Archive \ Volume.7 2018 Issue 4

Fishpond Wastewater Versus Chemical Fertilizer On Tomato Productivity In Jimma, Oromia Region, Ethiopia

Firew Admasu Hailu , Mulugeta Wakjira , Abebe Getahun

The study was conducted to assess the potential of fish pond culture wastewater fertilizing effect as an organic fertilizer versus artificial fertilizer (DAP) as an inorganic fertilizer on the productivity of tomato farm. The experiment included a wastewater plot (T1) and an inorganic fertilizer plot (T2) and a control plot obtaining water from the source. The experiment required nine equal areas of 2m2 plots for two treatments, and one control with their triplications. Total phosphorous and nitrogen of pond wastewater were analyzed to calculate the balance with chemical composition of inorganic fertilizer (DAP) in percentage and amount of wastewater required. The tomato seeds were germinated, and the equal number of seedlings were transplanted into nine different, but equal areas of 2 m2 plots of two treatments and one control for the comparison of fish wastewater (T1) versus the artificial fertilizer (T2). 40gm of DAP were used per/m2 as the rate recommended by DAEMACE, and about 1.5 inches of water were used per week in the mornings and afternoons. The experiments were conducted in triplicates, and lasted for 90 days. Tomato productivity parameter data were subjected to a one-way analysis of variance using the SPSS Version 16. The result showed that in Olericulture, there was no significant difference between T1 and T2 in all parameters of tomato productivity (P > 0.05). But, both T1 and T2 had a significant difference with the control group (p < 0.05). Therefore, it can be concluded that, the use of wastewater originated from fish culture as a fertilizer for vegetable (tomato) production was preferable, considering its minimum effects on the environment and minimum cost, as compared to the artificial fertilizers.