62. AUN SOVANN
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Factors of productivity
Important to identify and classify the
factors of productivity
Factors :
Biological
Environmental
Management
Surrounding social atmosphere.
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TECHNIQUE OF HARVEST
Biological factor
Clones
Planting density
Trunk growth
position of cut
Nutrition
Environmental
Rainfall
Humidity
Soil
Cloud cover
Management
Tapping system
(Stimulation?)
Skill & quality of tapping
Collection ,supervision
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Tapping system
Control of technical tapping quality
Disease control.
TECHNIQUE OF HARVEST
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Tapping system
What is the tapping system ?
Method of tapping
Direction of tapping
Length of the cut
Tapping frequency
Panel management
Stimulation intensity
Which is the tapping system to get the yield
potential ?.
TECHNIQUE OF HARVEST
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Tapping system
Yield is depending on
tapping system :
It depend on:
Clone
History and age of the trees
Socio-environmental habits .
TECHNIQUE OF HARVEST
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Strategy of producers short or long term
Choosing clone adapted
to short or long term
exploitation
PB 235 intensive exploitation for a
quick feed-back (money return)
PR 107 moderate exploitation to
sustain of the productive period.
0
0.5
1
1.5
2
2.5
3
0 10 20 30 40
Age
PB 235
PR 107
RUBBER CLONE
70. AUN SOVANN
Strategy of producers
Land or labor profitability
• Make a choice : land or
labor profitability
Tapping system to choice :
- Optimizing the Kg/ha by
increasing the tapping frequency
- Optimizing the kg/tap/day with a
lower tapping frequency with
hormonal stimulation
0
50
100
150
200
250
300
Kg/ha Kg/tap/day
d/2 d/4 d6
70
71. 1
2
4
6
3
5
0
0,20 m
0,40 m
0,60 m
0,80 m
1,00 m
1,20 m
1,40 m
1,60 m
1,80 m
2,00 m
2,20 m
2,40 m
1
2
3
4
5
6
0
0,20 m
0,40 m
0,60 m
0,80 m
1,00 m
1,20 m
1,40 m
1,60 m
1,80 m
2,00 m
2,20 m
2,40 m
After 6 years of tapping, P2 > P1
- Annual rest of regeneration areas due to
panel switch : improved sugar supply
1 2
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72. AUN SOVANN
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1
2
3
4
5
6
7
8
9
10
0
0,20 m
0,40 m
0,60 m
0,80 m
1,00 m
1,20 m
1,40 m
1,60 m
1,80 m
2,00 m
2,20 m
2,40 m
From seventh year of tapping onwards, P1 > P2
(improved sugar supply)
After 10 years of tapping, P1 P2 (cumulate).
Panel switch can be recommended only when money
return on investment must be accelerated
(ex:Newplantation,creditandloaninterests…)
1
2
4
6
8
10
3
5
7
9
0
0,20 m
0,40 m
0,60 m
0,80 m
1,00 m
1,20 m
1,40 m
1,60 m
1,80 m
2,00 m
2,20 m
2,40 m
1 2
Panel Management
Strategy of producers
Quick & Stable profitability
73. Treatments
A B C D
No Ann. panel Triennial Biann panel
Panel chang after panel chang after
changing year 2 changing year 3
Year 1 to 3 9,3 9,1 9,3 9,1
Year 1 to 6 22,2 cd 25,0 a 23,0 bc 24,2 ab
PB217
Year 1 to 9 44,4 a 45,0 a 42,4 b 42,8 ab
Year 1 to 3 12,9 b 13.9 a 12.5 b 13.5ab
Year 1 to 6 25.4 b 34.0 a 31.3 ab 32.9 a
PB260
Year 1 to 9 52.8 a 53,0 a 45.2 b 54.1 a
Year 1 to 3 9,7 b 10.6 a 10.0 ab 10.5 ab
Year 1 to 6 23.4 b 28.7 a 29.4 a 29.8 a
GT1
Year 1 to 9 49.1 a 41.9 b 42.6 ab 44.3 ab
Cumulated yield (kg/t)
AUN SOVANN
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75. AUN SOVANN 75
Tapping system
SUMMARY :
Direction of tapping:
Length of the cut :
Tapping frequency :
Panel management
Stimulation intensity
S/2 , S/2+ S/4U
d3 7d/7
Downdwards and or upwards
ET 1,5-5% Pala 1,5-2(2) 0-8/y
Both
76. rcnasm<½næRKb;RKgb¼T Structure of Tech. Management
General
Director
Factory
Technical
Office
Plantations
Villages
Division /
2-3Groups
Group / 15
tappers
Technical
Manager
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77. rcnasm<½næRKb;RKgb¼T Structure of Tech. Management
AUN SOVANN
General Director
Factory Technical Office Plantations
Villages
Divisions / 2-3Groups
Group / 15 tappers
Technical Manager
77
78. Régulation, optimization of yield
Over and under-harvest
tapping, stimulation : frequency, doses
Adaptation of the tapping systeme to the social an
economical context
over and under-harvest : need of tool for diagnosis
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80. AUN SOVANN 80
Physiological parameters of DL
Under harvesting
Harvesting
normal
Over Harvesting
Phosphore (status of the metabolism)
Sucrose (potentiel of the response to stimulation)
Bio-Indicators of harvesting system intensity