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Fig. 3 | Chemical and Biological Technologies in Agriculture

Fig. 3

From: Application of biochar-coated urea controlled loss of fertilizer nitrogen and increased nitrogen use efficiency

Fig. 3

Cumulative loss of nitrogen and production of NH4+-N, and NO3-N in different fertilized soils due to leaching during experiment for 65 days. a NH4+–N, b NO3-N, c total N. CK, no fertilizer; U1,urea at 100% N rate; U2, urea at 80% N rate; U1 + B, biochar combined with urea at 100% N rate; U2 + B, biochar combined with urea at 80% N rate; BCU1, biochar-coated urea at 100% N rate; BCU2, biochar-coated urea at 80% N rate; BCU1 + B, biochar combined with biochar-coated urea at 100% N rate. Error bars represent ± sd (n = 3)

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