Table 2. Percentage of pollen-producing grafts (seed orchard age 9–11) and pollen production per year (seed orchard age 12–20) in the different treatments.
  Percent grafts with pollen (%) Pollen production (kg ha–1 yr–1)  
Code Target height (m) Stems ha–1 9 10 11 12 13 14 15 16 17 18 19 20 Average ± StdErr
A 2 4000 28 0 79 15.7 16.1 10.1 28.3 52.8 12.5 24.8 19.5 44.2 24.9 ± 1.6
C 2 2000 26 0 88 11.8 19.3 11.3 49.0 52.4 28.9 23.7 27.8 38.2 29.2 ± 1.7
B 2 1600 29 0 72 20.0 37.5 22.8 27.4 63.9 27.1 60.8 42.1 58.7 40.0 ± 1.9
D 2 1333 35 0 85 12.2 16.6 17.0 39.5 43.4 33.6 39.6 26.7 20.4 27.7 ± 1.3
F 2 889 22 0 83 12.9 12.4 13.0 35.1 45.7 49.1 37.4 50.4 57.2 34.8 ± 2.0
E 3 800 24 0 69 10.8 21.4 26.9 34.5 88.3 91.3 73.4 69.2 69.9 54.0 ± 3.4
G 3 667 11 0 73 9.1 23.1 16.5 25.5 54.1 66.3 49.3 51.9 42.5 37.6 ± 2.2
H 4 667 33 0 77 15.9 30.8 28.5 38.3 66.8 58.2 39.8 53.1 71.8 44.8 ± 2.1
I 3 533 13 0 71 10.4 21.7 17.7 26.9 44.6 68.6 40.9 51.7 44.9 36.4 ± 2.1
K 5 533 11 0 53 3.5 12.3 4.0 29.6 65.6 57.4 41.7 46.6 62.3 35.9 ± 2.7
L 6 533 19 0 70 10.7 29.7 23.5 46.4 81.0 91.6 32.4 62.9 73.8 50.3 ± 3.1
M 4 267 45 0 74 9.0 20.1 14.5 19.2 65.6 55.3 32.7 46.9 39.1 33.6 ± 2.2
N 5 267 11 0 63 1.4 8.2 9.1 21.3 59.4 68.5 49.5 55.2 74.6 38.6 ± 3.2
O 6 267 32 0 78 6.4 18.7 12.3 32.1 55.3 64.4 51.8 53.9 55.5 38.9 ± 2.4
  Average ± StdErr   24 0 74 10.7 ± 0.3 20.6 ± 0.6 16.2 ± 0.5 32.4 ± 0.6 59.9 ± 0.9 55.2 ± 1.7 42.7 ± 1.0 47.0 ± 1.0 53.8 ± 1.2 37.6