Trends In Peanut Weed Control Dr Eric P
- Slides: 43
Trends In Peanut Weed Control Dr. Eric P. Prostko Extension Weed Specialist University of Georgia Tifton December 2002
Trends in Peanut Weed Control Topics for Discussion u tillage u incorporation u cultivation u herbicide use u reduced rates u tank-mixes u weed shifts u resistance u. R&D
Trends in Peanut Weed Control Topics for Discussion u tillage u incorporation u cultivation u herbicide use u reduced rates u tank-mixes u weed shifts u resistance u. R&D
Trends in Peanut Weed Control Strip-Tillage Production Source: UGA Peanut Production Surveys
Strip-Tillage Weed Control u timing of burndown u paraquat, glyphosate, 2, 4 -D, Valor u yellow herbicides? u Incorporation u Florida pusley, evening primrose, Texas millet u perennial weeds?
Trends in Peanut Weed Control Topics for Discussion u tillage u incorporation u cultivation u herbicide use u reduced rates u tank-mixes u weed shifts u resistance u. R&D
Trends in Peanut Weed Control Herbicide Incorporation Source: UGA Peanut Production Surveys
Herbicide Incorporation or Equally as effective Center-pivot irrigation is $2 -7/A cheaper!
Trends in Peanut Weed Control Topics for Discussion u tillage u incorporation u cultivation u herbicide use u reduced rates u tank-mixes u weed shifts u resistance u. R&D
Trends in Peanut Weed Control Mechanical Cultivation Source: UGA Peanut Production Surveys
Why has mechanical cultivation declined? u disease management u better herbicides u time savings u strip-tillage increases u fuel prices
Trends in Peanut Weed Control Topics for Discussion u tillage u incorporation u cultivation u herbicide use u reduced rates u tank-mixes u weed shifts u resistance u. R&D
Trends in Peanut Weed Control Soil-Applied Herbicides - I Source: UGA Peanut Production Surveys
Trends in Peanut Weed Control Soil-Applied Herbicides - II Source: UGA Peanut Production Surveys
Trends in Peanut Weed Control Postemergence Herbicides - I Source: UGA Peanut Production Surveys
Trends in Peanut Weed Control Postemergence Herbicides - II Source: UGA Peanut Production Surveys
Trends in Peanut Weed Control Topics for Discussion u tillage u incorporation u cultivation u herbicide use u reduced rates u tank-mixes u weed shifts u resistance u. R&D
What about reduced rates? u not labeled but not illegal u companies will not support failures u not a guarantee to minimize crop rotation issues u part of a total program u future R&D and new products
Reduced Rates Do they work? ? ?
The Response of Weeds to Various Cadre Rates in Georgia Applied EPOST (C-2 LF)
The Response of Weeds to Various Cadre Rates in Georgia Applied EPOST
Hophornbeam Copperleaf Control Randolph County, GA - 2001 Untreated 6 WAT Strongarm (0. 45 ozs/A) Valor (3 ozs/A) Strongarm 0. 113 ozs + Valor 0. 75 ozs/A
Weed control in peanuts with reduced rates of Strongarm and Valor, 2002. Untreated Attapulgus, GA 7 WAP Strongarm 0. 45 oz/A Valor 3 oz/A Strongarm 0. 113 oz/A + Valor 0. 75 oz/A
Reduced rates can work if……. . u The weed is susceptible u good growing/application conditions exist u the application is timely (small weeds) Full rates help to overcome variability of application due to weed size, improper sprayer calibration, environmental conditions, etc.
What kind of grower might consider using reduced rates? A grower who ……. . . u regularly calibrates his sprayer u has irrigation or can predict when it will rain u gets consistent weed control at full rates u understands the difference between 2” and 4” u can cover his acreage in a short time period u is willing to scout his field regularly u is willing to accept less than 100% weed control u is not a lawyer or close friends with one
Trends in Peanut Weed Control Topics for Discussion u tillage u incorporation u cultivation u herbicide use u reduced rates u tank-mixes u weed shifts u resistance u. R&D
Trends in Peanut Weed Control Tank-Mixes u herbicides u fungicides u insecticides u foliar fertilizers u reductions in time and money u may not be well researched or clearly labeled
Herbicide/Fungicide Tank-Mixes
Trends in Peanut Weed Control Topics for Discussion u tillage u incorporation u cultivation u herbicide use u reduced rates u tank-mixes u weed shifts u resistance u. R&D
Trends in Peanut Weed Control Weed Shifts Top 5 Most Common Weeds in GA Peanuts
Tropical spiderwort Commelina benghalensis uannual or perennial useeds and rhizomes uabove and below ground flowers u 1600 seeds/plant uhigh soil moisture and fertility u problem weed in other countries (Holm’s)
Tropical spiderwort How bad is it? ? ? Grady County, GA 2001
Trends in Peanut Weed Control Topics for Discussion u tillage u incorporation u cultivation u herbicide use u reduced rates u tank-mixes u weed shifts u resistance u. R&D
Herbicide Resistance Around the World u 261 Resistant Biotypes u 157 Species (95 dicots and 62 monocots) u over 210, 000 fields Source: Heap, I. The International Survey of Herbicide Resistant Weeds. Online. Internet. December 2, 2002.
Herbicide Resistance Southeast
Glyphosate Resistance They said it was unlikely! u Horseweed * DE (2000) * TN (2001) u Goosegrass * Malaysia (1997) u Italian Ryegrass * Chile (2001) u Rigid Ryegrass * Australia (1996) * California (1998) * South Africa (2001) Weed Technology, 1997 11: 189 -198
Biotechnology Varieties Planted in the US in 2002 Source: USDA/NASS June 2002
Herbicide Resistant Weeds Strategies for Control/Prevention u prevention is the key!!! u utilize other weed control tactics (cultivation, row patterns, etc). u rotate herbicides with different MOA u rotate crops u scout fields u prevent seed production u clean tillage and harvesting equipment
Trends in Peanut Weed Control Topics for Discussion u tillage u incorporation u cultivation u herbicide use u reduced rates u tank-mixes u weed shifts u resistance u. R&D
Trends in Peanut Weed Control R&D u have had a few good years (Cadre, Select, Strongarm, Valor) u peanut is a minor crop u only 2 products currently in pipeline (Spartan, Cobra) u Will they make it? u Do we need them?
The Peanut Weed Control Toolbox
The Future? My Predictions u limited new herbicides u $25 or less on herbicides u increase in reduced rates and combinations u new uses for older products u increases in resistance u weed shifts – perennials – unknowns
University of Georgia Extension Weed Science (gaweed. com)
- Dr jean peanut butter
- Termite control teton county
- Weed control murphy
- Wow weed control
- Biological method of weed control
- You gave me your peanut butter chocolate chip cookie
- Tongue twister butter bitter
- Is chunky peanut butter homogeneous or heterogeneous
- Subtext example
- "you've got your chocolate in my peanut butter!"
- Peanut crunching crowd
- Private label jellies
- Double mona lisa peanut butter and jelly
- Jessica smith peanut
- Icd 10 seasonal allergies
- How to make a peanut butter and jelly sandwich
- What is the rhyme scheme of these lines?
- Costing
- Peanut
- Kriteria rumah sehat
- Peanut
- We re going on a bear hunt song
- Jewel weed medicinal
- Is sea weed a plant
- Edaphic factors affecting crop production
- Mia's growing like a weed answers
- Introduction of weed
- Sniffable weed
- Smutgrass identification
- Accident weed diagram
- Brain parts
- Less is more chanel
- Dumbi sitti
- Spider mites weed
- Mayil kondai weed
- Onion weed in lakes
- Alien weed definition
- Economic importance of weed
- Veganic weed
- Sandspur removal kit
- Weed wrench
- Weed
- Advantages and disadvantages of integrated weed management
- Weed hun