Phosphorus requirements for the changing diets of China, India and Japan

Webeck, Elizabeth; Matsubae, Kazuyo; Nagasaka, Tetsuya

doi:10.1007/s10018-014-0088-8

Cited by 10 publications

(5 citation statements)

References 24 publications

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“…As can be seen in Table 1, Comoros required 0.28 kg per capita of virtual phosphorus in 1991 for meat production and 0.53 kg in 2013. These two amounts are far below the Japanese virtual phosphorus requirements for meat production (2.50 kg) [26]. The reason for the large difference is linked with not only the phosphorus consumption itself, but also with all the other criteria used during the calculation of virtual phosphorus in both studies.…”

Section: Comparison Of the Virtual Phosphorus In Comoros And Japanmentioning

confidence: 80%

“…Here, virtual phosphorus, as the term implies, refers to simply the amount of mineral phosphorus fertilizer used in other countries to produce the commodities (food and livestock) that are imported into Comoros. The idea is taken from the similar terms 'virtual water' [23] and 'virtual nitrogen' [24], and has been used by many scientists [25][26][27]. We calculated the virtual phosphorus based only on imported commodities.…”

Section: Virtual Phosphorus Flows From Imported Commodities In Comorosmentioning

confidence: 99%

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Phosphorus Demand for Food Security: A Case Study of a Food-Deficient Country

Kamal

Huang

et al. 2019

Sustainability

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The modern global food production system relies heavily on a considerable input of phosphorus. Sustainable food and agriculture need integrated phosphorus management, especially in phosphorus-scarce and food-deficient countries. This study aimed to investigate the phosphorus requirements to meet the future food demand for a phosphorus-scarce and food-deficient country, Comoros, as a case study. With its rapid population growth, domestic food production is far from meeting the food demand in Comoros, and the country relies on imported foods to satisfy the national needs; it is currently a net food importer, an import-dependent nation. We first calculated the virtual and embedded phosphorus flows through food trade in Comoros, from 1991 to 2013, and then estimated the phosphorus requirements for the future food demand under two scenarios. We found that the total virtual and embedded phosphorus through imported food increased from 163,313 to 493,190.97 kg and 53,190.12 to 143,009.62 kg in 1991 and 2013, respectively. Whereas, the embedded phosphorus through exported food shifted from 2548.75 to 1334.5 kg in 1991 and 2013, respectively. In addition, the Self-Sufficiency Ratio (SSR) analysis found that Comoros’s SSR is far below 100%; it varied from 46.27% in 1991 to 29.70% in 2013, indicating that the capacity of domestic production to cover domestic consumption fell by 16.57% during that period. In terms of phosphorus requirements, Comoros will require approximately 3,003,435.09 kg of phosphorus to reach 90% of the SSR or 3,337,150.10 kg to achieve 100% of the SSR, by 2030. These amounts could allow farmers to domestically produce the entire volume of food crops and livestock products that would otherwise be imported from trade.

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Section: Comparison Of the Virtual Phosphorus In Comoros And Japanmentioning

confidence: 80%

Section: Virtual Phosphorus Flows From Imported Commodities In Comorosmentioning

confidence: 99%

Phosphorus Demand for Food Security: A Case Study of a Food-Deficient Country

Kamal

Huang

et al. 2019

Sustainability

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“…Another study indicated that in China and India per-capita consumption of food will continue to grow because of rapid growth of economy and rapid urbanization. Further, the study made a projection that by 2050 food require for India will be double to the China (Webeck, Matsubae, & Nagasaka [12]), which shows that there is better opportunity for the Indian farmers with respect to pricing decisions.…”

Section: Relationship Between Uncontrollable Variables and Price Detementioning

confidence: 99%

A Subjective Consideration of Agricultural Future Productivity: The Study by a Proposed Model

Sahoo¹,

Sahoo²,

Satpathy³

2017

AJEBA

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“…Given the enormous increases projected in the phosphorus requirements for accommodating the changing diets of these nations over time (Webeck 2014b), it is foreseeable that the prudent use of all phosphorus resources will soon become a matter of national security. Aside from reducing geopolitical risks, and contributing to more efficient resource use, the removal of phosphorus from surface-treatment sludge would serve to improve the surface-treatment process, which is primarily required in the commodities of the automobile industry and other machinery-related industries, by means of reducing waste-treatment costs.…”

Section: Bottlenecks and Benefits Of P Recovery From Surface-treatmenmentioning

confidence: 99%

Hidden phosphorus flows related with non-agriculture industrial activities: A focus on steelmaking and metal surface treatment

Matsubae

Webeck

Nansai

et al. 2015

Resources, Conservation and Recycling

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Due to the impact of increasing global demand for high-grade steel for a variety of applications at a time when high grade iron ore reserves are becoming depleted, the removal of impurities, and especially phosphorus, has become essential. Demand in the rapidly growing car industry, in particular, is increasing pressure on steelmakers to provide high quality steel. The dephosphorization step presents new opportunities to steelmakers: besides producing high-quality steels not prone to cracking or corrosion, and improving production efficiency, steelmakers are presented with the opportunity to recover phosphorus and market it as a value-added product. Another industry with potential to recover P as a secondary product is the surface treatment industry. Surface treatment and the galvanization of metal products requires phosphoric acid and generates waste containing phosphorus, which is typically not well recovered or recycled. In this study, we focus on the potential of steelmaking slag and waste sludge from nickel plating and metal surface treatment processes as non-traditional phosphorus resources. An MFA on the hidden phosphorus flow behind global iron ore trade showed that, that the hidden flow of phosphorus from the three major iron ore export countries to China alone was 331 kt in 2013, which is equivalent to 1.7% of the global consumption of P in fertilizers consumed that year. In 2013, 3.6 kilo ton of phosphorus was wasted in acid waste from the metal surface treatment industry.

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Phosphorus requirements for the changing diets of China, India and Japan

Cited by 10 publications

References 24 publications

Phosphorus Demand for Food Security: A Case Study of a Food-Deficient Country

Phosphorus Demand for Food Security: A Case Study of a Food-Deficient Country

A Subjective Consideration of Agricultural Future Productivity: The Study by a Proposed Model

Hidden phosphorus flows related with non-agriculture industrial activities: A focus on steelmaking and metal surface treatment

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