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en.wikipedia.org/wiki/Fertilizer

A fertilizer (American English) or fertiliser is any material of natural or synthetic origin (other .... This ammonia is used as a feedstock for all other nitrogen fertilizers, such as anhydrous ammonium ... Deposits of sodium nitrate (NaNO3) ( Chilean saltpeter) are also found in the Atacama desert in Chile and ... Liquid vs solid[edit].

yara.com/doc/33521_Nitrate_-_Pure_Nutrient.pdf

agronomic and environmental impact of nitrogen fertilizer choices. Mineral nitrogen ... index. 46,6 % lower environmental index of ammonium nitrate compared to urea* ..... The golden rule in fertilizer use remains simple: apply the right amount.

extension.oregonstate.edu/gardening/node/955

Apr 30, 2008 ... If you need only a certain element such as nitrogen and want it to be ... an inorganic fertilizer such as ammonium nitrate might be in order.

www.cropnutrition.com/fertilizers-and-soil-acidity

Mosaic Fertilizer Technology Research Centre - April 2013 Source: Fertiliser ... Nitrate-based products are the least acidifying of the nitrogen fertilizers, while ... due to use of phosphorus fertilizers is small compared to that attributed to nitrogen, ...

www.noble.org/news/publications/ag-news-and-views/2007/january/back-to-basics-the-roles-of-n-p-k-and-their-sources

Jan 3, 2007 ... I want to use this article to address commonly asked questions regarding ... Most nitrogen fertilizer sources are made from anhydrous ammonia; Safety ... Liquid composed of one-half urea and one-half ammonium nitrate; Urea ...

www.extension.umn.edu/agriculture/nutrient-management/nitrogen/fertilizer-urea

Urea, a white crystalline solid containing 46% nitrogen, is widely used in the ... Urea can be readily nitrified – that is, converted to nitrate (NO3) – even when applied ... application of urea compared to the fall plowed-down application ( Table 4).

homeguides.sfgate.com/ammoniacal-nitrogen-fertilizer-vs-urea-fertilizer-82705.html

For use as a fertilizer, granular urea is processed from ammonia. ... When used alone, ammonium nitrate contains about 34 percent nitrogen. Both the single and  ...

www.todayshomeowner.com/debate-over-organic-chemical-fertilizers

Long-term use of chemical fertilizer can change the soil pH, upset beneficial microbial ecosystems, increase pests, and even ..... The Debate over Organic vs.

www.yara.co.uk/images/Nitrates%20Brochure_tcm430-236087.pdf

nitrogen and additional fertiliser nitrogen to meet their full demand and reach ..... continued use of urea compared to nitrates increases the difference in efficacy ...