Manure biochars were rich in soil available nutrients than standard wood biochar.

NO₃⁻ and SO₄²⁻ availability were higher in manure biochar than in standard biochar.

Low temperature manure biochars significantly increased both N₂O and CO₂ emissions.

Both N₂O, CO₂ emissions were positively correlated with biochar VM and N contents.

Manure biochars were less effective in C sequestration compared to standard biochar.