Browsing by Author "Marfo-Ahenkora, E."

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    Effect of water stress on the yield performance of seven dura x pisifera oil palm progenies
    (Journal of Ghana Science Association, 2008-06) Dwarko, D.A.; Nuertey, B.N.; Baidoo-Addo, K.; Asamoah, T.E.O; Marfo-Ahenkora, E.; Okyere-Boateng, G.; Opoku, A.
    Seven Dura x Pisifera (DxP) oil palm progenies were evaluated for yield in three climatic locations with different mean annual water deficit (150 mm, 250 mm a'nd 400 mm) values in order to deter­ mine their tolerance to water stress. The design used was a randomized complete block in 4 replica­ tions with a plot size of 0.48 ha (42 palms). Data was collected on number of bunches and bunch weight (kg) and fresh fruit bunch (FFB) yield (Tonnes/ha) was subsequently calculated. The data was analyzed-using Analysis of Variance (ANOVA) and means separated by Duncan's Multiple Range Test (DMRT). Significant progeny effects at each location on the yield parameters were ob­ served and, based on these results, three stress tolerant progenies were identified. The identification and selection of drought tolerant progenies for planting in marginal areas and the use of drought sensitive ones in optimum and favourable area in Ghana will lead to efficient utilization of available soil moisture and improvement in overall yields.
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    Intensification strategy: determination of the income optimum time to under-plant oil palm with cocoa
    (, Journal of ghana science.association,, 2006-12) Nuertey, B.N.; Amoah, F.; Opoku, A.; Asamoah, T; Oppong, F.K.; Bonsu, K.; Marfo-Ahenkora, E.
    Cocoa was inter-cropped with oil palm of three different palm ages to determine the best time to under plant cocoa in oil palm. The experiment was conducted from 1994 to 2004 at the Oil Palm Research Institute, Kusi. Oil palm at three different ages;2, 4 ami 6 years after planting were un­ -der-planted wit" mixed cocoa hybrids. These were compared with sole oitpalmand sole cocoa. The treatments were arranged in a randomized complete block design. and. replicated three times. ". Growth and yield of oi! palm under-cropped with cocoa after 4 years comparedfavorably with sole oil palm. The income equivalent ratio defined as the land area under sole oil palm that TS required to produce the incomes achieved in lnter-cropping, were 1.08,1.25, 1.02, I, 0.31 for 2 years oil palm with cocoa, 4 years oil palm with cocoa, 6 years oil palm witli cocoa, sole oil palni a!Jll sole cocoa respectively. Results of this study suggest that maximum returns from the land is achieved when 4years old oil palm is under-planted with COCOa followed by 2 years and 6 years old oil palm respectively. Such lllte~cropping gave higher returns from the. land than either sole oil palm or cocoa plots.