Majority of the world natural rubber (Hevea brasiliensis
Muel. Arg) is traditionally and economically grown in the low
land humid tropics. This is principally due to its requirement
for uniform rainfall distribution, reduced temperature fluctua-
tion and relative humidity all year round (Von Uexckull &
Mutert, 1995; Rao et al., 1998). Soils of the eco-region are
known to be predominantly of low activity clay minerals char-
acterized by poor mineral nutrient fixation and/or storage ca-
pacity (Fagbani & Fapohund, 1986). Although this inherent
fertility constraint posses a lot of management problem upon
the conversion of the native forest into agriculture use (Von
Uexckull & Mutert, 1995); the soils are known for their sus-
tenance of the natural luxuriant tropical rainforest vegetation
(Novrdwijik, 2002). A number of low external input cropping
systems are traditionally used in the management of the soils
when put to agricultural use. Such management method in-
cludes diversification of crop component of the system through
inter cropping.
Majority of the world natural rubber (Hevea brasiliensis Muel. Arg) is traditionally and economically grown in the low land humid tropics. This is principally due to its requirement for uniform rainfall distribution, reduced temperature fluctua- tion and relative humidity all year round (Von Uexckull & Mutert, 1995; Rao et al., 1998). Soils of the eco-region are known to be predominantly of low activity clay minerals char- acterized by poor mineral nutrient fixation and/or storage ca- pacity (Fagbani & Fapohund, 1986). Although this inherent fertility constraint posses a lot of management problem upon the conversion of the native forest into agriculture use (Von Uexckull & Mutert, 1995); the soils are known for their sus- tenance of the natural luxuriant tropical rainforest vegetation (Novrdwijik, 2002). A number of low external input cropping systems are traditionally used in the management of the soils when put to agricultural use. Such management method in- cludes diversification of crop component of the system through inter cropping.
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