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Welcome back to this 6th, bonus, episode of “The Story of Nitrogen”! This episode is all about nitrogen fertilizers and how we decide what rate of fertilizer to apply to our ground. This is a question I and many others have tried to tackle in our careers, and one whose answers regularly surprise and humble us. This episode is also about another question, one which anyone can relate to regardless of whether they work in agriculture or not, one which every person will have a different answer to: “How good is good enough?” Interviewees: Emerson Nafziger, Fabian Fernandez, Paul Trcka

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Nitrate removal from water

How does water (and things like nitrate) move through bedrock?

Great video on water movement through soils

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Chloride in freshwater lakes

Integrating water management practices to remove nitrate

Wetlands, bioreactors and other ways to remove nitrate from water

Groundwater flow in southeastern Minnesota

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Nitrogen, organic matter decomposition, and corn yields

Earthworm invasion into previously earthworm-free forests

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The "I Love Lucy" chocolate factory conveyor belt

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How changes in nitrogen impact nitrogen-"burning" (nitrifying) microbes

DNRA and nitrogen cycling microbes in agricultural soils

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Nitrogen saturation symptoms in the Fernow forest

The complicated relationship between nitrogen, phosphorus, and eutrophication in lakes

Hypoxia and eutrophication in the Gulf of Mexico

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Nitrogen and phosphorus in lakes

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The complicated relationship between nitrogen, phosphorus, and eutrophication in lakes

Hypoxia and eutrophication in the Gulf of Mexico