g B(OH)₃ plant⁻¹

Region

0

15

30

45

1

23.7^*

68.5^**

73.6^**

90.2^**

2

12.8^*

21.7^**

25.7^**

28.0^**

3

11.5 ns

16.9^**

19.8^**

20.8^**

4

10.8 ns

14.1^**

17.5^**

18.6^**

5

9.8 ns

12.6 ns

15.1 ns

15.8 ns

6

9.2 ns

11.3 ns

12.6 ns

13 ns

7

8.6 ns

9.6 ns

10.3 ns

11.3 ns