GRAIN SORGHUM WEED CONTROL UPDATE – 2015GRAIN SORGHUM WEED CONTROL UPDATE – 2015Eric P. Prostko, Ph.D.Eric P. Prostko, Ph.D.
Extension Weed SpecialistExtension Weed Specialist
Berrien Co, October 2014
GRAIN SORGHUM WEED CONTROLGRAIN SORGHUM WEED CONTROL
1)1)Start clean!Start clean!2)2)Concep treated seedConcep treated seed3)3)Dual Magnum or Warrant (PRE)Dual Magnum or Warrant (PRE)4)4)Atrazine (POST)Atrazine (POST)5)5)Paraquat (Hooded sprayer)Paraquat (Hooded sprayer)6)6)Mechanical CultivationMechanical Cultivation
Weed Control in Grain Sorghum - 2013
SG-02-13June 341 DAP
NTC Dual II Magnum 7.64EC @ 1 pt/A (PRE)Aatrex 4L @ 48 oz/A (POST)
COC @ 1% v/v (POST)
A New Product to Consider?A New Product to Consider?
• Huskie 2.06ECHuskie 2.06EC• Bayer CropScienceBayer CropScience• Buctril (1.75 lbs/gal) + pyrasulfotole (0.31 Buctril (1.75 lbs/gal) + pyrasulfotole (0.31
lbs/gal)lbs/gal)• MOA = 6 + 27MOA = 6 + 27• Postemergence (13-16 oz/A)Postemergence (13-16 oz/A)• 3-leaf to 12” tall sorghum3-leaf to 12” tall sorghum• Broadleaf weeds, good on pigweedBroadleaf weeds, good on pigweed• Tank-mix with atrazine (16 oz/A)Tank-mix with atrazine (16 oz/A)
Huskie Weed Control/Injury – 2014
NTC Huskie @16 oz/AAatrex @ 16 oz/A
AMS @ 1 lb/ANIS @ 0.25% v/v
Huskie @16 oz/AAMS @ 1 lb/A
NIS @ 0.25% v/v
SG-02-14May 197 DAT
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 - 2014
SG-01-14June 1931 DAP
NTC Dual II Magnum 7.62EC @ 16 oz/A – PREZest 0.33SC @ 12 oz/A – POST +
Atrazine 90DF @ 13.3 oz/A – POST +COC @ 1% v/v - POST
Canola Response to PRE Applied Reflex - 35 DAT
8 oz/A 4 oz/A 2 oz/A
CAN-02-1411/21/14
Average field half-life for Reflex is 100 days
Must be timely with Beyond in canola!1 week too late
NTCNTC
Beyond 1AS @ 4 oz/ABeyond 1AS @ 4 oz/AAdept @ 0.25% v/vAdept @ 0.25% v/v
AMS XTRA @ 2.5% v/vAMS XTRA @ 2.5% v/v2 WAT2 WAT
CAN-01-1412/05/14
Questions or Comments?Questions or [email protected]@uga.eduwww.gaweed.comwww.gaweed.com