Browsing by Author "Etukudo, O. O."

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    EFFECTS OF COW DUNG MANURE AND SINGLE SUPERPHOSPHATE ON SOIL PHOSPHORUS AVAILABILITY, GROWTH AND YIELD OF MAIZE IN A GLEYSOL OF KABBA, NIGERIA
    (Faculty of Agriculture, University of Uyo, Akwabom State, Nigeria, 2016-09-25) Ogundare1, S. K.; Afe, A. I.; Kadiri, W. O. J.; Etukudo, O. O.
    Field experiments were conducted to determine the effect of cow dung amended with single superphosphate on phosphorus availability, growth and yield of maize in a Gleysol. The treatments consisted of sole application of cow dung 10 t ha-1 and reduced levels of cow dung (2, 4 and 6 t ha-1) combined with varying levels of single superphosphate (30, 20 and 10 kg ha-1) fertilizer. Significant treatment effects were observed in plant height and leaf area whereas stem girth was not significantly affected. Leaf phosphorus (P) concentrations were significantly affected by the amendments and the percentage changes ranged from 0.17 - 0.48 and 0.23 - 0.43 in 2011 and 2012 respectively. The P content of maize leaf significantly improved under combined application of cow dung and SSP compared with sole cow dung application and control. The complementary use of cow dung at 4 t per ha + 20 kg per ha SSP produced the highest seed yields of maize (3.21 and 2.56 t per ha) in 2011 and 2012 respectively. It is therefore recommended that the use of cow dung (4 t per ha) combined with 20kg SSP per ha be adopted for maize cultivation in the study area