2012 Grower Meetings: Diversity and Integration; Keys to Surviving in a Palmer World. Stanley Culpepper, University of Georgia, Tifton
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1 2012 Grower Meetings: Diversity and Integration; Keys to Surviving in a Palmer World Stanley Culpepper, University of Georgia, Tifton
2 Diversity and Integration: Keys to Surviving in a Palmer World BIOLOGY Management programs Integrated to remain sustainable
3 RR Reduced Tillage Cotton Systems Preplant PRE POST1 POST 2 Layby Valor Reflex + Direx No Palmer up Valor + Direx Palmer up, >15 d to plant Direx Palmer up, <15 d to plant add paraquat Reflex + Prowl add paraquat Reflex + Prowl add paraquat RU + Staple OR RU + Dual or Warrant RU + Dual or Warrant Direx + MSMA
4 RR Reduced Tillage Cotton Systems Preplant PRE POST1 POST 2 Layby Valor Reflex + Direx No Palmer up Valor + Direx Palmer up, >15 d to plant Direx Palmer up, <15 d to plant add paraquat Reflex + Prowl add paraquat Reflex + Prowl add paraquat RU + Staple OR RU + Dual or Warrant RU + Dual or Warrant Direx + MSMA APPLY VALOR AND/OR DIREX TO EVERY ACRE; MUST BE PALMER FREE AT PLANTING!!!
5 Valor applied broadcast followed by strip till.
6 RR Reduced Tillage Cotton Systems Preplant PRE POST1 POST 2 Layby Valor Reflex + Direx No Palmer up Valor + Direx Palmer up, >15 d to plant Direx Palmer up, <15 d to plant add paraquat Reflex + Prowl add paraquat Reflex + Prowl add paraquat RU + Staple OR RU + Dual or Warrant RU + Dual or Warrant Direx + MSMA
7 RR Reduced Tillage Cotton Systems Preplant PRE POST1 POST 2 Layby Valor Valor + Direx Reflex + Direx Reflex + Prowl RU + Staple OR RU + Dual or Warrant Direx + MSMA Direx Reflex + Prowl RU + Dual or Warrant RU + Staple wins 7 out of 10 times!
8 RR Reduced Tillage Cotton Systems Preplant PRE POST1 POST 2 Layby Valor Valor + Direx Reflex + Direx Reflex + Prowl RU + Staple OR RU + Dual or Warrant Direx + MSMA Direx Reflex + Prowl RU + Dual or Warrant Consider direct spraying Warrant mixture if more than 6 leaf cotton!
9 Roundup + Warrant applied over AGGRESSIVELY growing LARGE cotton. typical ouch
10 RR Reduced Tillage Cotton Systems Preplant PRE POST1 POST 2 Layby Valor Valor + Direx Reflex + Direx Reflex + Prowl RU + Staple OR RU + Dual or Warrant Direx + MSMA Direx Reflex + Prowl RU + Dual or Warrant No brainer..suprend great option as well!
11 RR Reduced Tillage Cotton Systems Preplant PRE POST1 POST 2 Layby Valor Reflex + Direx RU + Staple Valor + Direx Direx Reflex + Prowl Reflex + Prowl OR RU + Dual or Warrant RU + Dual or Warrant Direx + MSMA add paraquat if Palmer emerged, follow plantback 48 hr within planting; add paraquat d after PRE (10 day after May 10) d after POST1 (12 day after May 10) d after POST2
12 RR Reduced Tillage Cotton Systems Preplant PRE POST1 POST 2 Layby Valor Valor + Direx Direx Reflex + Direx Reflex + Prowl Reflex + Prowl RU + Staple OR RU + Dual or Warrant Allows 2 residuals at planting instead of 3 to reduce injury. RU + Dual or Warrant Direx Perfect timing for thrips application! + MSMA Allows time for activation before PRE breaks down! add paraquat if Palmer emerged, follow plantback 48 hr within planting; add paraquat d after PRE (10 day after May 10) d after POST1 (12 day after May 10) d after POST2
13 Tillage is now a common scene
14 Percent Palmer Amaranth Control with Reflex 1 pt/a PPI or PRE in A 98 A 79 B Irrigated Dryland
15 RR Conventional Tillage Cotton Systems Preplant PRE POST1 POST2 Layby Treflan/Prowl + Reflex 12 oz Reflex 8-12 oz + Direx RU + Staple (Palmer up) or RU + Dual or Warrant Direx + MSMA RU + Dual or Warrant Plant as soon after incorporation as possible
16 Percent Palmer Control with Reflex + Prowl PPI, TyTy, GA. 38 DAT a 80 b c 0 Rototiller Field cultivator Disk
17 None Prowl + Reflex PRE Irrigated May 13 Planted May 14 Irrigated May 19 during emergence Prowl + Reflex PPI - Rototill
18 Roundup Ready PLUS Cotton Incentive (Up to $22) Valor AND Reflex = ($3.00) Cotoran, Cotton Pro, Direx = ($3.00)* Warrant 3 pt = ($4.50)* Dual Magnum 1 pt = ($3.00) Gramoxone Inteon 2 pt = ($1.00) *Will pay on 2 applications
19 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
20 Making the most of your Liberty! Water volume Spray tip and pressure Time of day you spray Palmer size
21 MOST IMPORTANT IS TO HAVE PRESSURE AND NOZZLES THAT GENERALTE MEDIUM ( MICRONS)
22 Late-season Palmer control with Liberty as influenced by time of day a 99 a Macon Co. Dryland 60 % b am 8 c 12 1 pm 6:30 7:00 pm 12 1 am Time of Day for Ignite Applications Ignite POST 1 (5 Palmer), Ignite POST 2 (18 d later), Diuron + MSMA layby
23 Making the most of your Liberty! GPA Time Biggest pigweed in the field is 3 inches!!!!!!!!!!!!!!!! Nozzle Rate
24 Controlling Palmer in LL Cotton Pre-plant PRE POST1 POST 2 Layby Valor or Diuron + Prowl Cotoran + Prowl Liberty + Liberty Diuron + diuron Reflex + Prowl Staple + Prowl Dual Mag MSMA Valor before Palmer emergence; diuron + paraquat less than 5 Palmer 48 hr within planting; add paraquat d after PRE (12 day after May 10) d after POST1 (14 day after May 10) d after POST 2
25 Six Inch GR Palmer Response to Layby or Hooded Spray Options. Macon, a 77 b 69 c Direx + MSMA Ignite + Valor Ignite
26 2012 Liberty Based Programs 1. LibertyLink 2. WideStrike 3. GlyTol LibertyLink
27 Percent GlyTol + LL cotton injury from topical applications 7 DAT Moultrie, leaf cotton a 2 a 1 a 18 b WMax 33 oz Ignite 44 oz WMax + Ignite WMax + Ignite + Dual (1 pt)
28 Percent GlyTol + LL cotton injury from topical applications 7 DAT WMax 33 oz Ignite 44 oz WMax + Ignite Moultrie, leaf cotton 0 a 2 a 1 a 18 b WMax + Ignite + Dual Sequential applications of Liberty and Roundup in 2012 to avoid antagonsim? (1 pt)
29
30 Six Inch GR Palmer Response to Layby or Hooded Spray Options. Macon, a 96 a 77 b 69 c Gramoxone + Direx Direx + MSMA Ignite + Valor Ignite
31 Heavy Residue Deep Turn Adopt Integrated Programs Or You Simply Wont Survive Because of Resistance!!! Hand weed Cultivate
32 : 92% of growers hand-weeded 52% cotton acres at $23.70/A Photo by A.C. York 2010
33 Palmer Seed (#/plant) when Chopping Plants at Cotton Layby. 400, , , , , , , , ,125 50,000 0 Not Chopped Chopped at 6 inch 36,100 Chopped at 1 inch 22,400 Chopped at soil 2010/2011: Sosnoskie/Grey/Webster/Culpepper
34 Developing Integrated Programs
35 Potential Benefits for Georgia Growers 1. Improved Palmer control 2. Protect herbicide chemistry 3. Labor (compared to tillage) 4. Wind and water erosion 5. Prevents GR horseweed 6. Prevents/Lessons GR ryegrass 7. Moisture conservation 8. Reduce herbicide inputs 9. Higher yields on dryland 10. Protection from EPA 11. Reduces thrips damage
36 Potential Challenges for Georgia Growers 1. Blowout impacting stand 2. Incorporate herbicides with when strip tilling 3. Time to get established 4. Increased fertilizer 5. Rubber wheel system 6. Grower comfort
37
38
39 Impact of GR Palmer amaranth on GA % acres Liberty-based Programs
40 1.5 pt of 2,4-D Liberty pt of 2,4-D
41 Clarity 8 oz Liberty + Clarity 8 oz
42 HPPD Liberty + HPPD
43 Herbicide Resistance: Will You Survive? 25 plants per square foot emerge = 1,089,000 plants per acre If resistance is one in a billion then you only need 918 acres to find that plant.
44 Herbicide Resistance: Will You Survive? 25 plants per square foot emerge = 1,089,000 plants per acre DO NOT SPRAY LIBERTY BUT TWICE PER YEAR IN A SOUND PROGRAM!!!
45 Controlling Palmer Without Killing Cotton With Herbicides! Seedling depth and vigor Irrigation Schedule AT-PLANT HERBICIDES Cotoran Diuron Prowl Reflex Soil dry or moist at planting? Staple Combinations
46 Irrigation/Herbicide Scheduling (preliminary as much more work is being conducted) Irrigate before planting P L A N T DO NOT irrigate first hr?? Irrigate DO NOT irrigate 24 hr before or 24 hr after emergence Irrigate
47 Comments or Questions??
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