The efficacy of Mycorrhizae, poultry manure and inorganic fertilizer in improving soil fertility and growth of rubber saplings in Iyanomo Southern Nigeria

Screen house trials were conducted in Soil and Plant Nutrition Division Rubber Research Institute of Nigeria. In four rate Mycorrhizae was used (M0, M1, M2 M3), NPK Poultry manure three (0, F1 e F2) giving a total twelve (12) treatment combination. Each replicated times. The rates the are equivalent to 0, 500 g, 0.83 g 600 g/polybag 5 kg soil. experiment laid out completely randomized design 2014 cropping season. which gave rise 12 treatments is as follows: M1F0–Glomusmosseae, M2F0–Glomusclarius, M3F0–Glomusdeserticola, M0F1– Chemical Fertilizer 15:15:15 (NPK), M0F2– Manure, M1F1–Glomusmosseae+ 15:15:15, M2F1–Glomusclarius+ M3F1–Glomusdeserticola + 15: 15:15, M1F2–Glomusmosseae M2F2–Glomusclarius+ M3F2–Glomusdeserticola +Poultry Manure M0F0 Control respectively. samplings obtained before after application soil at 0-15cm depth. data; height, girth leaf area number leaves collected monthly interval for seven (7) months, result showed general improvements chemical properties treatments. all seasons, months recorded higher growth response Hevea brasiliensis saplings plant girth, with values (140.3, 133.0, 90.1, 81.2, 68.9 56.6 cm), (11.9, 10.5, 9.4, 9.1, 7.2 7.1 (69.9, 50.7, 45.6, 32.8, 29.8 26.3 cm) (25.3, 20.0, 15.3, 14.0 13.3) that 7 there significant difference (P<0.05) Organic matter, Nitrogen, Magnesium, Calcium Sodium highest value 6.74, 0.22, 6.40, 2.60 0.25 respectively Glomus deserticola Manure.