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Weed Science Overview

Weed Science Overview. Crop & Soil Sciences Weed Science. Tim Murphy Griffin Campus 74% Ext., 20% Res., 6% Instr. Fine Turf, Roadsides, Forages, Noncropland. Stanley Culpepper Tifton Campus 90% Ext., 10% Res. Cotton, vegetables, small grains. Timothy Grey Tifton Campus

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Weed Science Overview

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  1. Weed Science Overview

  2. Crop & Soil Sciences Weed Science Tim Murphy Griffin Campus 74% Ext., 20% Res., 6% Instr. Fine Turf, Roadsides, Forages, Noncropland Stanley Culpepper Tifton Campus 90% Ext., 10% Res. Cotton, vegetables, small grains Timothy Grey Tifton Campus 100% Research Herbicide Fate in Soils, Invasive Weeds, Weed Mgmt. Peanut, Canola Eric Prostko Tifton Campus 100% Extension Peanut, Corn, Sunflowers William Vencill Athens Campus 50% Res., 50% Inst. Herbicide Physiology, Weed Mgmt. Cotton

  3. Weed Science Foci Tropical Spiderwort Glyphosate & ALS-Resistant Palmer amaranth Methyl-Bromide Replacements New Herbicides for Turfgrass Weed Management

  4. METHYL BROMIDE: 400 LBS (98%) • Phasing out of the marketplace • 1999 = 25% reduction • 2001 = 25% reduction • 2003 = 20% reduction • 2005 = gone • (reduce methyl bromide ai over time) NONTREATED CONTROL

  5. Tropical Spiderwort Tropical spiderwort infestation, Cairo, GA, 2001.

  6. Glyphosate-Resistant Palmer Amaranth

  7. ALS-resistant pigweed

  8. Turfgrass Weed Management Weed Management in Sod Production Systems New Herbicides for Weed Management in Fine Turf

  9. Invasive Species Chinese Tallow Tropical Soda Apple

  10. Weed Science Research • 1.6 Total EFT to research • Since 1999, the Weed Science group has published 94 refereed journal articles, 8 book chapters, 259 published abstracts • Funding: $2.5 million since 1999 • Impact: • Research that has lead to critical use exemptions ~$100 million/year and other herbicide registrations have had an economic impact of ~$1.5 million per year • Tropical spiderwort has been most troublesome weed in cotton since 2001 with impact of ~$5.6 million per year in increased control costs • Glyphosate-resistant Palmer amaranth has the potential to have an economic impact of $20 million per year in cotton alone

  11. Weed Science Extension • Cumulative Extension Programming since 1999: • Bulletins: 18 • Research/Extension Public.: 37 • Handbook Articles/Updates: 199 • Popular Press: 96 • Extension Fact Sheets/Circulars: 79 • Newsletters: 148 • Slide sets: 102 • Local County Production Meeting: 438 • Extension Agent Training: 83 • Extension-Sponsored Programs: 49

  12. Weed Science Instruction • CRSS 4340/6340 – Weed Science – Offered on Athens & Tifton campus • ENTO(CRSS)(PATH) 4250/6250 – Transgenic Crops & Pesticide Utilization – Offered on Athens & Tifton campus • ENTO(CRSS)(PATH) 4740/6740 – Integrated Pest Management – Offered on Athens & Tifton campus • CRSS(ENTO)(PATH) 3500 – Turfgrass Pest Management – Athens campus • CRSS 6360 – Weed Science Field Trip • CRSS 8330 – Herbicide Physiology • PHRM 8930 – Chemical Toxicology

  13. Weed Science Instruction • Graduate Students: • Currently: 1 Ph.D.; 3 M.S. • Since 1999: • 3 Ph.D. students • 7 M.S. students • 4 M.P.P.P.M. students

  14. www.gaweed.com

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