Skip to main content
Chemical and Biological Technologies in Agriculture

Table 5 Concentration of nitrogen in oilseed rape, amount of oilseed rape nitrogen uptake, nitrogen utilization efficiency of fertilized nitrogen, and biomass of oilseed rape under different fertilized treatments

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

Treatment

Nitrogen in oilseed rape concentration (mg/kg)

Amount of oilseed rape nitrogen uptake (mg/pot)

Biomass of oilseed rape (g/pot)

Nitrogen utilization efficiency of fertilized nitrogen (%)

CK

58.77 ± 2.44c

78.54 ± 23.79c

1.33 ± 0.36c

–

U1

65.03 ± 0.86bc

200.65 ± 36.91b

3.09 ± 0.57ab

30.64

U2

64.40 ± 1.54bc

176.42 ± 46.77b

2.73 ± 0.66b

30.52

U1 + B

72.07 ± 5.06a

244.33 ± 47.79ab

3.41 ± 0.80ab

41.96

U2 + B

70.97 ± 5.82ab

188.83 ± 36.19b

2.65 ± 0.34b

34.27

BCU1

72.77 ± 3.54a

283.57 ± 48.10a

3.89 ± 0.58a

51.29

BCU2

70.63 ± 1.01ab

238.56 ± 57.87ab

3.38 ± 0.86ab

50.26

BCU1 + B

71.77 ± 4.39a

280.98 ± 24.45a

3.93 ± 0.48a

50.97

  1. 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
  2. Different letters in the same column indicate a significant difference at the 5% level according to the LSD test
Back to article page