Table 1. Control efficacy (the % inhibition of the fresh weight) and median efficient concentration (EC50) of RDP after mixed with water and 0.025, 0.05, 0.1, or 0.2% KAO® adjuvant A-134 against Digitaria sanguinalis in the greenhouse.
| Conc. of A-134 (%) | |||||
|---|---|---|---|---|---|
| Water | 0.025 | 0.05 | 0.1 | 0.2 | |
| Dosage of Roundup® (g a.i./ha) | |||||
| 100 | −0.9±3.5bb) | 28.0±3.3a | 26.3±2.9a | 33.9±3.0a | 42.9±3.4a |
| 200 | 29.8±3.9c | 36.8±3.6bc | 42.8±3.1b | 51.1±3.0b | 62.6±5.8a |
| 300 | 29.5±5.7c | 50.6±4.9b | 50.2±4.2b | 67.8±2.5a | 70.2±4.7a |
| 400 | 71.7±1.2 | 69.9±1.9b | 70.6±3.4b | 70.4±1.7b | 79.2±2.8a |
| 500 | 79.4±2.2b | 79.6±1.0b | 83.2±1.6a | 85.8±1.4a | 83.7±1.7a |
| 600 | 82.6±2.5a | 83.5±2.9a | 81.9±2.7a | 83.3±2.7a | 83.0±2.1a |
| ED50 (mg/L) | 366.8a | 233.5b | 224.9bc | 175.8c | 175.8c |
| R.T.I.a) | 100.0 | 157.1 | 163.1 | 208.7 | 260.5 |
a) R.T.I. was the abbreviation of the relative toxic index. b) Means followed by the same letter in each column were not significantly different (p<0.05, LSD test).