EFCT: Environmental Footprint Comparison Tool.  A tool for understanding environmental decisions related to the forest products industry.  Non-Wood Fiber. headerlink
Effects of non-wood fiber use on energy use

The cultivation and harvesting of dedicated agricultural fiber crops requires somewhat larger amounts of fossil fuel relative to wood fiber due to its greater cultivation intensity and significantly greater reliance on fertilizers. While non-wood fiber typically requires less overall manufacturing energy, wood fiber has a significant renewable fuel advantage when chemically pulped.

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More information:

Differences in fossil fuel demand

Manufacturing energy

Role of wood-derived fuels