Table 6.
Effectsa of harvest aids (treatments: paraquat, paraquat + carfentrazone-ethyl, carfentrazone-ethyl, NaClO3, glyphosate) on the seed amino acids alanine (ALA), cysteine (CYS), valine (VAL), methionine (MET), iso-leucine (ISO-LEU), and leucine (LEU) (mg g−1) across two years. Untreated plants were used as the control. Harvest aids were applied at growth stages R6 and R7. The experiment was conducted in 2012 and 2013 in Stoneville, MS.
| Application at R6 | ||||||
| Treatment | ALA | CYS | VAL | MET | ISO-LEU | LEU |
| Untreated | 17.4 | 4.3 | 20.0 | 5.5 | 18.7 | 29.2 |
| Paraquat | 17.4 | 4.2 | 19.9 | 5.4 | 18.7 | 29.3 |
| Paraquat+carfentrazone-ethyl | 17.1 | 4.3 | 19.6 | 5.4 | 18.8 | 29.6 |
| NaClO3 | 17.0 | 4.1 | 19.5 | 5.3 | 19.0 | 30.2 |
| Carfentrazone-ethyl | 17.2 | 4.3 | 19.7 | 5.4 | 18.7 | 29.6 |
| Glyphosate | 17.4 | 4.2 | 20.1 | 5.4 | 19.0 | 29.9 |
| LSD | 0.15 | 0.10 | 0.20 | 0.05 | 0.11 | 0.26 |
| Application at R7 | ||||||
| Treatment | ALA | CYS | VAL | MET | ISO-LEU | LEU |
| Untreated | 17.3 | 4.2 | 19.8 | 5.5 | 18.6 | 29.1 |
| Paraquat | 17.4 | 4.2 | 20.0 | 5.4 | 18.9 | 29.6 |
| Paraquat+carfentrazone-ethyl | 17.3 | 4.2 | 19.8 | 5.4 | 18.5 | 29.0 |
| NaClO3 | 17.6 | 3.9 | 20.3 | 5.4 | 18.9 | 29.6 |
| Carfentrazone-ethyl | 17.2 | 4.3 | 19.6 | 5.4 | 18.5 | 28.9 |
| Glyphosate | 17.3 | 4.3 | 19.8 | 5.5 | 18.6 | 29.2 |
| LSD | 0.16 | 0.09 | 0.23 | 0.07 | 0.16 | 0.32 |
a LSD = Least Significant Difference test, significant at the 5% level. Within each column, the difference between two values is statistically significant if it equals or exceeds the corresponding LSD.