acta satech Journal of the Life & Physical Sciences Babcock

Comparative effect of organic and inorganic fertilizers on the growth, yield and mineral content of tomato (Lycopersicum Lycopersicum Mill) fruit
*Makinde, A.I.1, Oluwafemi, M.O.2, Adewoyin, D.T.E.1, Alabi, B.A.1, Okunade, R.F.1 and Adedeji, J.A.1
1Department of Agriculture, Federal College of Agriculture, Moor Plantation, Ibadan, Nigeria. 2Department of Horticulture and Landscape Design, Federal College of Agriculture, Akure, Nigeria
September 2017

A field experiment was carried out at the experimental plot of the Institute of Agricultural Research and Training (I.A.R&T), Moor Plantation, Ibadan (latitude 7o22íN and longitude 3o50íSE) to evaluate the effect of fertilizer sources on the growth, yield and nutritional content of tomato. The experiment was carried out during the rainy season of 2014, between May and July. Effectiveness of organic and inorganic fertilizers on growth, yield and nutrient composition of tomato were compared in a Randomized Complete Block Design (RCBD) with four treatments which include sole application each of NPK and organic fertilizer, applied at 100 kg N/ha, 50 kg N/ha Organic fertilizer + 50 kg N/ha of NPK fertilizer and the control replicated three times. The soil samples were collected and tested in the laboratory to know the physical and chemical properties. Tomato premier (variety UC-82-B) was planted at 50 cm ◊ 50 cm at 1 seedling per stand. The Aleshinloye Compost (Grade B) organic fertilizer was applied two weeks before transplanting at 100kg N/ha at the appropriate plots while NPK 15:15:15 was applied 2 weeks after transplanting at 100kg N/ha. Parameters assessed were plant height (cm), number of leaves, and number of branches, stem girth (mm), days to 50 % flowering, number of flowers/plot, number of fruits/plot and fruit weight (g). Nutrient component determined in the laboratory were vitamin A and vitamin C. The fertilizer sources did not affect the growth of tomato. The result also showed that NPK 15:15:15 at 100kg N/ha significantly gave the highest fruit yield of 18.60 t/ha than the lowest yield (4.07 t/ha) obtained from the control plots while other sources are similar with NPK. Vitamin A content was best enhanced by NPK 15:15:15 + organic fertilizer while vitamin C content in tomato fruit was not affected by fertilizer source.
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