Table 3 Effect of GA₃ and melatonin on head yield of two artichoke cultivars during the two growing seasons of 2017/2018 and 2018/2019

5.7 a

1614 a

20.6 a

4130 a

4.8 b

1245 b

18.7 b

3460 b

5.2ab

1424 b

19.6ab

3800 b

5.7 a

1561 a

20.7 a

3999 a

5.0 b

1304 c

18.8 b

3587 c

  IS

Melatonin

5.7 a

1620 b

20.2 b

4091 b

GA₃

6.2 a

1735 a

21.9 a

4385 a

Control

5.3 a

1486 c

19.8bc

3914 c

  R

Melatonin

4.6 a

1228 d

18.9 c

3508 d

GA₃

5.2 a

1387 c

19.5bc

3612 d

Control

4.7 a

1221 d

17.7 d

3260 e

6.5 a

1729 a

20.0 a

4058 a

5.0 b

1284 b

18.8 b

3527 b

5.8 a

1532 a

19.8 a

3828 a

6.1 a

1601 a

20.3 a

3970 a

5.4 b

1387 b

18.2 b

3580 b

  IS

Melatonin

6.8 a

1790 a

20.6 a

4033 b

GA₃

6.9 a

1800 a

21.1 a

4258 a

Control

5.9 b

1597 b

18.3 a

3883 b

  R

Melatonin

4.8 d

1274 d

18.9 a

3623 c

GA₃

5.3 c

1401 c

19.5 a

3682 c

Control

4.8 d

1177 d

18.1 a

3276 d