Your SlideShare is downloading. ×
0
The Bundaberg path to high         early yields(A challenge to traditional thinking)              Chris Searle       Sunco...
Objective• Reach a sustainable yield 4.5 t NIS /ha  (36% SKR = 1.6t of kernel) by year nineWhy ?• High early yields are th...
6                   5                   4Yield (NIS) t/ha                   3                                             ...
6                   5                   4Yield (NIS) t/ha                   3                                             ...
MethodMaximise light interception• Double canopy volume every year• High fertliser (N) inputsMaximise potential productivi...
Maximise light interception by maximising                  growthHigh Nitrogen program (poor soils)• Year 1 100g N /tree /...
One year old        tree - 1.3 m        high1.4 m
Four year       old tree3.2m   3.2m high
Six year old       tree –       4.4m high4.4m
Maximise potential productivity• Low graft union (minimise wind damage)• Repeat mechanical pruning (every time tree  grows...
18 month old              tree              Pruned three              times since1.5m              being planted       35cm
2011        Original cut                      2012                                                2010         2013       ...
3.5 year old       tree       Shaping3.6m       starting to       take place
Not all varieties the same• Minimum pruning (A203, A4, 344)• Moderate pruning (842, 816)• Heavy pruning ( A268, 741)Prunin...
Change in the profitability equationCost 8 x mechanical prunings @10c a tree/time = 80c1,000 g N /tree = $2.50Total = $3.3...
Challenge - maintain yield 4.5 t NIS(1.6 t/ha kernel) in mature orchardsMaximise light distribution (key)• mechanical hedg...
Upcoming SlideShare
Loading in...5
×

On farm innovations that increase production innovative young macadamia tree production systems used in bundaberg - chris searle

1,336

Published on

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
1,336
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
6
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Transcript of "On farm innovations that increase production innovative young macadamia tree production systems used in bundaberg - chris searle"

  1. 1. The Bundaberg path to high early yields(A challenge to traditional thinking) Chris Searle Suncoast Gold Macadamias
  2. 2. Objective• Reach a sustainable yield 4.5 t NIS /ha (36% SKR = 1.6t of kernel) by year nineWhy ?• High early yields are the key to making macadamia profitable in the short to medium term (Precocity)
  3. 3. 6 5 4Yield (NIS) t/ha 3 Traditional Predicted 2 1 0 2 3 4 5 6 7 8 9 10 11 12 13 Year Fig1. Traditional yield curve and predicted yield curve from high input system
  4. 4. 6 5 4Yield (NIS) t/ha 3 Traditional Predicted 2 1 0 2 3 4 5 6 7 8 9 10 11 12 13 Year Fig 2. Traditional yield and predicted yield curves plus actual data from 7 businesses (210,000 trees 8x4 spacing )
  5. 5. MethodMaximise light interception• Double canopy volume every year• High fertliser (N) inputsMaximise potential productivity• Divert energy into crop not growth• Repeat mechanical pruning (every time tree grows 50cm cut off 20cm) - internal complexity• Low graft and low skirts
  6. 6. Maximise light interception by maximising growthHigh Nitrogen program (poor soils)• Year 1 100g N /tree /year (32kg/ha)• Year 2 200g N /tree /year (63 kg/ha)• Year 3 300g N /tree /year (94 kg/ha)• Year 4 400g N /tree /year (125kg/ha)• Minimum - apply monthly, 12 months of year• Ensure all micronutrient deficiencies are corrected – no impediments to growth
  7. 7. One year old tree - 1.3 m high1.4 m
  8. 8. Four year old tree3.2m 3.2m high
  9. 9. Six year old tree – 4.4m high4.4m
  10. 10. Maximise potential productivity• Low graft union (minimise wind damage)• Repeat mechanical pruning (every time tree grows 50cm cut off 20cm)• Create multiple sites for flower development at cut points (internal complexity)• Maximise productivity by maintaining low skirts (don’t cut off 2 year old wood)Divert energy into yield not growth
  11. 11. 18 month old tree Pruned three times since1.5m being planted 35cm
  12. 12. 2011 Original cut 2012 2010 2013 flowering 2012 flowering Old racemes 2011 floweringWeight dragging down branch opening canopyPruning promotes flowering at cut points. Often one year oldwood will flower. Weight at end of branch drags it downopening canopy
  13. 13. 3.5 year old tree Shaping3.6m starting to take place
  14. 14. Not all varieties the same• Minimum pruning (A203, A4, 344)• Moderate pruning (842, 816)• Heavy pruning ( A268, 741)Pruning also• reduces wind damage• reduces leaning trees (mechanisation)
  15. 15. Change in the profitability equationCost 8 x mechanical prunings @10c a tree/time = 80c1,000 g N /tree = $2.50Total = $3.30 = 1 kg NISHigh early yields• Reduce debt – earlier breakeven• Macadamia a viable investment (IRR 6%)• Allows you to set up for mature orchard phase
  16. 16. Challenge - maintain yield 4.5 t NIS(1.6 t/ha kernel) in mature orchardsMaximise light distribution (key)• mechanical hedging and limb removal?• maintain production of fruiting woodMaintain tree and soil health over long term• Soil health - continue organic matter program• Minimise soil lossFuture - need varieties that have 20% higher yield -breed the ‘wildness’ out of macadamia
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×