| Variables names | Unit | Description |
| Biomass | kg/ha | quantity of straw used for soil cover in CA |
| Nb Ye CA | numeric | number of years of CA practice on the plot |
| SOW Maize | numeric | maize sowing date expressed in number of days of the year |
| Gap Ma-Cow | numeric | number of days between maize sowing and cowpea sowing |
| Sow-Weed | numeric | number of days between sowing and weeding |
| Sow-Npk | numeric | number of days between sowing and NPK application |
| Sow-Urea | numeric | number of days between sowing and Urea application |
| Grass-15 DAS | percentage | grass cover rate of plots 15 - 20 days after sowing |
| Grass-45 DAS | percentage | grass cover rate of plots 45 - 55 days after sowing |
| Density | plants/ha | maize density per hectare |
| Grain | kg/ha | maize grain yield per hectare |
| Straw | kg/ha | maize straw yield per hectare |
| Year | numeric | experimentation year |