Many farmers rely on urea as a vital source of nitrates to feed and grow their canola and cereal crops.

Source: https://www.dailyadvertiser.com.au/story/8307538/wagga-fields-turn-to-gold-as-canola-crops-start-to-bloom/?src=rss

The plaintiffs said the diversion brought water polluted with nitrates and phosphorus into Mississippi waters, decimating oyster beds and bringing toxic algae blooms that forced public health officials to close area beaches.

Source: https://www.insurancejournal.com/news/southeast/2023/03/29/714355.htm

Treated sewage does not contain harmful bacteria but it is still full of nitrates and phosphates that plankton feed on, he added.

Source: https://timesofmalta.com/articles/view/why-malta-see-many-fried-egg-jellyfish-year.1059753

We’ll try to have no preservatives and no nitrates.

Source: https://www.postandcourier.com/aikenstandard/news/local/straight-outta-brooklyn-will-bring-new-york-bagels-to-aiken/article_7e9be97c-a0b3-11ed-b286-f7bca1bf7df4.html