GRAIN SORGHUM WEED CONTROL UPDATE – 2015 Eric P. Prostko, Ph.D. Extension Weed Specialist Berrien Co, October 2014

GRAIN SORGHUM WEED CONTROL 1)Start clean! 2)Concep treated seed 3)Dual Magnum or Warrant (PRE) 4)Atrazine (POST) 5)Paraquat (Hooded sprayer) 6)Mechanical Cultivation

Weed Control in Grain Sorghum SG June 3 41 DAP NTC Dual II Magnum 1 pt/A (PRE) Aatrex 48 oz/A (POST) 1% v/v (POST)

A New Product to Consider? Huskie 2.06EC Huskie 2.06EC Bayer CropScience Bayer CropScience Buctril (1.75 lbs/gal) + pyrasulfotole (0.31 lbs/gal) Buctril (1.75 lbs/gal) + pyrasulfotole (0.31 lbs/gal) MOA = MOA = Postemergence (13-16 oz/A) Postemergence (13-16 oz/A) 3-leaf to 12” tall sorghum 3-leaf to 12” tall sorghum Broadleaf weeds, good on pigweed Broadleaf weeds, good on pigweed Tank-mix with atrazine (16 oz/A) Tank-mix with atrazine (16 oz/A)

Huskie Weed Control/Injury – 2014 NTC oz/A 16 oz/A 1 lb/A 0.25% v/v oz/A 1 lb/A 0.25% v/v SG May 19 7 DAT

Huskie Injury on Sorghum

Huskie Rotation Restrictions (cotton and peanut are not listed)

Inzen™ Z Grain Sorghum Kansas State Univ. DuPont/Advanta US Resistance to POST applications of ALS herbicides Non-GMO  ALS-resistant shattercane Dual/Cinch/Warrant PRE a must in my opinion  Concep treated seed Stewardship!!! Zest (liquid Accent)

Weed Control in Inzen Sorghum SG June DAP NTC Dual II Magnum 16 oz/A – PRE Zest 12 oz/A – POST + Atrazine 13.3 oz/A – POST + 1% v/v - POST

Don’t Plant Sorghum in Fields Treated with Reflex in the same year!!!!

Current UGA Canola Weed Control Research Howard F. Schwartz, Colorado State University, Bugwood.org

NTC vs. Dual 3.5 oz/A oz/A – PRE CAN /21/14 35 DAT

Canola Response to PRE Applied Reflex - 35 DAT 8 oz/A 4 oz/A2 oz/A CAN /21/14 Average field half-life for Reflex is 100 days

Must be timely with Beyond in canola! 1 week too late NTC Beyond 4 oz/A 0.25% v/v AMS 2.5% v/v 2 WAT CAN /05/14

Questions or Comments?