Abstract:
The objective of this study is to contribute to the promotion of a sustainable production of Sanio
millet in Lower Casamance. This was done by defining the best combination of organic and
mineral fertilization levels for optimal and environmentally friendly growth and production of
Sanio millet. The system used is a randomized complete block design with four replications or
blocks. The studied factor is the organic-mineral fertilization resulting from the combination of
the sub-factors compost with three application rates (0t. ha-1; 5t/ha; 7.5t. ha-1) and the mineralnitrogen fertilization with also three application rates (0%, 50% and 100% of the recommended
mineral fertilization). The results showed that the interaction between compost and mineral
fertilizer was significant on all the parameters studied except for the number of ears. ha-1 and
grain yield. Overall, treatment T8 (7.5 t. ha-1 of compost + 100% recommended mineral
fertilization) gave the best results for height (186.29 cm), crown diameter (14.08 mm), number of
leaves (39 leaves/plant), straw biomass (7.288 t. ha-1), spike biomass (1.219 t. ha-1) and grain
yield (0.7781 t. ha-1) On the other hand, treatment T5 (5 t. ha-1 of compost + 100%
recommended mineral fertilization) gave the best result for the number of tillers with 14
tillers/m². Compost alone (T3 and T6) improved thousand kernel weight with 5.98 g for T3 and
6.22 g for T6. In the context of sustainable management of soil fertility and improvement of
millet production in Lower Casamance, the combination of 7.5 t. ha-1 of compost and 100% of
the recommended dose of mineral fertilizer would be a practice to be experimented in a farming
environment.
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