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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Effect of Mineral Fertilization on African Eggplant (Solanum spp.) Productivity in Côte d’Ivoire
Author(s)
Lassina Fondio, Mako François De Paul N’Gbesso and Noupé Diakaria Coulibaly
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DOI:10.17265/2161-6264/2016.03.006
Affiliation(s)
Vegetables and Proteagineous Crops Research Programme, Food Crops Research Station, National Agricultural Research Centre (CNRA), Bouaké, 01 BP 633, Côte d’Ivoire
ABSTRACT
Three African eggplant (Solanum spp.) varieties were assessed in six mineral manures doses T
+ 1/2T, T + 1/4T, T, T – 1/4T, T – 1/2T and without
fertilizer, with reference treatment T
= 300 kg/ha of NPK
10-18-18 applied before transplanting + a mixture of
100 kg/ha of urea and 200 kg/ha of potassium sulphate at 30, 60 and 90 d
after transplanting, to establish fertilization protocol for their cultivation.
The experiment was laid out in split-plot design with three replications with
varieties constituting the main factor and the fertilizer doses as secondary
factor. The main observed parameters were the number
of days to 50% flowering, the fruit number and weight per plant,
individual fruit weight and fruit yields. As results, the interaction between
varieties and fertilizer doses was significantly different only for the number
of days to 50% of flowering (P = 0.0078) and the
fruit number per plant (P = 0.0001), while any significant
difference was observed for individual fruit weight (P = 0.64), fruit weight
per plant (P = 0.74) and fruit yields (P = 0.74). The difference
among the fertilizers treatments was significant for the number of days to
flowering, number of fruits per plant, fruit weight per plant and fruit yield
for Aub33K/06Gn and Aub55N/10K, whereas any significant difference was observed for
these parameters concerning Aub21N/06Du. Whatever the variety, there was not
any significant difference among the fertilizers treatments for the individual
fruit weight. For Aub33K/06Gn and Aub55N/10K
cultivation, the fertilizers doses T – 1/4T and T – 1/2T are suggested, respectively, while a specific
study is proposed for Aub21N/06Du. As perspective, economic
studies are proposed to confirm the above suggested choices of fertilizers
rates.
KEYWORDS
African eggplant, fertilization protocol, economic analysis.
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