01686naa a2200253 a 450000100080000000500110000800800410001910000140006024501650007426000090023952008690024865300200111765300190113765300230115670000160117970000230119570000170121870000150123570000220125070000290127270000200130170000160132177300950133711297612020-07-20       2020    bl uuuu     u00u1 u    #d1 aJINDO, K.  aRole of biochar in promoting circular economy in the agriculture sector. Part 1bA review of the biochar roles in soil N, P and K cycles.h[electronic resource]  c2020  aRecently, biochar has been widely used for versatile applications in agriculture and environment sectors as an effective tool to minimise waste and to increase the efficiency of circular economy. In the present work, we review the current knowledge about biochar role in N, P and K cycles. Ammonia volatilisation and N2O emission can be reduced by biochar addition. The content of available P can be improved by biochar through enhancement of solubilisation and reduction in P fixation on soil mineral, whilst high extractable K in biochar contributes to K cycle in soil. Liming effect and high CEC are important properties of biochars improving beneficial interactions with N, P and K soil cycle processes. The effectiveness of biochar on N, P and K cycles is associated with biochar properties which are mainly affected by feedstock type and pyrolysis condition.  aMacro-nutrients  aNutrient cycle  aPyrogenic material1 aAUDETTE, Y.1 aHIGASHIKAWA, F. S.1 aSILVA, C. A.1 aAKASHI, K.1 aMASTROLONARDO, G.1 aSÁNCHEZ MONEDERO, M. A.1 aMONEDERO, M. A.1 aMONDINI, C.  tChemical and Biological Technologies in Agriculture, New Yorkgv. 7, n. 15, p. 1-12, 2020.