Sugarcane aphids on the Texas High Plains – The same questions with different answers

Blayne Reed, EA-IPM Hale, Swisher, FloydTexas A&M AgriLife ExtensionSorghum – Sugarcane Aphid Research Exchange Meeting

New Orleans, LAJanuary 7 – 8, 2016

Texas High Plains Sugarcane Aphid Team

Name Affiliation LocationBlayne Reed Texas A&M AgriLife EA-IPM Hale,

Swisher, FloydPlainview, Texas

Pat Porter Texas A&M AgriLife District 2 Entomologist

Lubbock, Texas

Ed Bynum Texas A&M AgriLife District 1 Entomologist

Amarillo, Texas

Tommy Doederlein Texas A&M AgriLife EA-IPM Dawson, Lynn

Lamesa, Texas

Kerry Siders Texas A&M AgriLife EA-IPM Hockley, Cochran, Lamb

Levelland, Texas

Areas of Interest

• Pre-Existing Thresholds– Do they work on the unique High Plains?

• Product Efficacy

• Host Plant Resistance– How does it perform in the field on the unique

High Plains?

• Chemigation– If coverage is an issue…

Materials & Methods

• Efficacy Trials

• Host Plant Resistance (Halfway Station 2015)– 3 resistant lines (NK 7633, SPX 17414, SPX

17514)– 1 susceptible line KS 585– Large plot, 3 reps

• Chemigation– Sivanto @ 5 oz./ac. + 0.25 v/v NIS– 3 “treatments” 1)UTC, 2)Water Wash, 3)Sivanto

Revised Threshold for Texas High Plains

Insecticide selection

--Not labeled--

Labelsuspended

Data: Ed Bynum and Pat Porter, 2015, Bushland

Resistant hybrids have fewer aphids(but still too many if untreated)

Data: Blayne Reed, 2015, Halfway Experiment Station

Resistant hybrids yielded an average of 1,169 lbs./acre more than the susceptible.Market value of $126.29 at $6.05 per bushel.

Data: Blayne Reed, 2015, Halfway Experiment Station

Chemigation is Effective But Not Labeled Yet

Hale Center chemigation trial with 5.0 oz of Sivanto

Data: Blayne Reed, 2015, Hale Center

Take Home• Texas High Plains requires

differing action threshold

• Value to host plant resistance in the Texas High Plains sorghum fields

• Chemigation works! Need label…

Next Steps• Overwintering locations and / or arrival

predictions

• Early Planting Trials– True IPM implementation

• Overwintering predator management

Questions?

Get the latest at http://txscan.blogspot.com