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• Effect of fertilizer types and ethylene remediation agents on weight loss and shelf life of stored tomato (Solanum lycopersicum L.) fruits

  22-33.

  A. Oduntan

  O. Ogunleye

  T. Moyosoreoluwa

  O.C. Owolabi

  G. Bodunde

  Views:

  85

  This experiment was conducted to determine the influence of fertilizer types and ethylene remediation agents on postharvest shelf-life of tomato fruit. The experiment was conducted at the Federal University of Agriculture, Abeokuta, Nigeria.  Fruits were produced under four fertilizer treatment levels (Poultry manure, NPK 15:15:15, Poultry manure + NPK 15:15:15 and Control) and were harvested at breaker stage of maturity. The post-harvest treatments consist of eight ethylene remediation agents (ERAs) which includes three levels of 1-Methylcyclopropene (0.1 µL/L 1-MCP, 0.3 µL/L 1-MCP, 0.5 µL/L 1-MCP), two levels of Potassium tetraoxomanganate VII (5% 10% KMnO₄), two levels of Zeolite (10 g and 20 g) and Open shelf as control. The parameters observed included fruit weight loss and days to spoilage (1^st, 50% and 100%). It was observed that fruits produced with sole poultry manure and NPK 15-15-15 and stored in the media of 5% KMnO₄ had a shelf life of 45 days, longer than observed in other fertilizer regimes. Fruits stored in 0.3 µL/L1-MCP, 0.5µL/L1-MCP and 5% KMnO₄ concentrations as ERAs had reduced weight loss and delayed spoilage that translated to longer shelf-life. Fruits grown with poultry manure and treated with 0.3 µL/L1-MCP, 0.5µL/L1-MCP and 5% KMnO₄ had better performance in terms of fruit firmness and shelf life compared to other treatments. The use of either 1-MCP or 5% KMnO₄ is recommended as efficient ethylene scavengers in a storage medium for tomato fruit shelf-life extension.

• Germination, seedling growth and dry matter accumulation of Cola nitida in the nursery as affected by seed biotype colour and storage duration in dodecahedron pyramidal device

  67-76

  S. B. Boladale

  A.O. Oduntan

  L. Hammed

  F.O. Olasantan

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  0

  Long dormancy period and non-uniformity growth patterns of Cola nitida pose challenges for kola farmers, discouraging them from establishing kola plantations. Experiment was conducted at Federal University of Agriculture, Abeokuta, Ogun State, Nigeria to study the effects of seed colour and curing duration on germination, growth and dry matter yield of C. nitida. Experiment was 3 × 4 factorial, laid out in Completely Randomized Design. Treatments comprised seed colour (red, pink & white) and curing duration (12, 8, 4, and 0 weeks). The experiment had 12 treatments; each replicated three times. Data collected on germination, growth and dry matter were subjected to analysis of variance and means were separated using Duncan’s Multiple Range Test (P ≤ 0.05). Germination commenced at 4 WAS, on white, pink and red kola seeds stored for 8, 4 and 6 weeks with 10%, 6.66% and 3.33% respectively. At 8 WAS, white kola seeds stored for 12, 4 and 8 weeks had 93.3, 86.7 and 83.3% germination respectively. At 12 WAS, germination was completed for white kola 12-week stored in Dodecahedron Pyramidal Device (100%), while others range between 60.0 and 96.7%. White, pink and red kola seeds stored for 8, 4 and 12 weeks produced vigorous seedlings that were taller with more leaves than those of an un-stored seed at 18 and 20 WAS. In conclusion, white, pink and red kola (C. nitida) seed stored for 4, 8 and 12 weeks inside Dodecahedron Pyramidal Device resulted in rapid germination and improved morphological growth performance.