Tuesday, January 8, 2013

Salon H (Marriott Rivercenter Hotel)

Wednesday, January 9, 2013

Salon H (Marriott Rivercenter Hotel)

Thursday, January 10, 2013

Salon H (Marriott Rivercenter Hotel)

William G. Tyson , University of Georgia Cooperative Extension

Jared R. Whitaker , University of Georgia

Guy D. Collins , University of Georgia

Ronnie Barentine , University of Georgia

Don W. Clark , University of Georgia Cooperative Extension

Brian L. Cresswell , University of Georgia Cooperative Extension

D. Shane Curry , University of Georgia Cooperative Extension

Mike Dollar , University of Georgia - Cooperative Extension

James T. Flanders , University of Georgia Cooperative Extension

Mitchell May , University of Georgia Cooperative Extension

Cliff M. Riner , University of Georgia Cooperative Extension

William R. Starr , University of Georgia Cooperative Extension

Christopher T. Tyson , University of Georgia Cooperative Extension

Larry Varnadoe , University of Georgia Cooperative Extension

Due to widespread existence of glyphosate-resistant Palmer amaranth, cotton producers in Georgia have been forced to explore alternative herbicide systems to maintain weed control and maximize cotton yields. One alternative involves the use of residual herbicides along with topical applications of glufosinate (Liberty®). These very effective systems can be implemented on Liberty Link® cotton cultivars, which have excellent tolerance to Liberty. Phytogen cotton cultivars with the WideStrike^TM trait also have a gene that confers tolerance to Liberty; however, tolerance from this trait is less consistent and cotton injury can occur. Research conducted in 2010, 2011, and 2012 assessed variety performance of both Liberty Link and Phytogen Widestrike cultivars in large plot, on-farm trials where Liberty-based herbicide systems were implemented. In 2010, FM 1773 LLB2, FM1735 LLB2, FM 1845 LLB2, PHY 375 WRF, and PHY 565 WRF were evaluated in four locations. In 2011, FM 1773 LLB2, FM 1845 LLB2, ST 4145 LLB2, PHY 375 WRF, PHY 565 WRF, PHY 499 WRF, and PHY 367 WRF were evaluated in seven locations. In 2012, ST 4145 LLB2, ST 5445 LLB2, FM 1845 LLB2, FM 1944 GLB2, PHY 375 WRF, PHY 499 WRF, and PHY 565 WRF were evaluated in twelve locations. Variety performance, with respect to lint yield and fiber quality, was determined to provide producers with information to make informed decisions on variety selection when implementing a Liberty-based herbicide system.

On-Farm Evaluation of Liberty Link and Phytogen Widestrike Cotton Varieties Managed with Liberty-Based Herbicide Systems in Georgia