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Boolean: (bicycle AND helmet) OR (head AND protection) (always group AND in parenthesis)
Title: title:(climate change)
Author: author:("bohr niels" OR "bohr n") (avoid only full first name)
Phrase: "water pump control" (does not work with wildcards)
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title:(The AND potential AND environmental AND benefits AND and AND risks AND derived AND from AND legumes AND in AND rotations)

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10 items by relevance
1 Book chapter

The potential environmental benefits and risks derived from legumes in rotations

Peoples, Mark B.; Hauggaard-Nielsen, Henrik; Jensen, Erik S.

Nitrogen Fixation in Crop Production — 2009, pp. 349-385

Year: 2009

Language: English

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2 Preprint article

The potential environmental benefits and risks derived from legumes in rotations

Emerich, David W.; Krishnan, Hari B.; Peoples, Mark B.; Hauggaard-Nielsen, Henrik; Jensen, Erik Steen

progressively replaced legume rotations and organic sources of N fertility with synthetic N fertilizers over the past 3-4 decades, so that US agriculture now derives almost half of its total N supply from fertilizers, and two-thirds of all N in China’s food originates from the Haber-Bosch synthesis of ammonia

Year: 2009

Language: English

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