Objective:       

To evaluate the crop safety and efficacy of Talinor and standard herbicide products in spring wheat.

Materials and Methods:

Eight treatments were evaluated for weed control efficacy and crop tolerance in spring wheat.

The experimental design was a randomized complete block with three replications.  Egan was planted on a 7.5 inch row spacing to a depth of two inches on April 22, 2016. Common lambsquarters, canola, wild oats and wild buckwheat seed were planted in the center of each plot on April 28. Herbicide treatments were applied using a CO2 backpack sprayer with Teejet XR11002 nozzles in 20 GPA of water.  The treatments were applied on May 18 when the wheat was at the two-leaf stage.

Results:       

Crop injury was minor and was primarily associated with waterlogged soil condition, the symptoms of which worsened throughout the growing season.  The predominant weed species present was volunteer canola. All treatments, except Widematch, provided excellent season-long control of canola.  Nevertheless, there were no significant differences in yield or test weight.

Summary:     

Excellent weed control was achieved with all herbicide treatments except Widematch. The rate of Talinor and Coact did not affect weed control or yield.

 

Table 1. Materials and Methods   
Seeding Date: 4/22/2016 Harvest Date: 9/1/2016
Juian Date: 113 Julian Date: 245
Seeding Rate: 120 lb/A Soil Type: Creston SiL
Previous Crop: No-till winter wheat Soil Test: 104-24-652-154
Tillage: Conventional Fertilizer: BC: 235-40-60 DR: 3-14-0

 

 

Table 2. Effect of varying rates of herbicide on agronomic performance of spring wheat             
                                             Treatment                          Rate Crop Injury    Percent Control
    
Percent    BRARA CHEAL POLCO BRARA CEAL POLCO YLD¹ TWT¹
5/28 6/3 6/9 7/1  6/9   8/4  bu/A lb/bu
Check  0.0 6.7 8.3 16.7 0.0 0.0 0.0 0.0 0.0 0.0 55.0 61.1
Talinor +                   Coact +                       COC 2.74 fl oz/a 13.70 fl oz/a 1.00 % v/v 0.0 5.0 6.7 16.7 95.0 95.0 93.3 99.0 99.0 92.0 70.9 61.7
Talinor +                   Coact +                       COC 3.20 fl oz/a 16.00 fl oz/a 1.00 % v/v 6.7 3.3 8.3 16.7 95.0 95.0 93.3 99.0 99.0 98.3 74.2 61.6
Talinor +                   Coact +                        COC 3.60 fl oz/a 18.20 fl oz/a 1.00 % v/v 0.0 3.3 8.3 10.0 95.0 95.0 95.0 99.0 99.0 90.0 70.7 61.4
Huskie 2.07 EC +         NIS 11.00 fl oz/a .025 % v/v 0.0 0.0 6.7 10.0 95.0 95.0 95.0 99.0 99.0 89.7 75.5 61.2
Widematch 1.5 EC 1.00 pt/a 0.0 8.3 8.3 26.7 66.7 86.7 90.0 61.7 79.7 87.7 56.5 61.6
Affinity Tankmix 50 SG + MCPA Ester 3.7 EC 0.60 oz wt/a 0.75 pt/a 0.0 3.3 8.3 18.3 95.0 95.0 93.3 99.0 99.0 81.7 70.2 61.2
Orion 17.00 fl oz/a 0.0 3.3 10.0 15.0 95.0 95.0 95.0 99.0 99.0 90.7 72.5 61.2
Mean  0.8 4.2 8.1 16.3 79.6 82.1 81.9 82.0 84.2 78.8 68.2 61.4
CV  489.9 114.1 83.7 89.9 9.3 1.8 13.0 13.0 11.0 13.1 20.4 0.5
LSD  ns ns ns ns 15.9 2.6 18.7 18.7 16.1 18.1 ns ns
Pr>F  0.4706 0.5713 0.9990 0.8945 0.0001 0.0001 0.0001 0.0001 0.0001 0.0001 0.4936 0.1466
BRABA: canola, CHEAL: common lambsquarters, POLCO: wild buckwheat, YLD: yield, TWT: test weight, ns: nonsignificant             
¹adjusted to 13% moisture