Table 2.
Dry weight inhibitions of trial weeds treated with QYR301 relative to the nontreated control in a greenhouse study 21 d after treatment (DAT).
| Weeds | Dry weight inhibition (SE) | |
|---|---|---|
| 60 g a.i. ha−1 | 120 g a.i. ha−1 | |
| % | ||
| Shepherd’s purse [Capsella bursa-pastoris (L.) Medic.] | 96 (1.0) | 96 (1.8) NSa |
| Rice flat sedge [Cyperus iria L.] | 94 (2.2) | 95 (1.2) NS |
| Barnyard grass [Echinochloa crus-galli (L.) Beauv.] | 83 (1.7) | 87 (1.3)* |
| Black nightshade [Solanum nigrum L.] | 82 (1.3) | 98 (1.1)* |
| Small goosefoot [Chenopodium serotinum L.] | 81 (2.8) | 94 (1.1)* |
| False daisy [Eclipta prostrata L.] | 81 (2.6) | 95 (0.5)* |
| Sheathed monochoria herb [Monochoria vaginalis (Burm. F.) Presl ex Kunth] | 79 (2.3) | 91 (0.8)* |
| Crickweed [Myosoton aquaticum (L.) Moench] | 60 (3.3) | 68 (3.6)* |
| Goosegrass [Eleusine indica (L.) Gaertn.] | 67 (3.3) | 85 (0.2)* |
| Chinese sprangletop [Leptochloa chinensis(L.) Nees] | 67 (3.0) | 93 (0.4)* |
| Late watergrass [Echinochloa phyllopogon (Stapf) Koss.] | 46 (2.2) | 79 (1.5)* |
| Chinese green foxtail [Setaria viridis (L.) Beauv.] | 44 (4.5) | 57 (4.0)* |
| Asia minor bluegrass (Polypogon fugax Nees ex Steud.) | 42 (5.4) | 65 (3.9)* |
| Herba portulacae (Portulaca oleracea L.) | 40 (4.5) | 46 (1.9)* |
| Herb of spanishneedles (Bidens pilosa L.) | 36 (4.7) | 50 (4.7)* |
| Ipomoea purpurea [Pharbitis purpurea (L.) Voigt] | 35 (2.9) | 46 (4.5)* |
| Carolina cranesbill herb (Geranium carolinianum L.) | 31 (2.9) | 30 (4.5) NS |
| Velvetleaf (Abutilon theophrasti Medicus) | 22 (1.4) | 43 (2.1)* |
| Purple nutsedge (Cyperus rotundus L.) | 16 (1.0) | 19 (4.5) NS |
| Rushlike bulrush (Scirpus juncoides Roxb.) | 15 (4.4) | 31 (3.7)* |
| Siberian cocklebur (Xanthium sibiricum Patrin ex Widder) | 14 (4.5) | 34 (4.2)* |
| Wild oat (Avena fatua L.) | 6 (4.0) | 11 (2.0)* |
| Japanese foxtail (Alopecurus japonicus Steud.) | —b | 8 (2.4)* |
| Eleocharis yokoscensis [Heleocharis yokoscensis (Franch. et Savat.) Tang et Wang] | — | —NS |
| Catchweed (Galium aparine L.) | — | —NS |
| Blugrass (Poa annua L.) | — | —NS |
| Digitaria sanguinalis [Digitaria sanguinalis (L.) Scop.] | — | 39 (6.2)* |
| Water foxtail (Alopecurus aequalis Sobol.) | — | 23 (2.1)* |
| Keng Stiffgrass [Sclerochloa kengiana (Ohwi) Tzvel.] | — | 9 (3.0)* |
| Redroot pigweed (Amaranthus retroflexus L.) | — | 62 (0.9)* |
| American sloughgrass [Beckmannia syzigachne (Steud.) Fern.] | — | —NS |
aSignificant differences between the two rates at the P < 0.05 level according to Fisher’s protected LSD test. *Significant; NS, not significant. bDry weight inhibition ≤5%.