Total root length (cm)

Total root surface area (cm²)

1 d

3 d

5 d

7 d

1 d

3 d

5 d

7 d

90-21-3+K

109.5 ± 4.74ab

122 ± 2.49b

154.83 ± 8.17bc

187.24 ± 5.45b

108.17 ± 3.54a

133.03 ± 5.93b

172.17 ± 10.7b

235.23 ± 5.54b

90-21-3-K

112.35 ± 2.81a

128 ± 3.77b

149 ± 2.92c

177.89 ± 7.62c

107.93 ± 4.16a

129.96 ± 6.52b

166.88 ± 9.34b

218.86 ± 4.04c

D937+K

96.22 ± 2.3b

144 ± 3.31a

191 ± 6.86a

219.39 ± 4.93a

104.03 ± 3.75a

159.72 ± 2.97a

211.59 ± 9.07a

274.1 ± 8.15a

D937-K

103.04 ± 1.87b

141.07 ± 3.62a

170.89 ± 3.71b

177.25 ± 10.79c

104.83 ± 4.38a

146.31 ± 3.94b

187.79 ± 6.23b

226.89 ± 16.79bc

Average root diameter (mm)

Total root volume (cm³)

1 d

3 d

5 d

7 d

1 d

3 d

5 d

7 d

90-21-3+K

0.37 ± 0.02a

0.37 ± 0b

0.44 ± 0.01a

0.48 ± 0.02a

1.72 ± 0.09a

2.39 ± 0.03bc

3.02 ± 0.12b

4.88 ± 0.18ab

90-21-3-K

0.36 ± 0.02a

0.32 ± 0.02b

0.35 ± 0.01c

0.36 ± 0.01b

1.65 ± 0.12a

2.09 ± 0.08c

3.01 ± 0.1c

4.19 ± 0.04c

D937+K

0.36 ± 0.01a

0.4 ± 0.01a

0.39 ± 0.01b

0.47 ± 0.02a

1.89 ± 0.13a

2.88 ± 0.02a

3.97 ± 0.1a

5.33 ± 0.13a

D937-K

0.39 ± 0.02a

0.38 ± 0.01ab

0.41 ± 0.02ab

0.45 ± 0.02a

1.81 ± 0.17a

2.58 ± 0.04ab

3.41 ± 0.08b

4.7 ± 0.2b