Essays about: "Petter Walan"
Found 1 essay containing the words Petter Walan.
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1. Modeling of Peak Phosphorus : A Study of Bottlenecks and Implications for Future Production
University essay from Globala energisystemAbstract : Today's modern agriculture is totally dependent on phosphorus to sustain their large yields. Several studies have recently expressed a concern for a future phosphorus deficiency. These studies are based on data for estimated reserves which have been increased with more than a fourfold since 2010. READ MORE
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