id	keyword
brj-22273	biochar
brj-22273	soil
brj-22273	hydrochar
brj-22273	pyrochar
brj-22273	mycorrhizal
brj-22273	maize
brj-22273	colonization
brj-22273	accumulation
brj-22273	uptake
brj-22273	doi
brj-22273	et al
brj-22273	nutrient
brj-22273	article