Open Access

Table 12

Change in oil palm foliage bulk.

      Foliage span (metre)

Age of palms (year) 7 8 9 10 11 12
D 1 128 9.5 4.69 4.86 5.08 5.54 5.48 5.89
D 2 143 9 4.70 4.94 5.20 5.63 5.57 5.96
D 3 160 8.5 4.77 5.05 5.25 5.71 5.72 6.14
D 4 180 8 4.92 5.16 5.37 5.79 5.87 6.05
D 6 205 7.5 4.93 5.22 5.42 5.85 5.90 6.23
Treatment Density Distance            
      % of foliage overlap

Age of palms (year) 7 8 9 10 11 12
D 1 128 9.5 0 1 6 23 21 37
D 2 143 9 3 10 21 39 37 51
D 3 160 8.5 15 28 37 54 55 68
D 4 180 8 36 46 54 68 68 75
D 6 205 7.5 50 61 68 80 81 88
Treatment Density Distance            
      % of central void

Age of palms (year) 7 8 9 10
D 1 128 9.5 12 6 2 0
D 2 143 9 4 1 0 0
D 3 160 8.5 1 0 0 0
D 4 180 8 0 0 0 0
D 6 205 7.5 0 0 0 0
Treatment Density Distance        

Foliage span = the distance (in m) from the bole to the projection on the ground of the tip of frond 33.

Percentage of foliage overlap = by projection of the foliage volume (assimilated to a sphere) on a plane.

Part of the area of a unit triangle covered by the foliage of 2 or 3 palms (trigonometric determination).

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