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Comparative Effect of Organic and Inorganic Fertilizer Treatments on the Growth and Yield of Onion (Allium cepa L)

Adeyeye AS, Ishaku MA, Gadu HO, Olalekan KK, and Lamid WA

The experiment was conducted at the Teaching and Research Farm of Federal University Wukari, Taraba State Nigeria to compare the effect of poultry manure, cow dung, organic manure, NPK (15:15:15) and Urea on the growth and yield of Onion. The recommended rates of poultry (10 t/ha) cow dung (10 t/ha) organic manure (10 t/ha) NPK (400 kg/ha) and Urea (200 kgN/ha) were used as treatments with a control (0 kg/ha). These were arranged in a randomized complete block design with three replications. Measurements were taken on the growth and yield parameters and data collected were analyzed using analysis of variance (ANOVA) and significant means separated by Duncan multiple range tests at 5% probability level. The results revealed that all the treatments significantly (P<0.05) improved the growth and yield parameters of onion. Poultry manure produced significantly higher number of leaves (50.60), shoot weight (20.96 g) and bulb weight (50.60 g). Bulb height was significantly higher in poultry, organic manure and NPK applications. The onion bulb yield is in order of poultry > organic manure > cow dung > NPK > Urea > control. It is concluded that poultry manure application is better for the production of onion.