar nitrogen [NO3–, NH4+, and CO(NH2)2] on wheat grain filling under drought stress and to elucidate their underlying mechanisms. The relative effects of each nitrogen source differed in promoting grain filling. Foliar NH4+-N application notably prolonged the grain filling period. In contrast, foliar application of CO(NH2)2 and NO3–-N accelerated the grain filling rate and regulated levels of abscisic acid (ABA), z-riboside (ZR), and ethylene (ETH) in wheat grains. Analysis of gene expression revealed that CO(NH2)2 and NO3–-N upregulated the genes involved in the sucrose–starch conversion pathway, promoting the remobilization of carbohydrates and starch synthesis in the grains. Besides, activities of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) were increased, whereas the content of malondialdehyde (MDA) declined under foliar nitrogen application (especially NH4+-N). Under drought stress, enhancement of carbohydrate remobilization and sink strength became key factors in grain filling, and the relative differences in the effects of three N forms became more evident. In conclusion, NH4+-N application improved the antioxidant enzyme system and delayed photoassimilate transportation. On the other hand, foliar applications of NO3–-N and CO(NH2)2 enhanced sink capacity and alleviated drought stress injury in wheat.

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Section: Introductionmentioning

confidence: 99%

Effect of Foliar Application of Various Nitrogen Forms on Starch Accumulation and Grain Filling of Wheat (Triticum aestivum L.) Under Drought Stress

Ding

Long

et al. 2021

Front. Plant Sci.

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“…Therefore, improving the income of smallholders is important to enhance the overall supply chain sustainability. In this research, for the whole wheat supply chain, smallholders' creativity was shown to be further stimulated, suggesting an increase in the demand for technology improvements to achieve a more sustainable supply chain ( Jiang et al, 2020 ). Multidisciplinary and systematic knowledge linking environmental costs and economic benefits will be needed to improve the overall supply chain sustainability.…”

Section: Discussionmentioning

confidence: 79%

“…In this way, the STB farmers not only received information and comprehended the process requirements, but also understood why the process was necessary ( Huang et al, 2015 ). Farmers can use the adaptive technologies in their own field plots and also transfer technologies to neighbors ( Jiang et al, 2020 ). With this approach, smallholders are equipped with knowledge of sustainable wheat production, and also become capable of mastering the required technological skills.…”

Section: Discussionmentioning

confidence: 99%

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Improving the sustainability of the wheat supply chain through multi-stakeholder engagement

Deng

Zhang

Wang

et al. 2021

Journal of Cleaner Production

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Feeding the world's growing population, while producing economic benefits with limited environmental effects, is a major challenge faced by global food supply chains. This is especially apparent when the production stage is predominated by smallholders as they each face varying economic and environmental demands, making it difficult to mobilize them on the ground. This study investigated how the environmental and economic sustainability of wheat supply chains could be improved by analyzing the performance of all stakeholders, especially the smallholders. Results showed that 77% of GHG emissions came from wheat cultivation, and less than 8% of the total economic benefits were recouped during this stage. In contrast, smallholders in the Science and Technology Backyards, reduced their GHG emissions by 16.4% and improved their economic benefits by 1.3- fold. Furthermore, a 2.6-fold increase in profit (1808 USD) with GHG emission reduction was achieved simultaneously by integrating all individual stages as a whole. This study found that the sustainability of the wheat supply chain was mainly affected by wheat cultivation. It also demonstrated the potential efficacy of empowering smallholders and integration of all individual stages as a whole to improve the sustainability of food supply chains.

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“…In the NCP, maize production is dominated by smallholder farmers who are deeply affected by insurance psychology and apply too much synthetic fertilizer [39]. In this study, the average N, P 2 O 5 , and K 2 O application rates by farmers were 250.0, 96.2, and 51.1 kg ha −1 , respectively, whereas the corresponding nutrient requirements for maize were 160.0, 42.6, and 99.0 kg ha −1 , respectively [40].…”

Section: Strategies For the Improvement In The Yield And Wpmentioning

confidence: 99%

Improving Yield and Water Productivity of Rainfed Summer Maize in Smallholder Farming: A Case Study in Hebei Province, China

et al. 2022

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Because of the strong competition for a limited resource of water and demand for food production, understanding yield and water productivity (WP) potentials and exploitable gaps in the current production of intensively rainfed maize (Zea mays L.) is essential on the regional scale in China. In this study, we conducted 411 site–year on-farm trials to assess the actual yield and WP of rainfed summer maize and its yield and WP potentials in Hebei Province, China. Each on-farm trial contained detailed information of three different treatments: no fertilizer application (CK), current farmers’ practices (FP, depending on local farmer field fertilization management), and optimum fertilizer application (OPT, depending on soil testing and balanced fertilization). Results revealed that the yield and WP of rainfed summer maize in Hebei Province were 7635 kg ha−1 and 20.7 kg ha−1 mm−1, respectively, and the yield and WP potentials were 12,148 kg ha−1 and 32.0 kg ha−1 mm−1, respectively. Thus, the farmers attained 62.8% of the yield potential and 64.7% of the WP potential. A wide variation was observed in terms of the yield and WP across various types of farming. Compared with high-yield and high-WP (HYHW) farming, in low-yield and low-WP (LYLW) farming, the yield decreased by 24.9% and WP decreased by 44.4%. Nitrogen fertilizer application rate and rain were the most significant factors for yield and WP gaps among farmers, respectively. Other factors, such as solar radiation (tSola), soil available phosphorus content (AP), potassium fertilizer application rate, and grass-referenced evapotranspiration from planting to maturity (ET0), contributed the most to the variations in the yield and WP. Scenario analysis indicated that the optimization of fertilization levels from current to optimal for each farming could increase the yield and WP by 9.7% and 14.8%, respectively; closing gaps between the farming groups and achievement of the standard of HYHW farming by all farmers could increase the yield and WP by 14.8% and 35.5%, respectively; and achieving the yield and WP potentials could increase the yield and WP by 59.1% and 54.8%, respectively. These findings provided farming-based evidence that optimal nutrient management, advanced and climate-adapted agronomy practices, and higher soil fertility are essential for future maize production.

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Optimizing wheat production and reducing environmental impacts through scientist–farmer engagement: Lessons from the North China Plain

Cited by 15 publications

References 46 publications

Effect of Foliar Application of Various Nitrogen Forms on Starch Accumulation and Grain Filling of Wheat (Triticum aestivum L.) Under Drought Stress

Effect of Foliar Application of Various Nitrogen Forms on Starch Accumulation and Grain Filling of Wheat (Triticum aestivum L.) Under Drought Stress

Improving the sustainability of the wheat supply chain through multi-stakeholder engagement

Improving Yield and Water Productivity of Rainfed Summer Maize in Smallholder Farming: A Case Study in Hebei Province, China

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