Editing Populus (section)

===Energy===
Interest exists in using poplar as an [[energy crop]] for [[biomass]], in [[energy forestry]] systems, particularly in light of its high energy-in to energy-out ratio, large carbon mitigation potential, and fast growth.
[[File:Rotor poplar and willow cuttings planter, planting a new nursery of poplar for biomass with short rotation..JPG|thumb|Rotor poplar and willow cuttings planter, planting a new nursery of poplar for biomass with short rotation]]

In the United Kingdom, poplar (as with fellow energy crop willow) is typically grown in a [[short rotation coppice]] system for two to five years (with single or multiple stems), then harvested and burned - the yield of some varieties can be as high as 12 oven-dry tonnes per hectare every year.<ref>{{cite journal |title=Yield and spatial supply of bioenergy poplar and willow short-rotation coppice in the UK |journal=New Phytologist |volume=178 |issue=2 fvhc |pages=358–370 |year=2008 |doi=10.1111/j.1469-8137.2008.02396.x |author=Aylott, Matthew J. |pmid=18331429 |last2=Casella |first2=E |last3=Tubby |first3=I |last4=Street |first4=NR |last5=Smith |first5=P |last6=Taylor |first6=G |s2cid=35494995|doi-access=free |bibcode=2008NewPh.178..358A }}</ref>
In warmer regions like Italy this crop can produce up to 13.8, 16.4 oven-dry tonnes of biomass per hectare every year for biannual and triennial cutting cycles also showing a positive energy balance and a high [[Efficient energy use|energy efficiency]].<ref>{{cite journal |last1=Nassi |last2=Di Nasso |first2=N. |last3=Guidi |first3=W. |last4=Ragaglini |first4=G. |last5=Tozzini |first5=C. |last6=Bonari |first6=E. |year=2010 |title=Biomass production and energy balance of a twelve-year-old short-rotation coppice poplar stand under different cutting cycles |doi=10.1111/j.1757-1707.2010.01043.x |journal=Global Change Biology Bioenergy |volume=2 |issue=2 |pages=89–97 |s2cid=86414864}}</ref>