Fertilizers, Then and Now

Williams, Kathryn R.

doi:10.1021/ed8000683

Cited by 2 publications

(2 citation statements)

References 31 publications

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“…Food, feed, fibre and fuel obtained from plants are greatly affected by three factors: climate, soil fertility, and irrigation. Although the control over the climate is difficult, the deficiency of the soil nutrients can be remedied, to a great extent by rational selection of fertiliser types and doses and appropriate method of application …”

Section: Introductionmentioning

confidence: 99%

Enhanced efficiency fertilisers: a review of formulation and nutrient release patterns

Timilsena

Adhikari

Casey

et al. 2014

J. Sci. Food Agric.

345

206

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Fertilisers are one of the most important elements of modern agriculture. The application of fertilisers in agricultural practices has markedly increased the production of food, feed, fuel, fibre and other plant products. However, a significant portion of nutrients applied in the field is not taken up by plants and is lost through leaching, volatilisation, nitrification, or other means. Such a loss increases the cost of fertiliser and severely pollutes the environment. To alleviate these problems, enhanced efficiency fertilisers (EEFs) are produced and used in the form of controlled release fertilisers and nitrification/urease inhibitors. The application of biopolymers for coating in EEFs, tailoring the release pattern of nutrients to closely match the growth requirement of plants and development of realistic models to predict the release pattern of common nutrients have been the foci of fertiliser research. In this context, this paper intends to review relevant aspects of new developments in fertiliser production and use, agronomic, economic and environmental drives for enhanced efficiency fertilisers and their formulation process and the nutrient release behaviour. Application of biopolymers and complex coacervation technique for nutrient encapsulation is also explored as a promising technology to produce EEFs.

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Section: Introductionmentioning

confidence: 99%

Enhanced efficiency fertilisers: a review of formulation and nutrient release patterns

Timilsena

Adhikari

Casey

et al. 2014

J. Sci. Food Agric.

345

206

View full text Add to dashboard Cite

show abstract

“…It was a direct accusation of antitrust violation made to the Kalisyndikat. These words also reveal the high level of involvement of public opinion in the potash debate of that time , that was also part of the educational programs of universities and agricultural schools (Bradshaws, 1907;de Turk, 1919;Gallup, 1905;Shreve, 1927;Williams, 2010)…”

Section: The Potash Crisis During World War Imentioning

confidence: 96%

Historical and technical developments of potassium resources

Ciceri

Manning

Allanore

2015

Science of The Total Environment

129

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The mining of soluble potassium salts (potash) is essential for manufacturing fertilizers required to ensure continuous production of crops and hence global food security. As of 2014, potash is mined predominantly in the northern hemisphere, where large deposits occur. Production tonnage and prices do not take into account the needs of the farmers of the poorest countries. Consequently, soils of some regions of the southern hemisphere are currently being depleted of potassium due to the expansion and intensification of agriculture coupled with the lack of affordable potash. Moving away from mined salts towards locally available resources of potassium, such as K-bearing silicates, could be one option to improve this situation. Overall, the global potash production system and its sustainability warrant discussion. In this contribution we examine the history of potash production, and discuss the different sources and technologies used throughout the centuries. In particular, we highlight the political and economic conditions that favored the development of one specific technology over another. We identified a pattern of needs driving innovation. We show that as needs evolved throughout history, alternatives to soluble salts have been used to obtain K-fertilizers. Those alternatives may meet the incoming needs of our century, providing the regulatory and advisory practices that prevailed in the 20 th century are revised.

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Fertilizers, Then and Now

Cited by 2 publications

References 31 publications

Enhanced efficiency fertilisers: a review of formulation and nutrient release patterns

Enhanced efficiency fertilisers: a review of formulation and nutrient release patterns

Historical and technical developments of potassium resources

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