Abstract
The increase in world population has caused banana and plantain farmers to use excessive amounts of fertilizers to improve agricultural production. However, this excessive use of fertilizers has negative effects on the nutritional quality and shelf life of the fruit. This study aims to improve the nutritional quality of plantain using an organic fertilizer. Eleven treatments were applied to plantain plants in an experimental design consisting of randomized blocks with 3 replications. Three plantain fingers from the second hand of each bunch were peeled, dried, processed into flour and analyzed for biochemical parameters following fertilizer application. The results showed that treatment T4-1 (15 t/ha of Tithonia diversifolia) significantly improved the protein contents in plantain pulp (5.50%). Similarly, treatment T3-1 (10 t/ha of Tithonia diversifolia) improved the concentrations of potassium (8675 mg/kg), magnesium (900 mg/kg), iron (264.97 mg/kg) and sodium (587.99 mg/kg). Principal component analysis revealed that T3-1 (10 t/ha of Tithonia diversifolia) promotes a better transfer of mineral elements into plantain pulp. This study showed that Tithonia diversifolia-based fertilization significantly improves the nutritional quality of plantain.
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