1. PRESENTATION SLIDES
Measurements taken from pine and eucalyptus plantation demonstration sites in the Southern Highlands, Tanzania
All material is open access and no further permissions required.
Forestry Development Trust should be cited as the source.

2. Effect of different weeding regimes on pine and eucalyptus
Kisolanza Farm, Iringa Region, Tanzania (altitude 1725m ASL)
Planted 2.5 x 2.5m, January 2014
Measurements taken August 2016

3. Effect of different weeding regimes on pine, Kisolanza, Tanzania
P. tecunumanii
P. tecunumanii
P. maximinoi
P. maximinoi
P. maximinoi
Survival 80%
96%
88%
88%
88%

4. Height 1.7 m DBH 1.7 cm after 31 months Survival 80%
Effect of different weeding regimes on pine, Kisolanza, Tanzania
PIT ONLY, NO WEEDING
Height 1.7 m DBH 1.7 cm after 31 months
Survival 80%

5. RING WEEDING (50cm diameter) Height 2.1m DBH 3.1cm after 31 months
Effect of different weeding regimes on pine, Kisolanza, Tanzania
RING WEEDING (50cm diameter)
Height 2.1m DBH 3.1cm after 31 months
Survival 96%

6. Height 2.0m DBH 3.6cm after 31 months Survival 88%
Effect of different weeding regimes on pine, Kisolanza, Tanzania
SLASH & RING WEEDING
Height 2.0m DBH 3.6cm after 31 months
Survival 88%

7. Height 4.6m DBH 5.4cm after 31 months Survival 88%
Effect of different weeding regimes on pine, Kisolanza, Tanzania
COMPLETE WEED CONTROL
Height 4.6m DBH 5.4cm after 31 months
Survival 88%

8. COMPLETE WEED CONTROL & FERTILISER
Effect of different weeding regimes on pine, Kisolanza, Tanzania
COMPLETE WEED CONTROL & FERTILISER
Height 4.9m DBH 5.8cm after 31 months
Survival 88%

9. Effect of different weeding regimes on E. grandis, Kisolanza, Tanzania
Survival 4%
41%
83%
87%
94%

10. Height 5.5m DBH 5.1cm after 31 months Survival 4%
Effect of different weeding regimes on Eucalyptus grandis, Kisolanza, Tanzania
PIT ONLY, NO WEEDING
Height 5.5m DBH 5.1cm after 31 months
Survival 4%

11. Height 13.2m DBH 11.4cm after 31 months Survival 94%
Effect of different weeding regimes on Eucalyptus grandis, Kisolanza, Tanzania
COMPLETE WEED CONTROL
Height 13.2m DBH 11.4cm after 31 months
Survival 94%

12. Effect of fertiliser treatment on Eucalyptus grandis early growth under optimal establishment and management
Kisolanza Farm, Iringa Region, Tanzania (altitude 1725m ASL)
Planted January 2014
Measurements taken May 2015 and August 2016

13. Positive correlation between fertiliser levels and growth most obvious during first year (and especially for 2.5x2.5m and 3x3m).

14. Eucalyptus grandis and hybrid clone survival and tree form under optimal plantation establishment and maintenance
Kisolanza Farm, Iringa Region, Tanzania (altitude 1725m ASL)
Planted January 2014
Measurements taken May 2015 and August 2016

15. E. grandis, GC12, GC15, GU07 and GU08 with >80% normal tree form
E. grandis, GC12, GC15, GU07 and GU08 with >80% normal tree form. Clonal hybrids with lowest proportion of dead trees.

16. GC582 and GC584, with relatively poor form (targeting pulp & paper or wood energy markets) yet high stocking volume.

17. Effect of different spacing regimes on Eucalyptus grandis under optimal establishment and management
Kisolanza Farm, Iringa Region, Tanzania (altitude 1725m ASL)
Planted January 2014
Measurements taken May 2015 and August 2016

18. 77% normal tree form overall, with 12% poor form (mostly heavy lateral branch, forked, crooked and recessive) and 11% dead.

19. Considerable growth between year 1 and 2, with tree volume responding to spacing.

20. MAI 26-35 m3/ha after 31 months. Total volume per ha highest in closer spacing.

21. Potential productivity of Eucalyptus grandis under optimal management
Eucalyptus grandis planted 3x3 m in January 2014 following mechanical land preparation, intensive management with complete weed control, pruned and thinned September 2016.
Average measurements after 31 months: Height 12.6 m, DBH 11.4 cm, Volume m3

22. Notes:
Every tree within demonstration area was measured for diameter and height (i.e. not Permanent Sample Plots)
A form factor of 0.5 for Eucalyptus was used in tree volume calculations.
In future, FDT will establish our own form factor for both eucalyptus and pines based on sectional analysis of trees felled/removed.  Site index for Kisolanza will also be calculated.

23. Measurements taken September 2016
Effect of different planting material and weeding practices on Eucalyptus grandis growth
Maheve
Planted January 2014
Measurements taken September 2016

24. Land clearance, no weeding Land clearance, full weeding
Average E. grandis tree volume (m3), Maheve
Land clearance, no weeding
Land clearance, full weeding
% increase
Unimproved seed (Tanzania)
0.008
0.010 25
Improved seed (Zimbabwe)
0.013
0.0175 35 63 75
119
Overall gain of 119% from using improved planting material and weeding. Use of improved planting material most important factor.