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2012 Cotton Production Meeting
AUTHOR
Stanley Culpepper
Professor and Extension Weed Specialist
University of Georgia
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TABLE OF CONTENTS
2012 Cotton Production Meeting
Diversity and Integration: Keys to Surviving in a Palmer World
What makes Palmer special?
Concept of Overlapping Residuals
RR Reduced Tillage Cotton Systems. 2012.
RR Reduced Tillage Cotton Systems. 2012.
RR Reduced Tillage Cotton Systems. 2012.
RR Reduced Tillage Cotton Systems. 2012.
RR Reduced Tillage Cotton Systems. 2012.
RR Reduced Tillage Cotton Systems. 2012.
RR Reduced Tillage Cotton Systems. 2012.
RR Conventional Tillage Cotton Systems. 2012.
Percent Palmer Control, 2010. TyTy, GA. 38 DAT.
RR Conventional Tillage Cotton Systems. 2012.
RR Conventional Tillage Cotton Systems. 2012.
Roundup Ready PLUS Cotton Incentive (Up to $22)
Impact of GR Palmer amaranth on GA.
GR Palmer amaranth control in dryland conservation tillage systems
Making the most of your Ignite!
GreenLeaf TwinJet
MOST IMPORTANT IS TO HAVE PRESSURE AND NOZZLES THAT GENERALTE MEDIUM (300-400 MICRONS)
Late-season Palmer control with Ignite as influenced by time of day.
6.45 am vs 12:30 pm
Making the most of your Ignite
Biggest pigweed in the field is 3 inches!
32 oz/A Gly 4 fb 29 oz/A Ignite on 12” Palmer
Controlling Palmer in LL Cotton. 2012.
Controlling Palmer in LL Cotton. 2012.
Controlling Palmer in LL Cotton. 2012.
2012 Ignite Based Programs
2012 Ignite Based Programs - LibertyLink
ST 4145 Seed Cotton Yield In Response to Ignite-Based Programs. 2012.
2012 Ignite Based Programs - GlyTol LibertyLink
Percent GlyTol + LL cotton injury from topical applications 7 DAT.
Percent GlyTol + LL cotton injury from topical applications 7 DAT.
2012 Ignite Based Programs - WideStrike
Phytogen Widestrike Cotton
ST 4145 Seed Cotton Yield In Response to Ignite-Based Programs. 2012.
field
Six Inch GR Palmer Response to Layby or Hooded Spray Options.
GR Palmer Response to Layby or Hooded Spray Options.
Herbicide Resistance: Will You Survive?
Time Line For Significant Events in Georgia Weed Management
2,4-D (3.8 L) 1.5 pt to 8 inch Palmer
Clarity 1 pt 8 inch Palmer
Managing Palmer Amaranth in DryLand Production!
Georgia growers will not economically survive relying on just herbicides!!!!
Potential Benefits for Georgia Growers
Potential Challenges for Georgia Growers
GR Palmer amaranth influence on cotton lint yield (lb/A) in the Roundup system.
Controlling Palmer Without Killing Cotton With Herbicides!
Cotton response to Reflex PRE as affected by watering regime and cotton vigor.
Cotton response to Reflex PRE as affected by watering regime and cotton vigor.
Cotton response to Reflex PRE as affected by watering regime and cotton vigor.
Georgia growers will not economically survive relying on just herbicides!!!!
SLIDE CONTENTS
2012 Cotton Production Meeting Stanley Culpepper, University of Georgia, Tifton
BIOLOGY Integrated to remain sustainable Management programs Diversity and Integration: Keys to Surviving in a Palmer World
What makes Palmer special? BIOLOGY Integrated to remain sustainable Management programs
Concept of Overlapping Residuals Critical herbicide concentration
RR Reduced Tillage Cotton Systems. 2012. APPLY VALOR AND/OR DIREX TO EVERY ACRE; MUST BE PALMER FREE AT PLANTING!!!
RR Reduced Tillage Cotton Systems. 2012. RU + Staple wins 7 out of 10 times!
RR Reduced Tillage Cotton Systems. 2012. Consider direct spraying Warrant mixture if more than 6 leaf cotton!
RR Reduced Tillage Cotton Systems. 2012. No brainer…..Suprend great option as well!
RR Reduced Tillage Cotton Systems. 2012. No brainer…..Suprend great option as well!
RR Reduced Tillage Cotton Systems. 2012.
RR Reduced Tillage Cotton Systems. 2012. Allows 2 residuals at planting instead of 3 to reduce injury. Perfect timing for thrips application! Allows time for activation before PRE breaks down!
RR Conventional Tillage Cotton Systems. 2012. Need to plant within 5 days of PPI
80 c 99 a 92 b PRE 3 d Reflex applied at 1 pt in combination with Prowl. PPI Rototiller PPI Field cultivator PPI Disk Percent Palmer Control, 2010. TyTy, GA. 38 DAT.
RR Conventional Tillage Cotton Systems. 2012.
RR Conventional Tillage Cotton Systems. 2012.
Roundup Ready PLUS Cotton Incentive (Up to $22) *Will pay on 2 applications
37 18 % acres Ignite-based Programs 0 Impact of GR Palmer amaranth on GA.
GR Palmer amaranth control in dryland conservation tillage systems Prowl + Reflex PRE Roundup + Dual POST Diuron + MSMA PD Prowl + Reflex PRE Ignite + Dual POST Diuron + MSMA PD
Making the most of your Ignite! Water volume Spray tip and pressure Time of day you spray Palmer size
GreenLeaf TwinJet Air Induction
MOST IMPORTANT IS TO HAVE PRESSURE AND NOZZLES THAT GENERALTE MEDIUM (300-400 MICRONS)
99 a 50 b 97 a 6.45 am 8 c Ignite POST 1 (5” Palmer), Ignite POST 2 (18 d later), Diuron + MSMA layby 12 – 1 pm 6:30 – 7:00 pm 12 – 1 am Late-season Palmer control with Ignite as influenced by time of day. Time of Day for Ignite Applications Macon Co. Dryland %
6.45 am 12:30 pm Ignite POST (5”Palmer), Ignite POST 2 (18 d later), diuron + MSMA layby
Rate Making the most of your Ignite GPA Time Nozzle
Rate Making the most of your Ignite GPA Time Nozzle Biggest pigweed in the field is 3 inches!!!!!!!!!!!!!!!!
32 oz/A Gly 4 fb 29 oz/A Ignite on 12” Palmer
Controlling Palmer in LL Cotton. 2012.
Controlling Palmer in LL Cotton. 2012. WANT RESIDUAL HERE BUT KINDA STUCK???
Controlling Palmer in LL Cotton. 2012.
2012 Ignite Based Programs LibertyLink GlyTol LibertyLink WideStrike
2012 Ignite Based Programs LibertyLink Advantage: no injury issue with Ignite Disadvantage: no tolerance to Roundup
2940 2940 3015 3010 All systems had diuron PRE and diuron + MSMA applied at layby. ST 4145 Seed Cotton Yield In Response to Ignite-Based Programs. 2012. No Ignite: 2925
2012 Ignite Based Programs LibertyLink Advantage: no injury issue with Ignite Disadvantage: no tolerance to Roundup GlyTol LibertyLink Advantage: no injury issue with Ignite or Roundup Disadvantage: limited supply, less data on yield
WMax + Ignite WMax 33 oz Ignite 44 oz WMax + Ignite + Dual (1 pt) Percent GlyTol + LL cotton injury from topical applications 7 DAT. Moultrie, 2010 8 leaf cotton 0 a 2 a 1 a 18 b
WMax + Ignite WMax 33 oz Ignite 44 oz WMax + Ignite + Dual (1 pt) Percent GlyTol + LL cotton injury from topical applications 7 DAT. Moultrie, 2010 8 leaf cotton 0 a 2 a 1 a 18 b Sequential applications of Ignite and Roundup in 2012 to avoid antagonsim?
2012 Ignite Based Programs LibertyLink Advantage: no injury issue with Ignite Disadvantage: no tolerance to Roundup GlyTol LibertyLink Advantage: no injury issue with Ignite or Roundup Disadvantage: limited supply, less data on yield WideStrike Advantage: no injury issue Roundup, only tolerance to Ignite Disadvantage: You will get injury from Ignite
Phytogen Widestrike Cotton Confers tolerance to Ignite Tolerance not complete; injury will occur and yield loss can occur if you don’t know what you are doing. According to EPA, Ignite can be applied to widestrike cotton. However, grower is liable as neither Bayer nor Dow recommend or warrant the use of Ignite on Widestrike cotton
2680 b 2916 a 2831 ab 2850 ab All systems had diuron PRE and diuron + MSMA applied at layby. ST 4145 Seed Cotton Yield In Response to Ignite-Based Programs. 2012. No Ignite: 2970
77 b 95 a 96 a 69 c Six Inch GR Palmer Response to Layby or Hooded Spray Options. Macon, 2012. Gramoxone + Direx Direx + MSMA Ignite + Valor Ignite
77 b 95 a 96 a 69 c GR Palmer Response to Layby or Hooded Spray Options. Macon, 2012. Gramoxone + Direx Direx + MSMA Ignite + Valor Ignite DO NOT APPLY IGNITE MORE THAN TWICE A YEAR
Herbicide Resistance: Will You Survive? If resistance is one in a billion then you only need 918 acres to find that plant. (historically resistance is 1 plant in population of 1-10 million…9.18 acres) 25 plants per square foot emerge = 1,089,000 plants per acre
2004: GR Palmer Began Changing Agriculture Forever Time Line For Significant Events in Georgia Weed Management 2009-2011: Significant Adoption of Ignite Programs 2012: GlyTol + LL Cotton Commercialized 2016: Glyphosate + Glufosinate + 2,4-D Glyphosate + Glufosinate + Dicamba 2017/2018: Glyphosate + Glufosinate + HPPD
2,4-D (3.8 L) 1.5 pt to 8 inch Palmer 12 DAT 24 DAT
Clarity 1 pt 8 inch Palmer 12 DAT 24 DAT
Tomorrow if Ignite works Herbicide Cost of $39/A Today RR System Herbicide Cost of $59/A Managing Palmer Amaranth in DryLand Production!!
Heavy Residue Deep Turn Hand weed Cultivate Georgia growers will not economically survive relying on just herbicides!!!!
Potential Benefits for Georgia Growers Improved Palmer control Protect herbicide chemistry Labor (compared to tillage) Wind and water erosion Prevents GR horseweed Prevents/Lessons GR ryegrass Moisture conservation Reduce herbicide inputs Higher yields on dryland Protection from EPA Reduces thrips damage
Potential Challenges for Georgia Growers Blowout impacting stand Incorporate herbicides with when strip tilling Spray then roll, roll then spray? Time to get established Increased fertilizer Rubber wheel system Grower comfort
GR Palmer amaranth influence on cotton lint yield (lb/A) in the Roundup system.* 592 c 690 b Weeds *RR System: Diuron + Reflex + Staple fb Roundup + Parrlay fb Direx + MSMA Inversion + rye Deep inversion 790 a Rye 480 d
Controlling Palmer Without Killing Cotton With Herbicides! Seedling depth and vigor Irrigation Schedule Soil dry or moist at planting? AT-PLANT HERBICIDES Cotoran Diuron Prowl Reflex Staple Combinations
30 b 10 a Cotton response to Reflex PRE as affected by watering regime and cotton vigor. TVP, 2011. Plant Bone Dry 0.4” 0 d, 1 d, 3 d, 5 d Pre-Irrigate 0.75” Plant Into Moisture 0.4” 3 day HIGH VIGOR SHALLOW COTTON
30 b 10 a Cotton response to Reflex PRE as affected by watering regime and cotton vigor. TVP, 2011. Plant Bone Dry 0.4” 0 d, 1 d, 3 d, 5 d Pre-Irrigate 0.75” Plant Into Moisture 0.4” 3 day HIGH VIGOR SHALLOW PLANTED COTTON VS HIGH VIGOR NORMAL 0.67 INCH PLANTED
41 b 18 a Cotton response to Reflex PRE as affected by watering regime and cotton vigor. TVP, 2011. Plant Bone Dry 0.4” 0 d, 1 d, 3 d, 5 d Pre-Irrigate 0.75” Plant Into Moisture 0.4” 3 day LOW VIGOR SHALLOW PLANTED COTTON VS LOW VIGOR NORMAL 0.67 INCH PLANTED
Heavy Residue Deep Turn Hand weed Cultivate Georgia growers will not economically survive relying on just herbicides!!!!