Cereals, nitrogen and population: an assessment of the global trends

Gilland, Bernard

doi:10.1016/0160-9327(93)90201-d

Cited by 12 publications

(7 citation statements)

References 3 publications

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“…21). My calculations using Gilland's equations (22) suggest that there may have to be an approximate doubling of global use of synthetic nitrogen to produce 3 billion tons of grain (2). Another vital resource for the future will be a continuing rise in the level of population, and hence farmer, education in most regions.…”

Section: Resultsmentioning

confidence: 99%

World food trends and prospects to 2025

Dyson

1999

Proc. Natl. Acad. Sci. U.S.A.

171

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This paper reviews food (especially cereal) production trends and prospects for the world and its main regions. Despite fears to the contrary, in recent years we have seen continued progress toward better methods of feeding humanity. Sub-Saharan Africa is the sole major exception. Looking to the future, this paper argues that the continuation of recent cereal yield trends should be sufficient to cope with most of the demographically driven expansion of cereal demand that will occur until the year 2025. However, because of an increasing degree of mismatch between the expansion of regional demand and the potential for supply, there will be a major expansion of world cereal (and noncereal food) trade. Other consequences for global agriculture arising from demographic growth include the need to use water much more efficiently and an even greater dependence on nitrogen fertilizers (e.g., South Asia). Farming everywhere will depend more on information-intensive agricultural management procedures. Moreover, despite continued general progress, there still will be a significant number of undernourished people in 2025. Signs of heightened harvest variability, especially in North America, are of serious concern. Thus, although future general food trends are likely to be positive, in some respects we also could be entering a more volatile world.

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Section: Resultsmentioning

confidence: 99%

World food trends and prospects to 2025

Dyson

1999

Proc. Natl. Acad. Sci. U.S.A.

171

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“…On the other way the importance of cereal crops in the world, wheat is the first and after rice, maize is a third as food and feed crops (Amanullah et al 2009). In that time from now up to 2030 may use a double quantity of chemical fertilizers to save person production at the same level (Gilland 1993). Irfan et al (2018) found that when increased phosphorus quantity (0, 30, 60, 120 and 240 mg P2O5 kg-1) so significant (p˂0.05) increased in plant phosphorus uptake and plant dry weight and in same time was Phosphorus fixation in soils is a big problem, for that, it affects negatively on phosphorus use efficiency of the plant.…”

Section: Intrоduсtiоnmentioning

confidence: 99%

Influence of Mono-ammonium and Di-ammonium Phosphate on Phosphorus Use Efficiency of Maize and Bread Wheat Plants

Yossif¹,

Gezgin²

2019

SJAFS

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“…The nitrogenase enzyme, which is capable of biologically fixing non‐reactive dinitrogen gas (which constitutes 78% of the air) into reactive N, is only produced by microscopic forms of life, that is, bacteria such as Rhizobia and Azotobacter (Robson et al, 2015) and many other cyanobacteria (Stal, 2015). It was quite understandable that around 1798 the British philosopher Thomas Malthus, when observing the rapid growth of the human population, and hence the need for proteinaceous food, predicted a dark future for mankind because in those days, all conversion of atmospheric nitrogen to a form of reactive nitrogen that could be used in the food chain, relied on biological nitrogen fixation (BNF) (Gilland, 1993). And in those times, these processes were not understood at all, and famine was constantly present in the world.…”

Section: Nitrogen As a Necessity But Also A Threatmentioning

confidence: 99%

How can we possibly resolve the planet's nitrogen dilemma?

Matassa

Boeckx

Boere³

et al. 2022

Microbial Biotechnology

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Nitrogen is the most crucial element in the production of nutritious feeds and foods. The production of reactive nitrogen by means of fossil fuel has thus far been able to guarantee the protein supply for the world population. Yet, the production and massive use of fertilizer nitrogen constitute a major threat in terms of environmental health and sustainability. It is crucial to promote consumer acceptance and awareness towards proteins produced by highly effective microorganisms, and their potential to replace proteins obtained with poor nitrogen efficiencies from plants and animals. The fact that reactive fertilizer nitrogen, produced by the Haber Bosch process, consumes a significant amount of fossil fuel worldwide is of concern. Moreover, recently, the prices of fossil fuels have increased the cost of reactive nitrogen by a factor of 3 to 5 times, while international policies are fostering the transition towards a more sustainable agro‐ecology by reducing mineral fertilizers inputs and increasing organic farming. The combination of these pressures and challenges opens opportunities to use the reactive nitrogen nutrient more carefully. Time has come to effectively recover used nitrogen from secondary resources and to upgrade it to a legal status of fertilizer. Organic nitrogen is a slow‐release fertilizer, it has a factor of 2.5 or higher economic value per unit nitrogen as fertilizer and thus adequate technologies to produce it, for instance by implementing photobiological processes, are promising. Finally, it appears wise to start the integration in our overall feed and food supply chains of the exceptional potential of biological nitrogen fixation. Nitrogen produced by the nitrogenase enzyme, either in the soil or in novel biotechnology reactor systems, deserves to have a ‘renaissance’ in the context of planetary governance in general and the increasing number of people who desire to be fed in a sustainable way in particular.

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Cereals, nitrogen and population: an assessment of the global trends

Cited by 12 publications

References 3 publications

World food trends and prospects to 2025

World food trends and prospects to 2025

Influence of Mono-ammonium and Di-ammonium Phosphate on Phosphorus Use Efficiency of Maize and Bread Wheat Plants

How can we possibly resolve the planet's nitrogen dilemma?

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