Bwa-yo - Société Audubon Haiti

Lisina... Delen 127
Table 15.3 Site and growth parameters of L. leucocephala subsp. glabrata trials in Haiti.
SITE ELEVAnON ANNUAL AGE SURVIVAL HEIGHT DBH 2 DRY WOOD
(m) RAINFALL (yr) (%) M.A.!.I M.A.!. YIELD
(mm) (m) (em) (kg tree· I )
Colora 247 1471 0.5 93 2.3
Colin 2 775 1300 0.8 100 1:4
Passe Catabois 2 120 987 0.8 83 1.5
Ganthier 90 700 1.8 90 1.2
Cazeau 4 30 1200 2.0 90 3.1
Passe Catabois 1 120 987 2.2 78 1.8
Colin 1 775 1300 2.2 41 2.2
Grand Bassin 70 1300 2.3 95 1.0
Jean-Rabel 107 1045 2.9 98 1.0
Marmont 280 1450 3.0 96 1.9
Terrier Rouge 20 1293 3.0 86 1.0
Mare Grand Bois 40 1200 3.3 59 1.7
Fond-des-Blanes 250 1335 4.0 100 1:4
Papaye 250 1450 4:4 44 1:4
Nan Marron 450 600 4.8 68 1.3
Cabaret 1 80 900 6.9 77 0.8
Cabaret 2 80 900 6.9 81 0.9
1.8 6.4
0.8 2:4
2.0 17:4
0.9 3.2
2.0 3 9.1
1:4 9.2
1.1 17.0
1:4 16:4
0.8 15.8
0.9 19.9
IM.A.I. = Mean annual increment. 2 DBH = Stem diameter at 1.3 m above ground level, in em. 3 Stem diameter at 0.1 m
above ground level, in em.
HEIGHT(m)
8r------------;=====::::;-----;;'I
] 1 MlYR LINE I
7
TREE AGE (yr)
Figure 15.9 Height growth ofL. leucocephala
subsp. glabrata in Haiti.
shade-tolerant neem (Azadirachta
indica) had improved stem form and
exhibited less taper of the stump log
when planted in a 2: 1 ratio with subspecies
glabrata (Welle et aI., 1985).
Giant leucaena is the principal
species selected in Haiti for alley
cropping systems, being easy to
establish and.productive on a wide
range of sites. In an alley cropping
trial at Barbe Pagnol in the
Northwest, L. leucocephala subsp.
glabrata was compared with· an incountry
source of L. diversifolia
subsp. diversifolia and 20 provenances
of Gliricidia sepium for biomass
production. The trial was harvested
at intervals of 4-6 months
over a 28 month period and exhibited
total yields as shown in Figure
15.10. The Leucaena species did not
differ significantly in total dry biomass
or leaf and small wood yields,