Nigeria Agricultural Journal

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Productivity of Cassava, Sorghum and Groundnut Intercrop Using Poultry Manure with Chemical Fertilizer Replacement Combinations

II Ibeawuchi, CI Duruigbo, LU Ihenacho, GO Ihejirika, MO Ofor, OP Obilo, JC Obiefuna


This study was conducted to investigate the effects of NPK 15:15:15 fertilizer replacement combinations with poultry manure on  cassava/groundnut/sorghum intercrop at the Imo State Polytechnic  Umuagwuo Teaching and Research farm Owerri, South east Nigeria. The experiment was laid out using a Randomized Complete Block Design (RCBD) with four replications. The treatment combinations are: NPK  15:15:15 at 0.4kg/ha plus poultry manure at 0 tons/ha, NPK 15:15:15 at 0.3 kg/ha plus 2.5 tons/ha poultry manure, NPK 15:15:15 at 0.2 kg./ha + 5 tons/ha poultry manure, NPK 15:15:15 at 0.1kg/ha +7.5 tons/ha poultry manure. NPK 15:15:15 at 0 kg/ha + 10 tons/ha poultry manure and the control. Crop growth and yield data were measured and analyzed  statistically using analysis of variance. Results indicated that the NPK 15:15:15 at 0kg/ ha + 10 tons/ha poultry manure gave the highest cassava yield of 13.38 tons/ha, sorghum 0.113 tons/ha and groundnut 0.073 tons/ha respectively. Also the highest biomass yield of groundnut of (47.9 kg/ha) was achieved in NPK 0.3 + poultry manure at 2.5 tons/ha while sorghum (297 kg/ha) was obtained in the NPK 0 + 10 tons/ha poultry manure. Soil textural class changed from sandy clay class to loamy sand at post-harvest soil analysis.

Key-words: NPK 15:15:15M poultry manure replacement, cassava, sorghum and groundnut.

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