Combined Influence of Seasonal Variability and Organo-mineral Fertilizer Doses on Egg Plant (Solanum melongena) Cultivation in the Faranah Region of Guinea

Abstract

Aim: The present study determine combined effects of seasonal variability and organo-mineral fertilizer doses on aubergine cultivation. Specifically, this work was evaluated the effects of seasons; then organomineral fertilizer doses on growth and production parameters aubergine. Place and Duration of Study: Each trial was conducted in the Sagbaya market garden area located in the Sirikolony district, urban commune of Faranah Guinea, over a period of five months. Study Design: A randomised complete block design was used, with four levels of compost mixed with Triple 15 in varying proportions repeated three times. Methodology:  Control D0 (0 kg of compost + 0 kg of Triple 15) ; D1 (15000 kg of compost + 50 kg of Triple 15) ; D2 (10000 kg of compost + 100 kg of Triple 15) ; D3 (5000 kg of compost + 150 kg of Triple 15) were tested. The data were analysed using ANOVA and compared using a one-way independent t-test (p < 0.05). Results: The growth and yield parameters analysed showed that the season and the interaction between years and doses influenced the average collar diameter, the average number of fruits per plant and the yield, while the fertilizer doses significantly influenced both, except for fruit length. Parameters analysed, the best agronomic performance was obtained during the 2023-2024 production season (326.42 g/fruit with 52.27 Tt/ha) and with variant D2 (386.67 g/fruit, with 66.88 T/ha), while variant D0 performed less well regardless of the production season. Conclusion: Among the variants, the doses D2 (10 000 kg of compost + 100 kg of triple 15) and D3 (5 000 kg of compost + 150 kg of triple 15) proved to be more productives for both vegetative growth and production, due to their complementary effect and the agroclimatic conditions of the 2023- 2024 growing season.