Research Article
Weed Types and Dynamics Associations with Catena Landscape Positions: Smallholder Farmers’ Knowledge and Perception in Zimbabwe
Table 1
List of independent variables in the binary logistics model.
| | Variable | Definition | Coding of variable | Category | Expected sign |
| | X 1 | Farm location | Top, middle, and bottom | Categorical | +/− | | X 2 | Common tillage system | 1 minimum, 2 conventional | Categorical | +/− | | X 3 | Livestock index | Numerical | Continuous | +/− | | X 4 | Agricultural assets index | Numerical | Continuous | + | | X 5 | Cropping system | 1 monocrop, 2 intercrop | Categorical | +/− | | X 6 | Farming experience | Number of years | Continuous | − | | X 7 | Compound D (7% N 14% P2O5 7% K2O) used | Kgs | Continuous | + | | X 8 | Topdressing AN (34.5% N) used | Kgs | Continuous | + | | X 9 | Manure use | 1 if yes, 0 if no | Dummy | + | | X 10 | Number of seasonal workers | Numerical | Continuous | − | | X 11 | Frequency of weeding per season | Number of times | Continuous | − | | X 12 | Frequency of herbicides use | 1 if yes, otherwise 0 | Dummy | − | | X 13 | Field with first preference | 1 home-field, 2 outer-field | Categorical | +/− | | X 15 | Field with planting preference after first rains | 1 home-field, 2 outer-field | Categorical | +/− |
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