Table 1 Effect of explanatory variables on dry biomass, %ndfa and primary nutrient concentrations of the different plant species
Response variables | ||||||
|---|---|---|---|---|---|---|
Biomass/plant | %ndfa | %N | P | K | ||
Explanatory variables | Beans | |||||
Cropping treatment | F2,140 = 46.88, P < 0.001 | Week 8: F2,68 = 3.17, P = 0.049 | – | – | F2,121 = 4.412, P = 0.014 | |
Bean variety | F = 1,140 = 5.572, P = 0.021 | – | – | F1,121 = 10.45, P = 0.001 | F1,121 = 14.349, P < 0.001 | |
Week of collection | NA | NA | F1,121 = 291.66, P < 0.001 | F1,121 = 52.89, P < 0.001 | F1,121 = 17.959, P = 0.007 | |
Companion crop identity | – | Week 8: F1,49 = 4.89, P = 0.036 | – | – | F1,98 = 7.48, P < 0.001 | |
Chickpeas | ||||||
Cropping treatment | F1,51 = 3.21, P = 0.082 | F1,50 = 5.01, P = 0.032 | F1,45 = 26.47, P < 0.001 | F1,45 = 14.601, P < 0.001 | F1,45 = 1.051, P = 0.312 | |
Week of collection | NA | F1,50 = 6.10, P = 0.025 | F1,45 = 139.26, P < 0.001 | F1,45 = 57.348, P < 0.001 | F1,45 = 29.049, P < 0.001 | |
Sorghum | ||||||
Cropping treatment | F1,51 = 13.94, P < 0.001 | NA | – | F1,39 = 35.823, P < 0.001 | F1,39 = 21.643, P < 0.001 | |
Week of collection | NA | NA | F1,39 = 78.61, P < 0.001 | – | F1,39 = 89.034, P < 0.001 | |