I II III IV N Syngent Soyben Insecticide Screening Study Beumont, TX 2017 PLOT PLAN 20 1 LG 32 4 BX 19 8 GX 31 5 O 18 3 B 30 2 LGX 17 6 OX 29 7 G 16 1 LG 28 2 LGX 15 7 G 27 8 GX 14 3 B 26 6 OX 13 5 O 25 4 BX 4 2 LGX 8 3 B 12 8 GX 24 7 G 3 6 OX 7 8 GX 11 6 OX 23 5 O 2 1 LG 6 5 O 10 4 BX 22 3 B 1 4 BX 5 7 G 9 2 LGX 21 1 LG Plot size: 4 rows, 30 in. row spcing, 25ft long Vriety: Rep I = CZ 5515 LL, Reps II IV = CZ 7132 LL Note: smller numbers in itlics re plot numbers TREATMENT DESCRIPTION, RATE AND TIMING Trt no. Flg color Description (fl oz/a) 1 Light green Untreted --- 2 Light green with X Orthene 90S + Brigde 0.75 lb i/a + 6.4 3 Blue A21550 1.54 4 Blue with X A21550 2.05 5 Ornge A21550 2.57 6 Ornge with X 1.54 + 0.25 % 7 Green 2.05 + 0.25 % 8 Green with X 2.57 + 0.25 % 86
Syngent Soyben Insecticide Screening Study Agronomic nd Culturl Informtion Experimentl design: Rndomized complete block with 8 tretments nd 4 replictions s: s pplied with hnd-held, CO2-powered, 3-nozzle spry boom (800067 nozzles, 50 mesh screens, 31 gp finl spry volume) on Oct 4 Smpling: Insect sweeps (10 sweeps/plot) on Oct 5 (1 dys fter tretment, DAT), Oct 9 (5 DAT), Oct 11 (7 DAT) nd Oct 13 (9 DAT) Discussion We set up this experiment in our rice strip t the Beumont Center so tht we could irrigte plots when necessry. However, due to hevy rins during the 2017 growing seson (including Hurricne Hrvey) nd lck of insect popultions in these plots, we bndoned these plots. However, cross Aggie Dr. we hd plnted nother soyben test in coopertion with Byer soyben seed division. This experiment ws plnted lter nd contined severl lrge plots tht survived erlier rins before Hurricne Hrvey, s well s Hurricne Hrvey, nd hrbored good popultions of insects when soybens were R5-6. Consequently, we shifted this experiment to these plots just to the west of Aggie Dr. One reson these plots survived Hurricne Hrvey (which hit SE Texs the lst week of August into the first week of September) ws becuse wter from Hrvey drined off these plots reltively quickly (3-4 dys). Results: 1 DAT: All tretments effectively controlled GCW nd VBC (Tble 1). SL popultions were too low for meningful evlution. Stink bug popultions were composed of RBSB, SGSB, GSB nd BSB. None of the tretments significntly reduced stink bug popultions compred to the untreted, but, numericlly, the tnk mix of Orthene nd Brigde gve the best control of stink bugs (Tbles 2 nd 3). Threecornered lflf hopper (CAH) popultions were high in ll tretments, except the tnk mix of Orthene nd Brigde (Tble 4). 5 DAT: Lepidopter popultions were low in ll tretments, including the untreted (Tble 6). When considering stink bugs, ll tretments effectively controlled them, including RBSB (Tble 8). CAH popultions were best controlled by the tnk mix of Orthene nd Brigde (Tble 9). 7 DAT: No Lepidopter were collected from ny of the plots---popultions hd nturlly decresed. Very few stink bugs were collected in ny plots; thus, dt re not very meningful (Tble 11). CAH popultions were reltively low throughout the experiment (Tble 12). 9 DAT: RBSB popultions, prticulrly nymphs, were significntly lower in ll tretments compred to the untreted (Tble 15). Although not significntly different, s rtes of A21550 incresed, so did control with or without Dyne-Amic. Dyne-Amic did not pper to fford better control compred to tretments without Dyne-Amic (Tble 15). None of the tretments controlled CAH popultions (Tble 16). We did not hrvest plots becuse of the effects of Hurricne Hrvey. 87
Syngent Soyben Insecticide Screening Study Tble 1. Men lepidopterous lrve dt in 10 sweeps on Oct 5 (1 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. (fl oz/a) SL GCW VBC Leps Untreted --- 0.0 5.8 1.8 7.5 Orthene 90S + Brigde 0.75 lb i/a + 6.4 0.0 0.0 b 0.0 b 0.0 b A21550 1.54 0.3 0.3 b 0.0 b 0.5 b A21550 2.05 0.0 0.3 b 0.0 b 0.3 b A21550 2.57 0.0 0.0 b 0.0 b 0.0 b 1.54 + 0.25 % 0.0 0.3 b 0.3 b 0.5 b 2.05 + 0.25 % 0.0 0.3 b 0.0 b 0.3 b 2.57 + 0.25 % 0.5 0.0 b 0.0 b 0.5 b NS SL = soyben looper; GCW = green cloverworm; VBC = velvetben cterpillr; Leps = totl lepidopterous lrve Mens in column followed by the sme or no letter re not significntly (NS) different (P = 0.05, ANOVA nd LSD). Tble 2. Men southern green stink bug nd green stink bug dt in 10 sweeps on Oct 5 (1 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. Southern green stink bug Green stink bug (fl oz/a) A N T A N T Untreted --- 0.0 0.0 0.0 0.0 0.0 0.0 Orthene 90S + Brigde 0.75 lb i/a + 6.4 0.0 0.0 0.0 0.0 0.0 0.0 A21550 1.54 0.0 1.3 1.3 0.5 0.0 0.5 A21550 2.05 0.0 0.0 0.0 0.0 0.3 0.3 A21550 2.57 1.3 0.3 1.5 0.5 0.0 0.5 1.54 + 0.25 % 0.0 0.3 0.3 0.0 0.0 0.0 2.05 + 0.25 % 0.0 1.3 1.3 0.0 0.0 0.0 2.57 + 0.25 % 0.0 0.0 0.0 0.0 0.0 0.0 A = dult; N = nymph; T = totl 88
Syngent Soyben Insecticide Screening Study Tble 3. Men redbnded stink bug nd brown stink bug dt in 10 sweeps on Oct 5 (1 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. Totl Redbnded stink bug Brown stink bug stink (fl oz/a) A N T A N T bugs Untreted --- 2.8 0.5 3.3 0.8 0.0 0.8 4.0 Orthene 90S + Brigde 0.75 lb i/a + 6.4 0.3 0.8 1.0 0.0 0.0 0.0 1.0 A21550 1.54 1.0 0.5 1.5 0.5 0.0 0.5 3.8 A21550 2.05 1.0 1.3 2.3 0.3 0.5 0.8 3.3 A21550 2.57 1.3 0.5 1.8 0.8 0.5 1.3 5.0 1.54 + 0.25 % 1.0 1.5 2.5 0.5 0.3 0.8 3.5 2.05 + 0.25 % 1.3 1.5 2.8 0.3 0.3 0.5 4.5 2.57 + 0.25 % 0.5 1.8 2.3 0.5 1.3 1.8 4.0 A = dult; N = nymph; T = totl Tble 4. Men threecornered lflf hopper dt in 10 sweeps on Oct 5 (1 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. (fl oz/a) Adult Nymph Totl Untreted --- 17.0 0.5 17.5 Orthene 90S + Brigde 0.75 lb i/a + 6.4 3.0 0.3 3.3 A21550 1.54 16.5 0.3 16.8 A21550 2.05 13.3 0.3 13.5 A21550 2.57 12.8 1.0 13.8 1.54 + 0.25 % 21.3 0.5 21.8 2.05 + 0.25 % 12.0 0.5 12.5 2.57 + 0.25 % 10.0 0.5 10.5 89
Syngent Soyben Insecticide Screening Study Tble 5. Men miscellneous rthropod dt in 10 sweeps on Oct 5 (1 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. (fl oz/a) GH BCB SPID ASSN Untreted --- 0.0 0.0 0.3 0.3 Orthene 90S + Brigde 0.75 lb i/a + 6.4 0.0 0.0 0.0 0.0 A21550 1.54 0.0 0.0 0.0 0.0 A21550 2.05 4.5 0.3 0.3 0.0 A21550 2.57 0.0 0.0 0.3 0.0 1.54 + 0.25 % 0.0 0.0 0.3 0.0 2.05 + 0.25 % 0.0 0.3 0.0 0.3 2.57 + 0.25 % 3.8 0.0 0.3 0.0 GH = grsshoppers; BCB = bnded cucumber beetle; SPID = spiders; ASSN = ssssin bugs Tble 6. Men lepidopterous lrve dt in 10 sweeps on Oct 9 (5 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. (fl oz/a) SL GCW VBC Leps Untreted --- 0.0 0.3 0.3 0.5 Orthene 90S + Brigde 0.75 lb i/a + 6.4 0.0 0.0 0.0 0.0 A21550 1.54 0.0 0.0 0.0 0.0 A21550 2.05 0.0 0.5 0.0 0.5 A21550 2.57 0.0 0.3 0.0 0.3 1.54 + 0.25 % 0.3 0.0 0.0 0.3 2.05 + 0.25 % 0.0 0.0 0.0 0.0 2.57 + 0.25 % 0.0 0.0 0.0 0.0 SL = soyben looper; GCW = green cloverworm; VBC = velvetben cterpillr; Leps = totl lepidopterous lrve 90
Syngent Soyben Insecticide Screening Study Tble 7. Men southern green stink bug nd green stink bug dt in 10 sweeps on Oct 9 (5 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. Southern green stink Green stink bug (fl oz/a) bug nymph Adult Nymph Totl Untreted --- 0.0 1.3 1.0 2.3 Orthene 90S + Brigde 0.75 lb i/a + 6.4 0.0 0.0 0.0 0.0 A21550 1.54 0.5 0.0 0.3 0.3 A21550 2.05 0.0 0.5 0.3 0.8 A21550 2.57 0.3 0.0 0.0 0.0 1.54 + 0.25 % 0.0 0.0 0.0 0.0 2.05 + 0.25 % 0.0 0.0 0.0 0.0 2.57 + 0.25 % 0.0 0.0 0.0 0.0 Tble 8. Men redbnded stink bug nd brown stink bug dt in 10 sweeps on Oct 9 (5 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. Totl Redbnded stink bug Brown stink bug stink (fl oz/a) A N T A N T bugs Untreted --- 0.8 3.5 4.3 0.5 0.0 b 0.5 7.0 Orthene 90S + Brigde 0.75 lb i/a + 6.4 0.0 0.0 b 0.0 b 0.3 0.0 b 0.3 0.3 b A21550 1.54 0.0 0.3 b 0.3 b 0.0 0.0 b 0.0 1.0 b A21550 2.05 0.3 0.0 b 0.3 b 0.0 0.5 0.5 1.5 b A21550 2.57 0.3 0.0 b 0.3 b 0.0 0.0 b 0.0 0.5 b 1.54 + 0.25 % 0.0 0.0 b 0.0 b 0.8 0.0 b 0.8 0.8 b 2.05 + 0.25 % 0.0 0.0 b 0.0 b 0.3 0.0 b 0.3 0.3 b 2.57 + 0.25 % 0.0 0.0 b 0.0 b 0.8 0.0 b 0.8 0.8 b A = dult; N = nymph; T = totl 91
Syngent Soyben Insecticide Screening Study Tble 9. Men threecornered lflf hopper dt in 10 sweeps on Oct 9 (5 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. (fl oz/a) Adult Nymph Totl Untreted --- 5.0 b 0.0 5.0 b Orthene 90S + Brigde 0.75 lb i/a + 6.4 1.5 c 0.0 1.5 c A21550 1.54 4.5 bc 0.0 4.5 bc A21550 2.05 9.0 b 0.0 9.0 b A21550 2.57 6.5 b 0.0 6.5 b 1.54 + 0.25 % 11.0 b 0.3 11.3 b 2.05 + 0.25 % 6.0 b 0.0 6.0 b 2.57 + 0.25 % 10.8 0.0 10.8 NS Mens in column followed by the sme or no letter re not significntly (NS) different (P = 0.05, ANOVA nd LSD). Tble 10. Men miscellneous rthropod dt in 10 sweeps on Oct 9 (5 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. (fl oz/a) GH SPID ASSN RSB Untreted --- 0.3 0.0 1.3 0.0 Orthene 90S + Brigde 0.75 lb i/a + 6.4 0.0 0.3 0.8 0.0 A21550 1.54 0.0 0.0 0.3 0.0 A21550 2.05 0.0 0.0 0.5 0.0 A21550 2.57 0.0 0.0 0.3 0.0 1.54 + 0.25 % 0.0 0.0 0.3 0.0 2.05 + 0.25 % 0.0 0.0 0.8 0.0 2.57 + 0.25 % 0.0 0.0 0.0 0.5 GH = grsshoppers; SPID = spiders; ASSN = ssssin bugs; RSB = rice stink bug 92
Syngent Soyben Insecticide Screening Study Tble 11. Men redbnded stink bug nd brown stink bug dt in 10 sweeps on Oct 11 (7 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. Brown Totl Redbnded stink bug stink bug stink (fl oz/a) Adult Nymph Totl dult bugs Untreted --- 0.5 0.0 0.5 0.8 1.3 Orthene 90S + Brigde 0.75 lb i/a + 6.4 0.3 0.0 0.3 0.0 0.5 A21550 1.54 1.0 1.3 2.3 0.0 1.0 A21550 2.05 0.0 0.0 0.0 0.3 0.3 A21550 2.57 0.5 0.0 0.5 0.0 0.5 1.54 + 0.25 % 1.5 0.3 1.8 0.8 2.5 2.05 + 0.25 % 0.3 0.0 0.3 0.0 0.3 2.57 + 0.25 % 0.3 0.0 0.3 0.3 0.5 Tble 12. Men threecornered lflf hopper dt in 10 sweeps on Oct 11 (7 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. (fl oz/a) Adult Nymph Totl Untreted --- 8.8 0.0 8.8 Orthene 90S + Brigde 0.75 lb i/a + 6.4 2.0 0.0 2.0 A21550 1.54 6.5 0.3 6.8 A21550 2.05 4.3 0.0 4.3 A21550 2.57 4.8 0.3 5.0 1.54 + 0.25 % 10.3 0.0 10.3 2.05 + 0.25 % 6.0 0.0 6.0 2.57 + 0.25 % 6.0 0.0 6.0 93
Syngent Soyben Insecticide Screening Study Tble 13. Men miscellneous rthropod dt in 10 sweeps on Oct 11 (7 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. (fl oz/a) BCB LH SPID ASSN RSB Untreted --- 0.0 0.0 0.0 0.0 0.0 Orthene 90S + Brigde 0.75 lb i/a + 6.4 0.0 0.0 0.0 0.3 0.0 A21550 1.54 0.0 0.0 0.0 0.3 1.0 A21550 2.05 0.0 0.0 0.0 0.3 0.0 A21550 2.57 0.0 0.3 0.0 0.0 0.0 1.54 + 0.25 % 0.3 0.3 0.3 0.0 1.3 2.05 + 0.25 % 0.0 0.0 0.0 0.3 0.0 2.57 + 0.25 % 0.0 0.0 0.0 0.0 0.0 BCB = bnded cucumber beetle; LH = lefhoppers; SPID = spiders; ASSN = ssssin bugs; RSB = rice stink bug Tble 14. Men southern green stink bug nd green stink bug dt in 10 sweeps on Oct 13 (9 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. Green Southern green stink bug stink bug (fl oz/a) VBC Adult Nymph Totl nymph Untreted --- 0.3 0.0 1.0 1.0 0.0 Orthene 90S + Brigde 0.75 lb i/a + 6.4 0.0 0.0 0.0 0.0 0.0 A21550 1.54 0.0 0.0 0.0 0.0 0.0 A21550 2.05 0.0 0.0 0.0 0.0 0.0 A21550 2.57 0.0 0.0 0.0 0.0 0.0 1.54 + 0.25 % 0.0 0.0 0.0 0.0 0.3 2.05 + 0.25 % 0.0 0.0 0.0 0.0 0.0 2.57 + 0.25 % 0.0 0.3 0.0 0.3 0.0 94
Syngent Soyben Insecticide Screening Study Tble 15. Men redbnded stink bug nd brown stink bug dt in 10 sweeps on Oct 13 (9 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. Totl Redbnded stink bug Brown stink bug stink (fl oz/a) A N T A N T bugs Untreted --- 3.5 2.8 6.3 0.5 0.3 0.8 8.0 Orthene 90S + Brigde 0.75 lb i/a + 6.4 0.8 0.0 b 0.8 b 0.3 0.0 0.3 1.0 b A21550 1.54 1.3 0.0 b 1.3 b 0.3 0.0 0.3 1.5 b A21550 2.05 1.0 0.0 b 1.0 b 0.8 0.0 0.8 1.8 b A21550 2.57 0.5 0.0 b 0.5 b 0.0 0.0 0.0 0.5 b 1.54 + 0.25 % 2.5 0.0 b 2.5 b 0.3 0.0 0.3 3.0 b 2.05 + 0.25 % 1.5 0.0 b 1.5 b 0.5 0.0 0.5 2.0 b 2.57 + 0.25 % 1.3 0.0 b 1.3 b 0.8 0.0 0.8 2.3 b NS NS NS NS A = dult; N = nymph; T = totl Mens in column followed by the sme or no letter re not significntly (NS) different (P = 0.05, ANOVA nd LSD). Tble 16. Men threecornered lflf hopper nd miscellneous rthropod dt in 10 sweeps on Oct 13 (9 DAT) for Syngent soyben insecticide screening. Beumont, TX. 2017. (fl oz/a) CAH BCB LH SPID ASSN RSB Untreted --- 11.5 0.0 0.3 0.3 0.3 0.0 Orthene 90S + Brigde 0.75 lb i/a + 6.4 4.3 0.0 0.0 0.0 0.3 0.0 A21550 1.54 13.0 0.3 0.0 0.0 0.3 0.3 A21550 2.05 11.8 0.0 0.0 0.0 0.0 0.3 A21550 2.57 13.8 0.0 0.0 0.0 0.3 0.0 1.54 + 0.25 % 12.3 0.0 0.0 0.0 0.0 0.0 2.05 + 0.25 % 8.0 0.0 0.5 0.3 0.5 0.0 2.57 + 0.25 % 11.8 0.0 0.0 0.0 0.3 0.0 CAH = threecornered lflf hopper dult; BCB = bnded cucumber beetle; LH = lefhopper; SPID = spider; ASSN = ssssin bug; RSB = rice stink bug 95