N source

Total N-rate

N-treatment

Plant height

Plant dry biomass

N concentration

N uptake

kg∙ha⁻¹

cm

g∙plant⁻¹

---- g∙kg⁻¹ ----

mg N plant⁻¹

None

0

none

35.3bc^z

5.3c

36.4ab

194cde

Urea

45

Urea-45

37.2b

7.5a

36.2bc

270a

Urea

90

Urea-90

35.3bc

6.1bc

40.7a

249ab

Urea

135

Urea-135

44.4a

7.4a

36.3abc

269a

Urea

180

Urea-180

37.5b

5.7bc

39.8ab

229c

PPB

45

PPB-45

33.8bc

6.5ab

32.0cd

208cd

PPB

90

PPB-90

33.8c

6.0bc

28.9de

164ef

PPB

135

PPB-135

31.2c

5.9bc

27.8de

155f

PPB

180

PPB-180

32.5c

6.4abc

25.7e

163f

P-value

0.0021

0.0839

<0.0001

<0.0001