Immature oil palm responses to slow release fertilizers

Ong K.P., . and Teo L, . and A. Zainuriah, . (1994) Immature oil palm responses to slow release fertilizers. [Proceedings Paper]

Results from four nursery and three field experiments investigating the effects of commercially available slow release fertilizer SRF on oil palm are reported here.Five types of SRF evaluated in these experiments are AGROBLEN - 16:9:8:3 A1 WOODACE - 10:10:5:2 W1 WOODACE - 12:6:6:2 W2 KOKEI - 5:5:5:1 K1 and KOKEI - 14:8:6:5 K2.In the nursery trials experiments 1 and 2 evaluated the performance of SRF in the cultivation of normal 12-month-old oil palm seedings under sprinkle and drip irrigation respectively.A total of 20 treatment combinations from the five SRF were tested against the control standard inorganic manuring.In experiments 3 and 4 the performance of SRF to raise advanced planting material APM of up to 18 months old were evaluated under sprinkler and drip irrigation respectively.A total of 24 treatment combinations of SRF were tested against the control.Comparative studies with respect to vegetative growth parameters leaf nutrient analysia results and dry matter yield for the various treatments at predetermined intervals are discussed in these experiments.Overall results indicate the superiority of the control compared with combinations of SRF tested.Leaf nutrient analysis results indicate that seedlings manured with SRF were significantly lower in leaf K and N levels compared with the control.In the field trials experiment 5 and 6 were carried out on Rengam series soil Typic Paleudult testing formulations of A1 and W2 in an oil palm replant and a terraced jungle clearing respectively.Rates of W2 tested ranged from 10-30 pellets/palm while A1 was tested at 300-500g/palm.Experiment 7 was carried out on sandy colluvium testing 8 and 5 treatment combinations of W2 and K2 respectively in a flat jungle clearing.Rates of W2 and K2 tested ranged from 10-35 pellets/palm.Both visual observation and vegetative parameters from these field experiments indicate that palms fertilised with SRF in a replant and new jungle clearing are fairly comparable with palms using CIF.However in the terraced jungle clearing palms were of poorer visual appearance in most SRF treatments.This is possibly attributed to the inherent nutrient reserves in new jungle clearing and in a replant situation from previous plantings.The decaying oil palm debris in a replant also release nutrients into the soil.However in teracced areas palms were planted on cut-out-sub-oil on the terraces where soil nutrient reserves are minimal.Foliar analysis results indicated that palms fertilised with SRF had distinctly lower leaf K and to a lesser extent leaf N levels particularly in experiment 6.

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Abstract

Results from four nursery and three field experiments investigating the effects of commercially available slow release fertilizer SRF on oil palm are reported here.Five types of SRF evaluated in these experiments are AGROBLEN - 16:9:8:3 A1 WOODACE - 10:10:5:2 W1 WOODACE - 12:6:6:2 W2 KOKEI - 5:5:5:1 K1 and KOKEI - 14:8:6:5 K2.In the nursery trials experiments 1 and 2 evaluated the performance of SRF in the cultivation of normal 12-month-old oil palm seedings under sprinkle and drip irrigation respectively.A total of 20 treatment combinations from the five SRF were tested against the control standard inorganic manuring.In experiments 3 and 4 the performance of SRF to raise advanced planting material APM of up to 18 months old were evaluated under sprinkler and drip irrigation respectively.A total of 24 treatment combinations of SRF were tested against the control.Comparative studies with respect to vegetative growth parameters leaf nutrient analysia results and dry matter yield for the various treatments at predetermined intervals are discussed in these experiments.Overall results indicate the superiority of the control compared with combinations of SRF tested.Leaf nutrient analysis results indicate that seedlings manured with SRF were significantly lower in leaf K and N levels compared with the control.In the field trials experiment 5 and 6 were carried out on Rengam series soil Typic Paleudult testing formulations of A1 and W2 in an oil palm replant and a terraced jungle clearing respectively.Rates of W2 tested ranged from 10-30 pellets/palm while A1 was tested at 300-500g/palm.Experiment 7 was carried out on sandy colluvium testing 8 and 5 treatment combinations of W2 and K2 respectively in a flat jungle clearing.Rates of W2 and K2 tested ranged from 10-35 pellets/palm.Both visual observation and vegetative parameters from these field experiments indicate that palms fertilised with SRF in a replant and new jungle clearing are fairly comparable with palms using CIF.However in the terraced jungle clearing palms were of poorer visual appearance in most SRF treatments.This is possibly attributed to the inherent nutrient reserves in new jungle clearing and in a replant situation from previous plantings.The decaying oil palm debris in a replant also release nutrients into the soil.However in teracced areas palms were planted on cut-out-sub-oil on the terraces where soil nutrient reserves are minimal.Foliar analysis results indicated that palms fertilised with SRF had distinctly lower leaf K and to a lesser extent leaf N levels particularly in experiment 6.

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Item Type:	Proceedings Paper
Additional Information:	16 tables 5 refs.
AGROVOC Term:	OIL PALMS
AGROVOC Term:	OIL CROPS
AGROVOC Term:	FERTILIZERS
AGROVOC Term:	FERTILIZER COMBINATIONS
AGROVOC Term:	MALAYSIA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:27
URI:	http://webagris.upm.edu.my/id/eprint/16514

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