Table 2.
The treatments and efficacies (4 WAT) of glyphosate plus dicamba combinations on GDR and GDS. K. scoparia in greenhouse conditions.
| Trt | Dicamba dose | Efficacy* | |||
|---|---|---|---|---|---|
| GDR | GDS | ||||
| ------g ae·ha−1------ | ------%------ | ||||
| Glyphosate at 0 g ae·ha-1 | |||||
| 1 | 560 | 0 A | 82(7) a | ||
| 2 | 1400 | 14(3) B | 88(5) a | ||
| Glyphosate at 420 g ae·ha−1 | |||||
| 3 | 350 | 22(8) A | 47(8) a | ||
| 4 | 700 | 13(5) A | 50(9) a | ||
| Glyphosate at 840 g ae·ha−1 | |||||
| 5 | 0 | 45(3) A | 95(1) a | ||
| 6 | 70 | 31(2) B | 80(3) b | ||
| 7 | 140 | 30(3) B | 82(2) bc | ||
| 8 | 280 | 30(5) B | 91(3) ac | ||
| 9 | 560 | 43(3) A | 87(2) ab | ||
| Glyphosate at 1260 g ae·ha−1 | |||||
| 10 | 0 | 51(8) AB | 96(1) a | ||
| 11 | 140 | 40(5) AB | 92(3) ab | ||
| 12 | 280 | 57(9) A | 96(1) a | ||
| 13 | 840 | 24(6) B | 90(4) ab | ||
| 14 | 1400 | 48(7) AB | 85(2) b | ||
| Glyphosate at 2100 g ae·ha−1 | |||||
| 15 | 0 | 95(3) A | 100 a | ||
| 16 | 140 | 56(5) C | 97(2) ab | ||
| 17 | 280 | 59(5) C | 92(3) ab | ||
| 18 | 700 | 93(4) AB | 96(3) ab | ||
| 19 | 1400 | 79(2) C | 91(1) b | ||
| non-treated | 0 | 0 | 0 | 0 | |
*Means of visual injury (n = 20), and the values in parentheses are standard error. The values followed by different letters are significantly (P-value < 0.05) different among the treatments that contain the same dose of glyphosate within each population according to the Bonferroni’s multiple comparisons test.