Browsing by Author "Sous la Direction de : Pr Salvator Kaboneka (PhD)"

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    Analyse économique de la culture du maïs et évaluation de l’effet du sarrasin comme engrais vert sur la culture du haricot à Kabarore ( KAYANZA, BURUNDI )
    (UB, FS, 2025-12) Nduwayo, Aimé Claude; Sous la Direction de : Pr Salvator Kaboneka (PhD)
    Burundian agriculture is largely dominated by subsistence family farming systems. It faces numerous challenges related to declining soil fertility, low yields of food crops, and the increasing impacts of climate change. In this context, the present study aims to analyze the economic profitability of maize ( Zea mays L.) cultivation and to assess the agronomic impact of using buckwheat ( Fagopyrum esculentum Moench) as green manure on the productivity of common bean ( Phaseolus vulgaris L.) in Kabarore Commune, Kayanza Province. The methodology adopted for this study combines experimental and economic approaches. Sixteen experimental plots belonging to different farmer-researchers were selected for maize cultivation, while four additional plots were used for bean cultivation. An economic analysis based on production costs and revenues was carried out in order to evaluate the profitability of maize cultivation under local conditions. The value–cost ratio (V/C) obtained for the sixteen farmers ranged from a minimum of 1.1 to a maximum of 5.6, with an average of 2.6. Based on the profitability criterion set at a minimum V/C of 2, it was observed that 14 out of the 16 farms studied (nearly 90%) exhibited good to very good economic profitability. As for the bean experment, field trials were established using a randomized complete block design to compare three treatments on dwarf bean (Mukungugu). In terms of average yield, the results revealed very low yield values: 56 kg/ha for T0 (absolute control + lime), 207.83 kg/ha for T1 (farmyard manure + Fomi-Imbura + lime), and 65.5 kg/ha for T2 [buckwheat (Fagopyrum esculentum Moench) + lime]. Although the trial can be considered an agronomic success, the results indicate that the buckwheat treatment was not more advantageous than the limed control treatment. Moreover, under the harsh conditions of the experiment (severe water deficit during the growing period), it was significantly inferior (by about 30%) to treatment T1 (farmyard manure + Fomi-Imbura + lime). At present, and without further repetition of the experiment, it is not possible to draw definitive conclusions about the fertilizing potential of buckwheat under the agro-ecological conditions of Kabarore Commune, Kayanza Province.