Objective:

Compare Talinor to competitive products for crop tolerance and weed control.

Materials and Methods:

The previous crop was a forage mix of barley, oat and peas. The field was fertilized with 9-30-70 on September 21 and Colter winter wheat was planted on September 27, 2016 (Table 1). A supplemental fertilizer application of 75-0-40 was broadcast to the winter wheat crop on May 1, 2017. Herbicide treatments were applied on May 5, 2017 using a CO2 backpack sprayer equipped with TeeJet XR11002 nozzles in a volume of 20 GPA. Crop height averaged 10 inches and plants had a minimum of one tiller. Weeds present at application consisted of pennycress (THLAR), tumble mustard (SSYAL) and prickly lettuce (LACSE) and were five inches in height.

Results:

All treatments afforded excellent crop tolerance (Table 2). Similarly, all treatments provided excellent control of pennycress and tumble mustard, except for Widematch which failed to control pennycress. Few treatments provided acceptable control of prickly lettuce (Table 3). Talinor applied at 16 and 18.2 oz/A provided at least 90% control as did the combination of Affinity tankmix plus Widematch.

Overall, there was a linear relationship between winter wheat yield and weed biomass (Figure 1). All herbicide treatments reduced weed biomass relative to the check, but among the herbicide treatments, Widematch resulted in the greatest weed biomass. Although wheat yields were affected by the level of weed control, drought and high temperature conditions also suppressed yields, which were about one-third of normal. Wheat yields averaged 36 bu/A in this study. Grain protein averaged about 11% in the study and was unaffected by herbicide treatment. Test weights were low, averaging about 57 lb/bu. Interestingly, the highest test weights was observed with Widematch.

Summary:

Talinor treatments afforded the most complete weed control and weed control did improve as the rate of Talinor increased.   

Figure 1

Table 1. Materials and Methods.

Seeding Date: 9/27/2016 Harvest Date: 8/7/2017
Julian Date: 271 Julian Date: 219
Seeding Rate: 125 lb/A Soil Type: Creston SiL
Previous Crop: Forage Mix Soil Test: 70-44-113
Tillage: Conventional Fertilizer: 9-30-70, 75-0-40

Table 2. Effect of Talinor on weed control in winter wheat, Kalispell, MT - 2017.

Treatment Rate 5/12
CI %		 5/20
CI %		 5/26
CI %		 5/20
THLAR %		 5/26
THLAR %		 6/9
THLAR %		 8/3
THLAR %		 5/20
SSYAL %		 5/26
SSYAL %		 6/9
SSYAL %		 8/3
SSYAL %
Check 0 0 0 0 0 0 0 0 0 0 0
CoAct +
Talinor +
Herbimax		 2.75 floz/A +
13.7 floz/A + 1 % v/v


 3

 0


 0 96 98 98 100 97 98 98 98
CoAct +
Talinor +
Herbimax		 3.2 floz/A + 16 floz/A + 1 % v/v 3 0 0 98 98 98 00 98 98 98 100
CoAct +
Talinor +
Herbimax		 3.6 floz/A + 18.2 floz/A + 1 % v/v 2 2 0 97 98 98 100 98 98 98 100
Huskie 2.07 EC +
Activator 90		 11 floz/A + 0.25% v/v 3 0 0 97 98 98 100 98 98 98 100
Widematch 1.5 EC 16 floz/A 2 0 0 57 35 15 0 66 98 97 99
Affinity Tankmix 50 SG +
Widematch 1.5 EC +
Activator 90		 0.6 oz/A + 16 floz/A + 0.25% v/v 3 0 0 80 92 95 97 95 98 98 100
Affinity Tankmix 50 SG +
MCPA Ester 3.7 EC		 0.6 oz/A + 12 flozA 5 0 0 82 90 95 100 98 98 98 100
Orion 17 floz/A 0 0 0 84 86 95 100 98 98 98 100
Mean 2 0 0 77 77 77 77 83 87 87 89
LSD P = 0.05 5.802 1.666 . 14.749 6.886 4.169 3.331 11.915 0.333 0.999 1.053
CV 143.66 519.62 0 11.11 5.15 3.13 2.49 8.29 0.22 0.66 0.69
Treatment Prob (F) 0.6612 0.4726 1 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001

CI: Crop Injury; THLAR: Pennycress; SSYAL: Tumble mustard.

Table 3. Effect of Talinor on weed control in winter wheat, Kalispell, MT - 2017.

Treatment Rate 5/20
LACSE %		 5/26
LACSE %		 6/9
LACSE %		 8/3
LACSE %		 7/3
Weeds
lb/A		 7/3
Wheat
lb/A		 8/7
YLD bu/A		 8/7
PRO %		 8/7
TWT
lb/bu
Check 0 0 0 0 3005 4850 14 11.00 57.6
CoAct +
Talinor +
Herbimax		 2.75 floz/A +
13.7 floz/A +
1 % v/v		 91 88 91 72 201 8658 38 11.38 56.4
CoAct +
Talinor +
Herbimax		 3.2 floz/A +
16 floz/A +
1 % v/v		 96 94 96 90 98 9768 42 11.12 57.6
CoAct +
Talinor +
Herbimax		 3.6 floz/A +
18.2 floz/A +
1 % v/v		 96 95 95 92 181 7692 43 11.11 57.6
Huskie 2.07 EC +
Activator 90		 11 floz/A +
0.25 % v/v		 96 89 93 83 551 6506 41 11.16 56.8
Widematch 1.5 EC 16 floz/A 83 93 95 78 1767 5930 29 10.87 58.9
Affinity Tankmix 50 SG +
Widematch 1.5 EC +
Activator 90		 0.6 oz/A +
16 floz/A +
0.25 % v/v		 85 94 98 94 653 6431 36 11.21 57.8
Affinity Tankmix 50 SG +
MCPA Ester 3.7 EC		 0.6 oz/A +
12 floz/A		 89 91 92 63 592 6594 37 11.15 56.9
Orion 17 floz/A 86 89 91 55 796 6233 40 11.11 57.0
Mean 80 81 83 70 872 6962 36 11.12 57.4
LSD P = 0.05 8 9.485 6.826 23.035 840 2620 10.32 0.447 0.953
CV 5.75 6.73 4.73 19.11 55.7 21.74 16.78 2.32 0.95
Treatment Prob (F) 0.0001 0.0001 0.0001 0.0001 0.0001 0.0316 0.0005 0.5628 0.0029

LASCE: Prickley Lettuce; YLD: yield; PRO: protein; TWT: test weight