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An investigation was carried out at Akure in the rainforest of Nigeria to determinethe effectiveness of sole and amended oil palm bunch ash and spent grain with poultry andturkey manures as sources of fertilizers on the growth of mango seedlings (Magnifera indica L)in the nursery. Eight organic fertilizer treatments, spent grain, oil palm bunch ash, poultrymanure, turkey manures (sole forms), oil palm bunch ash + poultry manure, oil palm bunch ash+ turkey manure, spent grain + poultry manure, spent grain + turkey manure, were applied at8t/ha (40g per 10kg soil filled poly bag) with an NPK fertilizer 400kg/ha (2g per bag) treatmentas a reference and a control (no fertilizer; no manure), replicated three times and arranged in acompletely randomized design. The results showed that the organic fertilizers increasedsignificantly (P |
