Slide Presentation
TITLE
(click title to view slides)
2016 Fumigant Systems
AUTHOR
Stanley Culpepper
Professor and Extension Weed Specialist
University of Georgia
DOWNLOAD PRESENTATION
(right click and select 'Save Target As...')
PowerPoint - 5.5 MB
PDF - 3.8 MB
TABLE OF CONTENTS
2016 Fumigant Systems
Focus Points
Fumigant Systems For Weeds
Telone II Application 12 to 16 " deep
Paladin Pic or Chloropicrin placed 8 inches deep
Metam Application with blades 4" apart applying metam 4" deep - no herbicide under mulch
application picture
Paladin Pic + Vapam TIF
3-WAY; TIF
Nutsedge response to the 3-WAY. Tift Co., 2013.
Nutsedge response to the 3-WAY. Echols Co., 2013.
Fumigant (PPM) Levels In Bed
How Intense is the Population?
Factors Influencing Rate/Control = Keeping Fumigant in the Bed
Nutsedge plants/A as impacted by fumigation time of year. Tifton, 2015.
Nutsedge plants/A as impacted by fumigation time of year. Tifton, 2015.
Fumigant (PPM) Levels In Bed
Fumigant (PPM) Levels In Bed
Spring PlantBack?
Cover Crop Should Establish More Rapidly with Dec Fumigation
Nematode Impact on Cucumber
Fall Fumigation
picture
picture
Single Drip Metam Application - 3 WAT.
Fumigant (PPM) Levels In Bed: 5 Days - Spring Drip and Double Drip
Regulatory Challenges
Paladin Pic Systems
Managing Nutsedge YEAR ROUND
ROTATE DISKING WITH ROUNDUP AND 1 QT 3WK AFTER NUTSEDGE EMERGENCE
Questions or Comments?
SLIDE CONTENTS
2016 Fumigant Systems Stanley Culpepper, University of Georgia Tifton Campus
Focus Points Trifecta gone; 5 systems exist. December fumigation for spring crop. Keeping the fumigant in the bed.
Fumigant Systems For Weeds Paladin Pic + Vapam TIF UGA 3-WAY* TIF 4. UGA 3-WAY LDPE 5. Pic Chlor 60 TIF 3. Paladin Pic TIF All common weeds Good nutsedge, watch grass and pigweed Watch nutsedge, good grass and pigweed Watch nutsedge, grass, and pigweed… ...nematodes?? *UGA 3-WAY: system of Telone II, Pic, Metam
Telone II Application 12 to 16 “ deep
Paladin Pic or Chloropicrin placed 8 inches deep Pic Chlor 60 = 8-10 in. (21 G) Low Nematode Levels
Metam Application with blades 4” apart applying metam 4” deep – no herbicide under mulch
Paladin Pic + Vapam TIF Check
3-WAY; TIF Check UGA 3-WAY. Fall 2013. Tift Co.
Nutsedge response to the 3-WAY. Tift Co., 2013. Plots were 1 bed by 150 feet. Fall soil temp 84. (Veg 43-13) LDPE TIF 89 b 99 a % 160 plant/A 494 plant/A 82,460 plant/A check
Nutsedge response to the 3-WAY. Echols Co., 2013. Plots were 1 bed by 150 feet. Spring soil temp 64. (Veg 13-13) LDPE TIF 65 c 97 a % 290 plant/A 37,265 plant/A 319,250 plant/A check
Fumigant (PPM) Levels In Bed
How Intense is the Population?
Factors Influencing Rate/Control = Keeping Fumigant in the Bed 1. Bed formation/compaction Mulch type Moisture Soil Temp Soil Texture INFLUENCE CONCENTRATION OVER TIME
Nutsedge plants/A as impacted by fumigation time of year. Tifton, 2015. Plots 1 bed by 90 feet. (Veg 2-15). Non-treated control 203,280 plant/A. LSD 5420 UGA 3-WAY LDPE 32224 3581 Dec 11 Feb 5
Nutsedge plants/A as impacted by fumigation time of year. Tifton, 2015. Plots 1 bed by 90 feet. (Veg 2-15). Non-treated control 203,280 plant/A. LSD 5420 UGA 3-WAY LDPE UGA 3-WAY TIF Trifecta + Vapam TIF 32224 3581 484 1451 3872 7018 Dec 11 Feb 5
Fumigant (PPM) Levels In Bed
Fumigant (PPM) Levels In Bed
Spring PlantBack?
Cover Crop Should Establish More Rapidly with Dec Fumigation 2 weeks 3 weeks
Nematode Impact on Cucumber Foster, Sanders, Bhabesh. LSD galling = 0.6.
Fall Fumigation Work rotation to treat lower infested fields in fall???? Higher fumigant rates needed? TIF mulch over LDPE? Herbicides……but injury more likely with those under mulch!!
Single Drip Metam Application – 3 WAT.
Spring Drip Double Drip 6000 7400 15000 15000 15000 15000 Fumigant (PPM) Levels In Bed: 5 Days
http://www.epa.gov/pesticides/reregistration/soil_fumigants/ REGULATORY CHALLENGES
Paladin Pic Systems Light Populations: 40 GPA TIF Moderate to Severe: 50 GPA TIF BE CAREFUL FOR ODOR MANAGEMENT MUST USE TIF MULCH
Managing Nutsedge YEAR ROUND Select the right fumigant system Sandea in crop when feasible Sandea row middles 4. Terminate crops/weeds as soon as crop done
ROTATE DISKING WITH ROUNDUP AND 1 QT 3WK AFTER NUTSEDGE EMERGENCE ADD SANDEA IN WITH ROUNDUP ONCE IF NOT CARRYOVER PROBLEMS
Questions or Comments? Continued Thanks: William UpChurch and Perry Fuller