Abstract
This study was conducted to generate information required to guide plantation management in relation to replanting on soils derived from different parent materials. Six oil palm estates in coastal lowlands of southwest Cameroon were considered. Oil palm yield data (in t⋅ha−1 of fresh fruit bunch, FFB) and corresponding age of palms (in years after planting, YAP) were obtained for the various estates. In all the estates, average yields were ⋅FFB⋅ha−1 and highly variable. Plantation age, solely, explained between 20% - 58% of the variation in yield. The highest average yields (11.5 t⋅FFB⋅ha−1) were obtained in plantations aged between 9 and 18 YAP and the lowest (4.66 t⋅FFB⋅ha−1) were obtained in old plantations (>23 YAP). Plantations located on volcanic parent materials generally had higher yields compared to those established on sedimentary parent materials. In order to intensify production and increase yields while conserving the environment, one important measure to consider is the replacement of aged palms, and the recommended optimal replanting age in coastal plains of southwest Cameroon should be at most 23 YAP. Estimated mean yields, if aged palms are replanted on time, can increase by 43% - 65%. Additionally, site-specific nutrient management options should be considered in plantation intensification programs.
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Claims 8
Claim · model-written summary
Plantation age alone explained 20% to 58% of the variation in oil palm yield.
Not reportedDirection
Verbatim
t0“Sustainable Oil Palm Plantation Management”
e1“Plantation age, solely, explained between 20% - 58% of the variation in yield”
Claim · model-written summary
The highest average oil palm yields were obtained in plantations aged 9 to 18 years after planting.
Verbatim
t0“Sustainable Oil Palm Plantation Management”
e2“The highest average yields (11.5 t⋅FFB⋅ha−1) were obtained in plantations aged between 9 and 18 YAP”
Claim · model-written summary
The lowest average oil palm yields were obtained in old plantations older than 23 years after planting.
Verbatim
t0“Sustainable Oil Palm Plantation Management”
e2“The highest average yields (11.5 t⋅FFB⋅ha−1) were obtained in plantations aged between 9 and 18 YAP”
e3“the lowest (4.66 t⋅FFB⋅ha−1) were obtained in old plantations (>23 YAP)”
Claim · model-written summary
Average oil palm yields were highly variable across the estates.
Verbatim
t0“Sustainable Oil Palm Plantation Management”
e4“In all the estates, average yields were ⋅FFB⋅ha−1 and highly variable”
Claim · model-written summary
Oil palm plantations on volcanic parent materials had higher yields than those on sedimentary parent materials.
Verbatim
t0“Sustainable Oil Palm Plantation Management”
e5“Plantations located on volcanic parent materials generally had higher yields compared to those established on sedimentary parent materials”
Claim · model-written summary
Oil palms should be replanted at most 23 years after planting in coastal plains of southwest Cameroon.
Verbatim
t0“Sustainable Oil Palm Plantation Management”
e6“the recommended optimal replanting age in coastal plains of southwest Cameroon should be at most 23 YAP”
Claim · model-written summary
Replanting aged oil palms on time could increase mean yields by 43% to 65%.
- Taxon
- Oil Palmt0
- Treatment
- aged palms are replanted on timee7
- Outcome
- mean yieldse7
- Direction
- increasee7
- Value
- 43% - 65%e7
Not reportedComparator
Verbatim
t0“Sustainable Oil Palm Plantation Management”
e7“Estimated mean yields, if aged palms are replanted on time, can increase by 43% - 65%”
Claim · model-written summary
Site-specific nutrient management options should be considered in oil palm plantation intensification.
Verbatim
t0“Sustainable Oil Palm Plantation Management”
e1“site-specific nutrient management options should be considered in plantation intensification programs”