A three-year experiment was conducted at Saria Research Station to assess the combined effects of
tillage methods and cropping systems with different soil amendments on the soil physicochemical properties.
A randomized complete block design with split plot arrangement of treatments and three replications was used
to conduct the experiment. Four tillage methods were allocated to the main plots and four cropping systems
combined with four different soil amendments allocated to the subplots. Results showed that, except for the
cropping system 2 rows of sorghum + 2 rows of creeping cowpea, all cropping systems combined with compost
in zaï plots raised the soil pH. Bulk density was reduced in plots receiving any cropping systems combined with
any soil amendment. Soil organic carbon was higher (0.603%) in ploughed plots compared to tied-ridging and
zaï plots. Total soil nitrogen was similar in minimum tillage and ploughed plots, but lower in tied-ridging and
zaï plots. The use of ploughing and 2 rows of sorghum + 2 rows of semi-erect or creeping cowpea and 1 row
of sorghum + 1 row of creeping cowpea with both cropping systems receiving compost + NPK + Urea helped
maintain soil productivity thus improving the environmental resilience.