Authors:
GOMGNIMBOU Alain P.K, COULIBALY Kalifa
, SANON Wilfried
,
SANON Abdramane
, SOULAMA Adama
, OUATTARA Souleymane
,
NACRO B. Hassan
and SEDOGO P. Michel
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Abstract:
This study was conducted in the southern Soudanian zone of Burkina Faso to assessment the
effects of chemical (NPK and urea) and organo-mineral fertilizer on soil chemical parameters in
trial field. An experimental design has been established in a rural area in which plant material
(KVx 775-33-2G variety of cowpea) and three types of fertilization, namely T0 (fallow, control),
T1 (NPK + urea) and T2 (NPK + urea + Compost) were used. The results show that the chemical
parameters of the soils were influenced significantly by treatments at the threshold of 5% for all
parameters except the C:N ratio. The treatment T2 at 0-10 cm depth (T2_10) provided the best
values relative to T1 in terms of pH_H2O, total carbon, total nitrogen, total phosphorus and
available phosphorus that are respectively 5.91, 0.91%, 0.072%, 114.98 mg/kg and 5.11 mg/kg.
The study showed that the effects of organo-mineral fertilization on the soil are not immediate
and can be better observed in the medium and long term. This experimental design should be
extended to include fertilization options that can improve soil fertility and intensify cowpea
production.
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