Peanut Weed Control: Are We Out of Silver Bullets? Eric P. - - PowerPoint PPT Presentation

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Peanut Weed Control: Are We Out of Silver Bullets? Eric P. - - PowerPoint PPT Presentation

Sep 22, 2023 281 likes •513 views

Peanut Weed Control: Are We Out of Silver Bullets? Eric P. Prostko, Ph.D. Professor and Extension Weed Specialist Department of Crop & Soil Sciences Feral Hogs: My new #1 enemy! ATTENTION ALL FERAL HOGS! THIS WAY TO SCOTT

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SLIDE 1

Peanut Weed Control: Are We Out of Silver Bullets?

Eric P. Prostko, Ph.D. Professor and Extension Weed Specialist Department of Crop & Soil Sciences

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SLIDE 2

Feral Hogs: My new #1 enemy!

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SLIDE 3

ATTENTION ALL FERAL HOGS!

  • THIS WAY TO SCOTT

MONFORT’S PEANUTS

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SLIDE 4
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SLIDE 5

PPO-Resistance

  • Very popular herbicides
  • 11 species worldwide
  • 4 species in US

– Palmer amaranth

  • AR, IL, TN

(confirmed)

  • AL, MS, NC, SC

(suspected)

– tall waterhemp

  • IL, IN, IA, KS, MO,

MN

– common ragweed

  • DE, NC, OH

– goosegrass

  • NC, VA
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SLIDE 6

What and when was the last herbicide mode of action discovered?

  • HPPD inhibitors (WSSA MOA 27)
  • 1980
  • Sanbird (pyrazolynate) – a rice herbicide

– Sankyo (Japan)

  • Since then………..
  • Callisto (mesotrione) – 2001 (Syngenta)
  • Impact/Armezon (topramezone) – 2006 (AMVAC/BASF)
  • Laudis (tembotrione) - 2007 (Bayer)
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SLIDE 7

What happened to herbicide discovery?

  • herbicide tolerant

crops

  • industry

consolidation

  • registration costs
  • It ain’t easy!
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SLIDE 8

U.S. Planted Acres - 2017

90,886 89,513 45,657 12,055 2,562 1,818 20,000 40,000 60,000 80,000 100,000 Corn Soybean Wheat Cotton Rice Peanut Acres (X 1,000) Crop

NASS June 30, 2017

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SLIDE 9

For a minor crop, we have a great toolbox! (22 active ingredients)

  • Residuals

– Dual Magnum – Outlook – Prowl – Pursuit – Sonalan – Spartan – Strongarm – Valor – Warrant – Zidua

  • Postemergence

– 2,4-DB – Aim – Basagran – Cadre – Classic – Cobra – ET – Fusilade – Gramoxone – Poast – Select – Storm – Ultra Blazer

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SLIDE 10

Discovery and Development Costs

  • f New Crop Protection Products

152 184 256 286 60 120 180 240 300 1995 2000 2005-2008 2010-2014 $(millions) Year

Source: P. McDougall March 2016 For CropLife International

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SLIDE 11

Number of Years Between Synthesis and 1st Sale

8.3 9.1 9.8 11.3 3 6 9 12 15 1995 2000 2005-2008 2010-2014 Years Year

Source: P. McDougall March 2016 For CropLife International

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SLIDE 12

Number of Products (X 1000) Processed Leading to A Single Successful Launch

52.5 139.4 140.0 159.6 0.0 50.0 100.0 150.0 200.0 1995 2000 2005-2008 2010-2014 Year

Source: P. McDougall March 2016 For CropLife International

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SLIDE 13

Peanut Silver Bullets Since the 1980’s

  • Poast – 1985
  • Premerge/Dinitro/Dynanap

(dinoseb) was cancelled in 1986

  • Sonalan – 1988
  • Classic – 1988
  • Paraquat - 1988
  • Pursuit – 1991
  • Zorial/Solicam - 1993
  • Cadre – 1996
  • Prostko starts his Peanut

Weed Science Career - 1997

  • Select - 1998
  • Strongarm - 2000
  • Valor - 2001
  • Spartan - 2004
  • Cobra - 2005
  • Fusilade - 2009
  • Warrant - 2014
  • Zidua - 2017
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SLIDE 14

Zidua in Peanut

  • “As part of BASF’s

internal top secret research program, I have been putting 0.5

  • z of Zidua 85WG on

my breakfast cereal for many years now. It cures everything from athletes foot to

  • dandruff. It is also

very good on Palmer pigweed!!”

– Sandy Newell, BASF

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SLIDE 15

Zidua vs. Dual in Peanut - 2016

PE-08B-16 GA-14N August 10, 2016 105 DAP

NTC

Prowl H2O @ 32 oz/A – PRE Gramoxone 2SL @ 12 oz/A – 14 DAP Storm SL @ 16 oz/A – 14 DAP Zidua 85WG @ 2.0 oz/A – 14 DAP NIS @ 0.25% v/v – 14 DAP Cadre 2AS @ 4 oz/A – 35 DAP 2,4-DB 1.75SL @ 18 oz/A – 35 DAP Zidua 85WG @ 2.0 oz/A – 35 DAP NIS @ 0.25% v/v – 35 DAP Prowl H2O @ 32 oz/A – PRE Gramoxone 2SL @ 12 oz/A – 14 DAP Storm SL @ 16 oz/A – 14 DAP Dual Magnum 7.62EC @ 16 oz/A – 14 DAP Cadre 2AS @ 4 oz/A – 35 DAP 2,4-DB 1.75SL @ 18 oz/A – 35 DAP Dual Magnum 7.62EC @ 16 oz/A – 35 DAP

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SLIDE 16

Future Silver Bullets?

  • Anthem Flex

– FMC – Aim + Zidua

  • Brake

– SePro – fluridone – WSSA MOA 12

  • PDS Inhibitor
  • Nothing else!!!!
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SLIDE 17

Brake vs. Valor Programs* - 2017

PE-07-17 July 28 94 DAP

Valor Program Brake Program NTC

Valor Program Brake Program

Valor Program Brake Program

*Both programs also included Prowl (PRE) and Cadre + Dual Magnum + 2,4-DB (36 DAP)

NTC

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SLIDE 18

Brake/Peanut Injury - 2017

PE-07-17 May 15 21 DAP

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SLIDE 19

What about Zorial/Solicam?

  • Labeled in 1993
  • Fell off the map
  • WSSA MOA 12

– Same as Brake

  • Were some issues

with peanut varieties

  • No data on new

peanut varieties

  • Grass crop rotational

issues (24 months)

  • Cost/A

– $37.50/1.5 lbs

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SLIDE 20

The Future: What can you do?

  • other tactics

– tillage, cover crops, row spacing, crop rotation (especially field corn)

  • use full labeled rates
  • hand-weeding
  • pray for a new mode
  • f action!
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SLIDE 21

Questions? eprostko@uga.edu www.gaweed.com