land clearing on oil palm plantation sudirman yahya hariyadi
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LAND CLEARING ON OIL PALM PLANTATION
Sudirman YahyaHariyadi
LAND CLEARING
• MINERAL SOIL (ULTISOL), • SWAMPY AREA• PEAT SOIL
ULTISOL (MINERAL soil) LAND CLEARING
Depending on :
• VEGETATION, • TOPOGRAPHY,• METHOD
VEGETATION :1. PRIMARY FOREST : virgin environment, tree stem diameter > 1 m, high plant density 1. SECONDARY FOREST : previously managed/cultivated/logged, smaller tree diameter < 50 cm., middle plant
density3. BUSHES : after shifting cultivation, small tress diameter < 20 cm, low plant density 4. Wild grasses, Imperata sp : after shifting cultivation, Wild grasses5. CONVERTION AREA : from other agricultural activities, such as plantation (coconut, rubber etc) or upland
food crops
BUSHESFOREST IMPERATA CONVERTION
slashing
Cutting
slashing Slashing / spraying
Cutting
Chopping
Plowing Hump digging
Piling / stacking
harrowingPiling
Cleaning
“slashing” : Cutting the trees/small bushes, diam. < 10 cm
Felling : Cutting the trees with chainsaw or axe for stem diam. > 10 cm
Cutting height above soil surface
Ø < 10 - 20 cm at 40 cm high
Ø 21 – 30 cm at 60 cm high
Ø 31 – 75 cm at 100 cm high
Ø > 75 cm at 150 cm high
Chopping : Chopping : Cutting the fallen trunk and chopping the stem, branches and twigs.
PilingPiling : To pile/ to collect the cut branches and twigs: To pile/ to collect the cut branches and twigs. . Direction of piling, north – south, 50 – 100 m apart. Direction of piling, north – south, 50 – 100 m apart.
TOPOGRAPHY
Risk ?
- soil compaction- Top soil losses
<< 15 % : using heavy duty (BULLDOZER)
>> 15 % : CHAINSAW
0 – 3 % : Flat 16 – 25 % : rolling
4 – 8 % : slightly undulating 26 – 45 % : steep
9 – 15 % : undulating >> 45 % : very steep
LAND CLEARING METHOD
ZERO BURNING- Forest Area - Bushes
1. Manual
2. Mechanical
3. Chemical
- Imperata Area
Manual
Mechanical
Mechanical
Chemical
LAND CLEARING
Manual • diameter of tree or stem < 10 cm , cut with short
sword or axe; >10 cm cut with chain-saw Mechanical Zero Burning Method : stacking-piling and pulling out
and pushing the trunk mechanically, using heavy equipments (bulldozer and excavator).
The weakness of using heavy equipment: Top soil is pealed due to the work of pushing on piling the
stems ; and soil compaction.
CHEMICALS
Use of herbicide:* systemic (Glyphosate group); herbicide is
absorbed and translocated to target part (roots)* contact (Paraquat group); not
translocated
Check the weather before and after spraying; the weather affects the effectiveness of herbicide application
Must be on right kinds, right concentration, right dosage, right time and right procedure or method of application.
Time of land clearing works
Dry season - fire burning easily,- limiting of time, need
accurate planning
Rainy season -Lower work productivity-Difficult on operating heavy equipment
Avoiding of smoking and careless disposing of cigarette butts
LAND CLEARING PLANTING PLANPLANTING PLAN
Too Long/lateToo Long/late
Bush/Imperata Bush/Imperata grassesgrasses
- planting LCC planting LCC (Legume Cover Crop) (Legume Cover Crop) CM CM ((Calopogonium mucunoidesCalopogonium mucunoides))
CP CP ((Centrosema pubescentCentrosema pubescent))
PJ ( PJ (Pueraria javanicaPueraria javanica))- contour terraces - contour terraces (slope > 15 %) (slope > 15 %)
-Risks :Risks :Level of erosion increaseLevel of erosion increaseSoil compactionSoil compactionSurface run-off increaseSurface run-off increase
LAND CLEARING ON SWAMPY AREA
Need Attention on:
1. Depth of the swamp
2. Vegetation
Drainage waterway
Land drained out, quickly drained
No Drainage
NO LAND CLEARING / NO PLANTINGRISKS :
- Waterlogged palms
- Rotten fruits
- Stunted growth
THE STEPS ON LAND CLEARING OF SWAMPY AREA
1. Road Construction
2. Forest Cutting and Felling
3. Drainage Waterway (dw) Construction
Kinds of dw Upper width (m)
Lower width (m)
Depth (m)
Primary 3.0 – 6.0 1.2 – 1.8 1.8 – 2.5
Secondary 1.8 – 2.5 0.6 – 0.9 1.2 – 1.8
Tertiary 1.0 – 1.2 0.5 – 0.6 0.9 – 1.0
LAND CLEARING AT PEAT SOIL (HISTOSOL)
Important consideration
• Depth of peat • Maturity of peat• Characteristics of peat
PEAT SOIL
Meaning Histosol : SOIL which a majority composed by organic
material, C – organic > 25% or has a layer of organic material > 40 cm
KIND OF PEAT SOIL
• Topogen : influenced by topography
• Ombrogen influenced by rain intensity, flood or waterlogged
LAND CLEARING ON PEAT SOIL
Classification according to the DEPTH of peat• Shallow : < 1 m • Medium : 1 – 3 m • Deep : 3 – 8 m• Very deep peat : > 8 m
MATURITY of peat:1. Fibric : immature, coarse fibre, visuallly original matter2. Hemic: half mature, start to decompose3. Sapric : Mature, has been decomposted
Characteristic of peat• Physical character- Soil Color is dark brown, depend on maturity level- High of water content and water holding capacity (15 – 30 x
dry weight)- High of soil porousity- Low of bulk density- Bad drainage, - Easy drying- Irreversible shrinkage- Hydrophobic and subsidence
Characteristic of peat
• Chemical character- Acid (pH < 3.5)- Low fertility - High N- total, but not available for plant, - High C/N ratio- High on Mg , - Low P and K- Low micronutrient especially Cu, B, Zn
- High water buffering capacity
STEPS OF LAND CLEARING ON PEAT SOIL
1. Build boundary channel surrounding area2. Forest clearing 3. Build Drainage4. Constructing roads and bridges5. Compacting of the soil along planting rows
STEP OF LAND CLEARING ON PEAT SOIL
1. BUILD A BOUNDARY CHANNEL- As a boundary channel for the area which will be reclaimed- build 1 year before cutting the tree- Size :upper width 4 m, under width 3 m, depth 2 – 3 m- function : as main channel and ground water table regulator
STEPS OF LAND CLEARING ON PEAT SOIL
2. Forest clearing- cutting and slashing the small trees and bushes < 2.5 cm)⊖- cutting with chainsaw- high of cutting from soil surface
⊖ < 15 cm : 15 cm ⊖ < 15 – 30 cm : 30 cm ⊖ < 30 – 75 cm : 60 cm ⊖ < 75 – 150 cm : 90 cm ⊖ >150 cm : 150 cm
- stacking - Chopping and piling of branchs and twigs
STEP OF LAND CLEARING ON PEAT SOIL
3. Build a drainage
Water way type Upper wide (m)
Under wide (m)
Depth
(m)
Primary (main) 3.0 – 6.0 1.2 – 1.8 1.8 – 2.5
Secondary 1.8 – 2.5 0.6 – 0.9 1.2 – 1.8
Tertiary 1.0 – 1.2 0.5 – 0.6 0.9 – 1.0
On peat soil, Water management system is very important to manage water table height
PRIMARY DRAIN
1. Function: to flow the water directly to final drain area (river or channel)
2. Build over flow and water gate on flooding area
SESECCONDONDAARRYY DRAIN DRAIN
1. To flow to primary drain
2. Function: to catch the water from tertiary drains
3. As a block boundary
4. Distance between two adjacent secondary drains 400 – 500 m apart
TERTIARY CHANNEL
1. To flow water to secondary drain
2. Function: to catch the water from palm area
3. The distance between two of tertiary drains depend on drainage condition of the field, minimum one drain for every 2 palm rows, similar to the path at the upland palm.
4. CONSTRUCTING THE ROAD
1. Road foundation taken from diggings of soil (mineral), soil is compacted with excavator
2. Compaction of the road using wood in diameter 7 – 10 cm, and then piled up with mineral soil as thick as 20 – 30 cm
3. Alternative: build a mini rail train for fruit transport
If constructing road is impossible, inputs and fruits are transported trough water ways by boat
5. COMPACTION OF PLANTING ROWS
1.Required for strong root anchorage, to prevent leaning growth of the palm
2.Compacting mechanically
LAND PREPARATION
1. BLOCKING2. STAKING AND PLANTING SPACE3. DIGGING PLANTING HOLE4. ESTABLISHING COVER CROP (LCC)
BLOCK
1. Block is an unit area of palm that supervised by a supervisor
2. Area of 25 – 30 ha3. Each block is bordered by block roads.4. Block numbering generally starts from East
to West
STAKINGObjectives : - determine planting spots, straight planting
rows - determine planting density or number of palm/ha- determine palm productivity
Planting space :
9.2 m x 9.2 m x 9.2 m 136 palms/ha
(equal-side triangular) field terminology : five eyes
DIGGING PLANTING HOLE
Size 60 cm x 60 cm x 60 cm or 60 cm x 60 cm x 40 cm
means : size at the base 60 cm x 60 cm or 40 cm x 40 cm size at the surface 60 cm x 60 cm Depth 60 cm
Using pattern made from bamboo or wood lath
Digging procedure :
Upper part of the soil (top soil) is separated from the lower part (subsoil), example; top soil is placed at the left side, and sub soil at the right side of the hole.
LCC ESTABLISHMENTBenefits of LCC• Improve soil structure, loose • Increase organic matter and soil nutrient, mainly N• Prevent erosion• Supress the growth of weeds, especially alang-alang
grass, Imperata cylindrica• Reduce the infestation of certain pathogenic fungi
Dosage of LCC : 12 – 20 kg / ha
CM/CC : CP : PJ = 2 : 1 : 2 or 2 : 3 : 2
The Species of LCC
CM : Calopogonium mucunoides CC : Calopogonium cerelium
CP : Centrocema pubescent PJ : Pueraria javanica
WORKER REQUIREMENT FOR LAND CLEARING OF FOREST
Activities Primary Forest Secondary Forest
Slashing 23 – 27 14 – 17
Tree cutting and felling 28 – 32 18 – 32
cutting and chopping 18 – 22 9 – 16
Collecting and Stacking 20 – 25 11– 15
MANUAL SYSTEM (md / ha)
Mechanical SystemActivities Unit Primary
ForestSecundary
Forest
Slashing md/ha 23 – 27 14 – 17
Trees cutting and felling oh/ha 10 – 14 8 – 14
Branches cutting and chopping md/ha 18 – 22 9 – 16
Collecting and Stacking I oh/ha 7 – 9 4 – 6
Collecting and Stacking II oh/ha 7 – 9 4 – 6
Activities md/ha
Slashing 7 – 9 Trees cutting and felling 10 – 20Branches cutting, chopping, and collecting
18 – 22
Activities unit Slashing md/ha 7 – 9 Trees cutting and felling oh/ha 5 – 7 Branches cutting and chopping md/ha 7 – 9 Collecting and Stacking I oh/ha 4 – 6 Collecting and Stacking II oh/ha 4 – 6
WORKER REQUIREMENT FOR LAND CLEARING OF BUSHES
MANUAL SYSTEM (md / ha)
Mechanical System
Activities md/ha dosage (l/ha)
Consentra-tion (%)
Spray Volume (Ltr)
Spraying I 5 – 6 4 – 5 0.5 400 – 500
Spraying II 3 – 4 1 – 2 0.5 300 – 400
Spot Spraying 1 – 2 1 – 1.5 0.5 200 – 300
WORKER REQUIREMENT FOR LAND CLEARING OF Imperata cylindrica (wild grass)
Plant age (month)
Rotation md/ha Dosage
(l/ha)
Consentra-tion (%)
Spray Volume (Ltr)
1 1
2
8
6
0.40.3
0.5
0.5
80
60
2 1
2
4
2
0.20.1
0.5
0.5
40
20
3 1
2
2
1
0.050.05
0.5
0.5
10
10
4 1
2
1
1
0.05
0.05
0.5
0.5
10
10
5 1
2
1
1
0.03
0.03
0.5
0.5
6
6
6 1
2
0.5
0.5
0.02
0.02
0.5
0.5
4
4
7 1 0.3 0.01 0.5 2
WORKER REQUIREMENT FOR WIPING OF Imperata cylindrica (wild grass)
LAND PREPARATION
COLLECTION ROAD
COLLECTION ROAD
BLOCK DESIGNMAIN ROAD
PRODUCTION ROAD
PRODUCTION ROAD
1000 M
300 M
300 M
1000 M
SECONDARY DRAIN
SECONDARY DRAIN
BLOCK DESIGN ON SWAMP AREAMAIN DRAIN (MAIN CHANNEL)
SECONDARY
DRAIN
1000 M
300 M
300 M
1000 M
SECONDARY
DRAIN
Tertiery Drain
OUTLET OF DRAIN PERFORMANCE
X ѵ
LAND PREPARATION
Individual TERRACE
2 m 2 m
2 m 2 m
10 – 15o
A
E
D
CB
B
D
E
BEFORE
AFTER
Individual TERRACE
1 – 1.5 m 2.5 - 3 m
Planting Hole
E
B
D
0.3 m
ditch E
B
D
PLANTING HOLE
60 CM
60 CM
60 CM
40 CM
60 CM
60 CM
40 CM
60 CM60 CM
60 CM X 60 CM X 60 CM 60 CM X 60 CM X 40 CM
60 CM
PLANTING HOLE
60 CM X 60 CM X 60 CM
SUB SOIL
60 CM X 60 CM X 60 CM
TOP SOIL
Top soil Sub soil
Sub soilTop soil
seedling
7.96 M
7.96 M
9.2 M 9.2 M
9.2 M
9.2 M
North STAKING OF PLANTING SPACE9.2 M X 9.2 M X 9.2 M (TRIANGLE)
HOW TO DESIGN IT?
STAKING OF PLANTING SPACE9.2 M X 9.2 M X 9.2 M (TRIANGLE)
9.2 M9.2 M
9.2 M
9.2 M?
4.6 M
cb
a
PHYTAGORAS THEOREME : c2 = a2 + b2 b2 = c2 – a2
= (9.2)2 – (4.6)2
= 84.64 – 21.16 = 63.48
b = Ѵ63.48 = 7.96
G
E
D B C
AF
ABC
DFAB
COMPARATION OF THE AREA OF :
STAKING OF PLANTING SPACE
7.96 M7.96 M
4.6 M
North
ROAD
ROAD
1.99 M
2.30 M
4.6 M
4.6 M
7.96 M
TEMPORARY STAKE (1 M)
REAL STAKE (1 M)
MOTHER STAKE (2 M)
STAKING OF PLANTING SPACE
7.96 M7.96 M
4.6 M
North
ROAD
ROAD
1.99 M
2.30 M
4.6 M
4.6 M
7.96 M
STAKING OF PLANTING SPACE
7.96 M7.96 M
9.2 M 9.2 M
4.6 M
North
ROAD
ROAD
1.99 M
2.30 M
4.6 M
4.6 M
STAKING OF PLANTING SPACE
7.96 M
7.96 M
9.2 M 9.2 M
9.2 M
9.2 M
North
CALCULATING PALM POPULATIONPOPULATION = FIELD AREA / AREA OF STAKE
POPULATION / HA = ------------- 10.000 M2
►
1 HA = 10.000 M2
a
a a
10.000= -------------- ½ a x aV3
POPULATION of a x a x a (triangle space)
Example :Oil Palm plantation area 12 000 ha, planting space 9.2 m x 9.2 m x 9.2 m (triangle)Total palm population ? Field Area = 12 000 ha = 12 000 x 10 000 m2 = 120 000 000 m2 120 000 000 m2Population = ------------------------ ½ (9.2) x (9.2)V3 m2 120 000 000 = ------------------- 4.6 x 9.2 x 1.732 120 000 000 = ------------------- = 1 637 147 palms 73.29824
Or 10 000 m2Population = ------------------------ ½ (9.2) x (9.2)V3 m2 10 000 = ------------------- 4.6 x 9.2 x 1.732 10.000 = ------------------- 73.29824
= 136.4= 136 palms / ha (rounded)
Total Population of 12,000 ha = 12,000 x 136= 1,632,000 palms
NURSERY OF OIL PALM
2 STAGES :
1. PRE NURSERY ( 3 MONTHS)2. MAIN NURSERY ( 12 MONTHS)
SEED SELECTING
ABNORMAL SEED NORMAL SEED
SEED CALCULATION
Age(yr)
Productivity (ton FFB/ha/year)
Certified seed Uncertified seed
3 6.80 2.72
4 12.00 4.80
5 14.50 5.80
6 17.00 6.80
7 22.00 8.80
8 24.50 9.80
9 26.00 10.40
10 26.00 10.40
11 26.00 10.40
12 26.00 10.40
13 26.00 10.40
14 25.00 10.00
15 24.50 9.80
Age(yr)
Productivity (ton FFB/ha/year)
Certified seed Uncertified seed
16 23.50 9.40
17 22.00 8.80
18 21.00 8.40
19 20.00 8.00
20 19.00 7.60
21 18.00 7.20
22 17.00 6.80
23 16.00 6.40
24 15.00 6.00
25 14.00 5.60
Total 461.80 184.72
Average 20.1 8.0
FFB PRODUCTIVITY OF CERTIFIED VS UNCERTIFIED SEEDS
PRE NURSERY (3 MONTHS)
1. Bed preaparation, size 1.2 m (width), + 8.0 m (length)
2. Bed shading by paranet or palm leaf
3. seed selecting
4. Media and equipment preparation
5. Soil sieving for plant media
6. Media (topsoil) is filled into baby Polybag
7. Seed planting on baby polybag
8. Maintenance (watering, weeding, fertilizing, pest control)
9. Thining out of defected seedlings (+ 5 – 10 %)
PRE NURSERY (3 MONTHS)
0.5 m 0.5 m0.5 m1.2 m 1.2 m
Baby polybagBamboosand 2 cm
Top soil
Soil siever Top
soil
MAIN NURSERY (12 months)
1. Media (soil) peparation
2. Watering Installation (pipe / sprinkle / drip irrigation)
3. Media are filled into polybag (20 kg soil / polybag)
4. Seedling planting (polybag space 90 cm x 90 cm x 90 cm)
5. Maintenance (watering, weeding, mulching, fertilizing, pest management)
6. Thinning out of defected seedlings) (+ 5 – 10 %)
Criteria of good seedling
1. Healthy and vigorous seedling
2.Uniform growth
3.Free from pest and disease
4.Seedling morphology at 1 year age :
- Height > 125 cm
- Stem Diameter + 6.0 cm
- Total of + 18 leaves
GERMINATED SEED CALCULATION (per ha)
1. Seeds on pre nursery = 100 %
- damage during transportation = 4 %
- seedling dead = 4 %
- abnormal = 4 %
Seedlings: transplanted to main nursery = 88 %
2. Seedling on main nursery = 88 %
- seedling dead = 3 %
- thinning out I (abnormal) = 5 %
- thinning out II (abnormal) = 3 %
- thinning out III (abnormal) = 2 %
Seedlings: transplanted to the field = 75 %
3.Palms: dead, disease on the field = 5 %
(replanting)
Assumption
Palm population/ha = 136 palms / haReplanting 5 % = 5% x 136 palms = 6.8
(or 7 palms rounded)
GS needed :
(136 + 7) x 100 GS = 191 GS/ha
75GS = germinated seeds
MAIN NURSERY AREA = 1.0 – 1.5 % x FIELD AREA
Means :
1 ha of main nursery for 70 – 100 ha field planting area
Number of seedlings per ha depend on field planting space.
Calculation of Field planting area can be supplied by one hectare
main nursery
Main nursery
space (m)
number of
seedling / ha
Dead Seedling
(3 %)
Sub total
Thinning out (10 %)
transplant to the field (incl 10%)
Planting area
(ha)
1.0 x 1.0 x 1.0
11,500 345 11,155 1,115 10,040 66.9
0.9 x 0.9 x 0.9
14,300 429 13,871 1,387 12,484 83.2
0.85 x 0.85 x 0.85
16,000 480 15,520 1,552 13,968 93.1
0.8 x 0.8 x 0.8
18,064 542 17,522 1,752 15,770 105.1
0.75 x 0.75 x 0.75
20,552 616 19,936 1,993 17,943 119.6
ABNORMAL SEEDLING (THINNING OUT)
Twisted leaves
Grass –like leaves
Grass –like leaves
Poly embrionic
Erect
Dwarf
Chimera
Wide internode
Crown disease
Abnormal crown
Fe deficiency
Abnormal Budding shoot
Narrow internode
Rolled leaf
Etiolation
Unopened leaf
Curve growthRolled growth seedling
PlasmolysisApogonia infested
ABNORMAL IMMATURE PALM (THINNING OUT)
Rolled Leaf
Crown disease
Narrow internode
Male flowering only
Upright crown
infested By Oryctes
MATURE PALM ABNORMALITY
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