EFFECTS OF DIFFERENT FERTILIZER TREATMENTS ON NUTRIENT (PHOSPHORUS) RELEASE PATTERN IN AN ULTISOLS OF ANYIGBA KOGI STATE, NIGERIA
2015
Sunday Okhonfoh Amhakhian | Stephen Abuh
Incubation study was carried out to assess the effect of pacesetter A and B organic fertilizer, sunshine organic fertilizer, cowdung and single super phosphate fertilizer treatment on soil nutrient (P) release pattern. The study was conducted in soil and Environmental Management Laboratory, Kogi State University, Anyigba. Two levels of pacesetter A and B at 100kg/ha, sunshine at 100kg/ha, cowdung at 100kg/ha, SSP at 100k /ha and combination of PSA + SSP at 50kg/ha, PSB + SSP at 50kg/ha, sunshine + SSP at 50kg/ha, Cowdung + SSP at 50kg/ha and a control were used. These fertilizers were separately mixed with soil constituents. The design was CRD of 10 treatments replicated three times giving a total of 30 experimental units The treatments were replicated thirty (30) times on completely randomized design and sampled were taken at 2, 4, 6, 8, 10 weeks intervals after incubation respectively for analysis. Thirty sub-soil samples were dried, analysed and discarded each weeks. The results indicated that Pacesetter A and B (fortified), sunshine releases more phosphorus content following application of equal rate of organic fertilizer at 100kg/ha, while Cowdung, SSP recorded low release. The use of sole organic fertilizer was effective compared to inorganic in terms of responses of some parameters. The sole organic (P) proportion of 100kg/ha gave the best responses to nutrient released in almost all the parameters in the experiment.
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