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LI B E RT Y LI N K                                        S OY B E A N S

     THE LIBERTYLINK TRAIT                                   APPLICATION INFORMATION & BEST
     IN SOYBEANS                                             WEED MANAGEMENT PRACTICES                                                                        RECOMMENDATIONS FOR LIBERTYLINK SOYBEANS
     	 •	 iberty herbicide with the LibertyLink trait
         L                                                   Weed resistance is a serious threat to row crop
         provides the most reliable weed management          production. Intensive management is required to                                                                                              1st Post Application
                                                                                                                                                           Weed Control Program                                                                2nd Post Application
                                                                                                                                                                                                          (Emergence to 14 days)
         solution available.                                 avoid or manage weed resistance, especially
     	 •	 ibertyLink varieties are high-yielding, with no
         L                                                   with driver weeds such as Palmer amaranth.
                                                             Use all practical means to avoid any escaped                                                  Residual pre-emergence,                        Liberty at 29 fl oz/A                If needed, Liberty at
         yield drag or lag.                                                                                                      Scenario One
                                                             weeds going to seed in or around fields. Robust                                               PPI or at planting                             plus residual herbicide              29 fl oz/A
     	 •	 ibertyLink varieties have built-in tolerance
         L                                                   herbicide rates, multiple modes of action and
         to Liberty herbicide, providing excellent           overlapping soil-applied residual herbicides                                                                                                                                      Liberty at 29 fl oz/A
         crop safety.                                                                                                                                      Environmental conditions                       Liberty at 36 fl oz/A
                                                             from burndown through canopy closure are                            Scenario Two                                                                                                  applied 10 days after
                                                                                                                                                           prevent timely application                     plus residual herbicide
     	 •	 iberty is a nonselective contact herbicide that
         L                                                   important practices.                                                                                                                                                              the first application
         provides postemergence control of broadleaf         Proper stewardship of Liberty herbicide is
         and grass weeds, including weeds resistant to       necessary to ensure the long-term sustainability                   1. Start Clean. Start with a clean, weed-free field
                                                                                                                                                                                                                       4.  cenario Two — Environmental Conditions
                                                                                                                                                                                                                           S
         glyphosate and multiple herbicide classes.          of LibertyLink technology and to prevent the                          by using an effective burndown application or                                           Prevent Timely Application:
     	 •	 iberty has a unique mode of action
         L                                                   development of weeds resistant to Liberty.                            conventional tillage.                                                                		 a. If environmental conditions prevent timely
                                                                                                                                                                                                                              
         (Group 10) that offers a nonselective choice        Rotating crops, traits and modes of action allows                                                                                                                Liberty application, a single application of
                                                                                                                                2.  tay Clean. Use an Overlapping Residual
                                                                                                                                   S
         for Integrated Weed Management plans.               for diversity within a herbicide program and sus-                                                                                                                up to 36 fl oz/A may be made.
                                                                                                                                   Weed Control Program. Be aggressive with early
                                                             tains the longevity of any given herbicide chemis-
                                                                                                                                   season weed management to avoid yield loss                                           		 b. If 36 fl oz/A is used for the first application,
                                                                                                                                                                                                                              
     WHERE YOU CAN FIND                                      try. Use cultural, mechanical and chemical weed
                                                                                                                                   and weed escapes. Residual herbicides applied                                              a second application of 29 fl oz/A should
     LIBERTYLINK SOYBEANS                                    control methods as necessary to ensure weeds
                                                                                                                                   at burndown, pre-emergence and/or tankmixed                                                be made 10 days after the first application.
     	 •	 ayer CropScience has broadly licensed
         B                                                   do not produce viable seed and to prevent weed
                                                                                                                                   in the first post application help ensure optimal                                          Increase water and shorten interval between
         the LibertyLink trait to combine high-yielding      escapes from going to seed and depositing in the
                                                                                                                                   weed management, particularly if environmental                                             post applications if canopy is heavy.
         genetics with the powerful, nonselective,           seed bank. Multiple practices to manage or delay
                                                                                                                                   conditions delay timely post applications. Apply                                     5. Additives: Ammonium sulfate (AMS) can be
         postemergence weed control of Liberty.              herbicide resistance are essential as no single
                                                                                                                                   a broad-spectrum, pre-emergence or pre-plant                                             used at a rate of 1.5 lb/A to 3 lb/A. Rates are
                                                             strategy is totally effective.
     	 •	 ibertyLink soybeans are marketed by more
         L                                                                                                                         incorporated residual herbicide such as:                                                 dependent on temperature and potential for
         than 100 seed companies, including HBK Seed.                                                                              Authority Assist (2*, 14), Authority First (2, 14),                                      leaf burn.
                                                               TANKMIX PARTNERS FOR LIBERTY
                                                                                                                                   Enlite® (2, 14), Envive® (2, 14), metolachlor (15),
     	 •	 efer to www.LinkUp.BayerCropScience.us
         R                                                     ON LIBERTYLINK SOYBEANS                                                                                                                                  6.  aximum Seasonal Use: Up to 65 fl oz/A
                                                                                                                                                                                                                           M
                                                                                                                                   metribuzin (5), Prefix (14, 15), Sonic (2), Valor (14),
         for more information.                                 Assure II (1*)
                                                                        ®
                                                                                                Phoenix (14)
                                                                                                          ™                                                                                                                of Liberty can be applied on soybeans per
                                                                                                                                   Valor XLT (2, 14) or Warrant (15). Consider
     Bayer CropScience continues to collaborate with           Classic® (2)                     Poast Plus® (1)                                                                                                            growing season.
                                                                                                                                   expected weed species and populations as
     leading soybean breeding programs to develop              clethodim (1)                    Prefix (14, 15)                    well as environmental variables in the area                                          7. Additional Use Directions:
     high-yielding LibertyLink soybean varieties for           Cobra® (14)                      Pursuit® (2)                                                                                                            		 a.  ake all Liberty applications 70 days before
                                                                                                                                                                                                                              M
                                                                                                                                   when selecting a residual herbicide.
     growers in the United States and Canada. Varieties        FirstRate® (2)                   Raptor™ (2)
                                                                                                                                                                                                                              soybean harvest.
                                                               Fierce® (14, 15)                 Reflex® (14)                    3. Scenario One — Residual Used
                                                                                                                                   
     developed are widely adapted and demonstrate
                                                               Flexstar® (14)                   Resource® (14)                     Pre-emergence, PPI or At Planting:                                                   		 b.  ake all Liberty applications before soybeans
                                                                                                                                                                                                                              M
     yield and agronomic performance as good as or
                                                               Fusilade® DX (1)                 Select Max® (1)                 		 a. Apply Liberty at 29 fl oz/A over the top of
                                                                                                                                                                                                                             begin to bloom. Consult state Extension
     better than the best available commercial checks.
                                                               Fusion® (1)                      Sharpen® (14)                         LibertyLink soybeans from emergence to 14                                               service for additional information on
                                                               Harmony® GT (2)                  Synchrony® XP (2)                     days after crop emergence or when weeds                                                 prebloom period for soybeans in a state.
                                                               metolachlor (15)                 Ultra Blazer® (14)                    are no more than 3 inches to 4 inches tall.                                       		 c.  aximum single application use rate:
                                                                                                                                                                                                                              M
                                                               OpTill® (2, 14)
                                                               * umbers in parentheses denote herbicide MOA as designated by
                                                                N
                                                                                                                                		 b.  pply Liberty at 29 fl oz/A on an as-needed
                                                                                                                                      A                                                                                       36 fl oz/A.
                                                                the Weed Science Society of America.                                  basis following the first application at 29 fl oz/A.


17                                                                                                                              *Numbers in parentheses denote herbicide MOA as designated by the Weed Science Society of America.                                               18
LI B E RT Y LI N K                        S OY B E A N S

     		 d.  o not apply Liberty if soybeans show
           D                                                 top 10 most frequently sprayed                                                        YIELD LOSS DUE TO COMPETITION                              the study shows there is a two percent yield loss
           injury from prior herbicide applications or       weeds in soybeans                                                                     Weeds that emerge with the crop, or shortly
                                                                                                                                                                                                              for every soybean leaf stage delay in applying a
           environmental stress.                                                                                                                                                                              nonselective herbicide to the crop during the
                                                                                                   Max. Weed               Confirmed               thereafter, have the greatest potential to negatively
     		 e.  iberty is not labeled for application through
           L                                                                                                                                                                                                  critical time for weed removal.
                                                                                                   Height with             Glyphosate-             affect yields. The yield loss associated with this
           irrigation systems.                                                                     Liberty at              Resistant               flush of weeds is strongly influenced by how long
                                                                                                   29 fl oz/A1             Weeds                                                                              YIELD LOSS EXAMPLES
     		 f. Liberty-treated fields should not be grazed
                                                                                                                                                  weeds are allowed to remain in the field and
           or used for hay.                                      Foxtail                                                                           compete with crops for light, water and nutrients.         	 •	 tudies out of North Carolina State University
                                                                                                                                                                                                                  S
                                                                                                          12”                                                                                                     and the University of Georgia6 in 2012 show
                                                                 (giant, green)                                                                    Residual herbicides can improve weed control,
     KEY APPLICATION POINTS                                                                                                                                                                                       soybean yield loss of as much as 68 percent
                                                                 Lambsquarters                             6”                                      reduce problematic weeds and extend the
     TO REMEMBER                                                                                                                                                                                                  as a result of Palmer amaranth interference at
                                                                                                                                                   time period between planting and the first
                                                                 Velvetleaf                                4”                                                                                                     a density of one plant per square foot.
     	 •	 niform, thorough spray coverage is essential
         U                                                                                                                                         postemergence treatment of Liberty herbicide.
         to achieve consistent performance.                                                                                                        This allows for flexibility when weather conditions        	 •	 eason-long competition by waterhemp
                                                                                                                                                                                                                  S
                                                                 Cocklebur                                14”
                                                                                                                                                   prevent timely postemergence applications.                     (more than 20 plants per square foot) reduced
     	 •	 se nozzles and pressure that generate a
         U                                                                                                                                                                                                        soybean yields 44 percent in 30-inch rows and
                                                                 Amaranth (Palmer,                                                                 Additionally, using a residual herbicide in your
         medium-size spray droplet.                                                                        4”                        ✔
                                                                 redroot and tumble)                                                               weed control program introduces another                        37 percent in 7.5-inch rows. Waterhemp that
     	 •	 se 15 GPA (for dense canopies, increase
         U                                                                                                                                         herbicide mode of action in the field, improving               emerged as late as the V5 soybean growth
                                                                 Common
         water volume).                                                                                    5”                        ✔             your resistance management program.                            stage reduced yields up to 10 percent 7.
                                                                 waterhemp
     	 •	 aximum performance is achieved when
         M                                                                                                                                         According to a 2010 University of Tennessee
                                                                 Giant ragweed                            12”                        ✔                                                                                                                                    $/Bushel
         applied to actively growing weeds.                                                                                                        study4, cotton and soybean growers lost nearly
                                                                                                                                                                                                                                                            $10                $11                $12
     	 •	Apply from emergence to bloom growth stage.             Morningglory                              8”                                      $138 million due to glyphosate-resistant Palmer
                                                                                                                                                   amaranth. Their weed control costs also increased           Lost $/A* from
     	 •	 equential applications should be made at
         S                                                       Marestail2                             6”-12”                       ✔                                                                                                                     $220               $242               $264
                                                                                                                                                   as follows:                                                 waterhemp
         10 days after the first application, prior to
         bloom.                                                  Johnsongrass                              5”                        ✔             	 •	 78.5 million in increased herbicide costs
                                                                                                                                                       $                                                       Lost $/A* from
                                                                                                                                                                                                                                                           $340               $374               $408
                                                               I
                                                               f more than 29 fl oz/A are used in any single application, see current label for
                                                                                                                                                         $35 per acre on 1.6 million soybean acres             Palmer amaranth
     	 •	Liberty is rainfast in four hours.
                                                             1



                                                             2
                                                               additional use directions.
                                                               May require sequential applications for control.
                                                                                                                                                         $55 per acre on 0.4 million cotton acres
                                                                                                                                                                                                               Lost $/1,000 A*
                                                                                                                                                   	 •	 10 million in increased application costs
                                                                                                                                                       $                                                                                                $22,000            $24,200            $26,400
                                                                                                                                                                                                               from waterhemp
                                                                                                                                                         $5 per acre on 2 million acres
                                                                                                                                                                                                               Lost $/1,000 A* from
                                                                                                                                                   	 •	 49.35 million due to glyphosate-resistant
                                                                                                                                                       $                                                                                                $34,000            $37,400            $40,800
                                                                                                                                                                                                               Palmer amaranth
                         “ eople need to carefully evaluate their current programs
                          P                                                                                                                            weed competition
                          to see the selection pressure put on weeds and modify                                                                          30 percent of soybean acres at 17 percent loss       *Based on a delay of 3-leaf stages resulting in a 6 percent loss of yield. Start yield at 50 bu/A.

                                                                                                                                                         15 percent of cotton acres at 25 percent loss
                          their programs to increase the diversity of their
                          management tactics.”                                                                                                     A study conducted by the University of Nebraska5
                                                             -Bob Hartzler, Iowa State University                                                  determined that the critical period for weed
                                                                                                                                                   removal in soybeans is based upon the soybean
                                                                                                                                                   row spacing. For soybeans planted in 30-, 15-,
                                                                                                                                                   and 7.5-inch rows, the critical removal time is V3,
                                                                                                                                                   V2 and first trifoliate, respectively. Furthermore,




19                                                                                                                                                 4,5,6,7
                                                                                                                                                             See page 36 for source information.                                                                                                                   20

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LibertyLink Liberty Integrated Pest Management_2013 Seed Trait Technology Manual Part 3

  • 1. LI B E RT Y LI N K S OY B E A N S THE LIBERTYLINK TRAIT APPLICATION INFORMATION & BEST IN SOYBEANS WEED MANAGEMENT PRACTICES RECOMMENDATIONS FOR LIBERTYLINK SOYBEANS • iberty herbicide with the LibertyLink trait L Weed resistance is a serious threat to row crop provides the most reliable weed management production. Intensive management is required to 1st Post Application Weed Control Program 2nd Post Application (Emergence to 14 days) solution available. avoid or manage weed resistance, especially • ibertyLink varieties are high-yielding, with no L with driver weeds such as Palmer amaranth. Use all practical means to avoid any escaped Residual pre-emergence, Liberty at 29 fl oz/A If needed, Liberty at yield drag or lag. Scenario One weeds going to seed in or around fields. Robust PPI or at planting plus residual herbicide 29 fl oz/A • ibertyLink varieties have built-in tolerance L herbicide rates, multiple modes of action and to Liberty herbicide, providing excellent overlapping soil-applied residual herbicides Liberty at 29 fl oz/A crop safety. Environmental conditions Liberty at 36 fl oz/A from burndown through canopy closure are Scenario Two applied 10 days after prevent timely application plus residual herbicide • iberty is a nonselective contact herbicide that L important practices. the first application provides postemergence control of broadleaf Proper stewardship of Liberty herbicide is and grass weeds, including weeds resistant to necessary to ensure the long-term sustainability 1. Start Clean. Start with a clean, weed-free field 4. cenario Two — Environmental Conditions S glyphosate and multiple herbicide classes. of LibertyLink technology and to prevent the by using an effective burndown application or Prevent Timely Application: • iberty has a unique mode of action L development of weeds resistant to Liberty. conventional tillage. a. If environmental conditions prevent timely (Group 10) that offers a nonselective choice Rotating crops, traits and modes of action allows Liberty application, a single application of 2. tay Clean. Use an Overlapping Residual S for Integrated Weed Management plans. for diversity within a herbicide program and sus- up to 36 fl oz/A may be made. Weed Control Program. Be aggressive with early tains the longevity of any given herbicide chemis- season weed management to avoid yield loss b. If 36 fl oz/A is used for the first application, WHERE YOU CAN FIND try. Use cultural, mechanical and chemical weed and weed escapes. Residual herbicides applied a second application of 29 fl oz/A should LIBERTYLINK SOYBEANS control methods as necessary to ensure weeds at burndown, pre-emergence and/or tankmixed be made 10 days after the first application. • ayer CropScience has broadly licensed B do not produce viable seed and to prevent weed in the first post application help ensure optimal Increase water and shorten interval between the LibertyLink trait to combine high-yielding escapes from going to seed and depositing in the weed management, particularly if environmental post applications if canopy is heavy. genetics with the powerful, nonselective, seed bank. Multiple practices to manage or delay conditions delay timely post applications. Apply 5. Additives: Ammonium sulfate (AMS) can be postemergence weed control of Liberty. herbicide resistance are essential as no single a broad-spectrum, pre-emergence or pre-plant used at a rate of 1.5 lb/A to 3 lb/A. Rates are strategy is totally effective. • ibertyLink soybeans are marketed by more L incorporated residual herbicide such as: dependent on temperature and potential for than 100 seed companies, including HBK Seed. Authority Assist (2*, 14), Authority First (2, 14), leaf burn. TANKMIX PARTNERS FOR LIBERTY Enlite® (2, 14), Envive® (2, 14), metolachlor (15), • efer to www.LinkUp.BayerCropScience.us R ON LIBERTYLINK SOYBEANS 6. aximum Seasonal Use: Up to 65 fl oz/A M metribuzin (5), Prefix (14, 15), Sonic (2), Valor (14), for more information. Assure II (1*) ® Phoenix (14) ™ of Liberty can be applied on soybeans per Valor XLT (2, 14) or Warrant (15). Consider Bayer CropScience continues to collaborate with Classic® (2) Poast Plus® (1) growing season. expected weed species and populations as leading soybean breeding programs to develop clethodim (1) Prefix (14, 15) well as environmental variables in the area 7. Additional Use Directions: high-yielding LibertyLink soybean varieties for Cobra® (14) Pursuit® (2) a. ake all Liberty applications 70 days before M when selecting a residual herbicide. growers in the United States and Canada. Varieties FirstRate® (2) Raptor™ (2) soybean harvest. Fierce® (14, 15) Reflex® (14) 3. Scenario One — Residual Used developed are widely adapted and demonstrate Flexstar® (14) Resource® (14) Pre-emergence, PPI or At Planting: b. ake all Liberty applications before soybeans M yield and agronomic performance as good as or Fusilade® DX (1) Select Max® (1) a. Apply Liberty at 29 fl oz/A over the top of begin to bloom. Consult state Extension better than the best available commercial checks. Fusion® (1) Sharpen® (14) LibertyLink soybeans from emergence to 14 service for additional information on Harmony® GT (2) Synchrony® XP (2) days after crop emergence or when weeds prebloom period for soybeans in a state. metolachlor (15) Ultra Blazer® (14) are no more than 3 inches to 4 inches tall. c. aximum single application use rate: M OpTill® (2, 14) * umbers in parentheses denote herbicide MOA as designated by N b. pply Liberty at 29 fl oz/A on an as-needed A 36 fl oz/A. the Weed Science Society of America. basis following the first application at 29 fl oz/A. 17 *Numbers in parentheses denote herbicide MOA as designated by the Weed Science Society of America. 18
  • 2. LI B E RT Y LI N K S OY B E A N S d. o not apply Liberty if soybeans show D top 10 most frequently sprayed YIELD LOSS DUE TO COMPETITION the study shows there is a two percent yield loss injury from prior herbicide applications or weeds in soybeans Weeds that emerge with the crop, or shortly for every soybean leaf stage delay in applying a environmental stress. nonselective herbicide to the crop during the Max. Weed Confirmed thereafter, have the greatest potential to negatively e. iberty is not labeled for application through L critical time for weed removal. Height with Glyphosate- affect yields. The yield loss associated with this irrigation systems. Liberty at Resistant flush of weeds is strongly influenced by how long 29 fl oz/A1 Weeds YIELD LOSS EXAMPLES f. Liberty-treated fields should not be grazed weeds are allowed to remain in the field and or used for hay. Foxtail compete with crops for light, water and nutrients. • tudies out of North Carolina State University S 12” and the University of Georgia6 in 2012 show (giant, green) Residual herbicides can improve weed control, KEY APPLICATION POINTS soybean yield loss of as much as 68 percent Lambsquarters 6” reduce problematic weeds and extend the TO REMEMBER as a result of Palmer amaranth interference at time period between planting and the first Velvetleaf 4” a density of one plant per square foot. • niform, thorough spray coverage is essential U postemergence treatment of Liberty herbicide. to achieve consistent performance. This allows for flexibility when weather conditions • eason-long competition by waterhemp S Cocklebur 14” prevent timely postemergence applications. (more than 20 plants per square foot) reduced • se nozzles and pressure that generate a U soybean yields 44 percent in 30-inch rows and Amaranth (Palmer, Additionally, using a residual herbicide in your medium-size spray droplet. 4” ✔ redroot and tumble) weed control program introduces another 37 percent in 7.5-inch rows. Waterhemp that • se 15 GPA (for dense canopies, increase U herbicide mode of action in the field, improving emerged as late as the V5 soybean growth Common water volume). 5” ✔ your resistance management program. stage reduced yields up to 10 percent 7. waterhemp • aximum performance is achieved when M According to a 2010 University of Tennessee Giant ragweed 12” ✔ $/Bushel applied to actively growing weeds. study4, cotton and soybean growers lost nearly $10 $11 $12 • Apply from emergence to bloom growth stage. Morningglory 8” $138 million due to glyphosate-resistant Palmer amaranth. Their weed control costs also increased Lost $/A* from • equential applications should be made at S Marestail2 6”-12” ✔ $220 $242 $264 as follows: waterhemp 10 days after the first application, prior to bloom. Johnsongrass 5” ✔ • 78.5 million in increased herbicide costs $ Lost $/A* from $340 $374 $408 I f more than 29 fl oz/A are used in any single application, see current label for $35 per acre on 1.6 million soybean acres Palmer amaranth • Liberty is rainfast in four hours. 1 2 additional use directions. May require sequential applications for control. $55 per acre on 0.4 million cotton acres Lost $/1,000 A* • 10 million in increased application costs $ $22,000 $24,200 $26,400 from waterhemp $5 per acre on 2 million acres Lost $/1,000 A* from • 49.35 million due to glyphosate-resistant $ $34,000 $37,400 $40,800 Palmer amaranth “ eople need to carefully evaluate their current programs P weed competition to see the selection pressure put on weeds and modify 30 percent of soybean acres at 17 percent loss *Based on a delay of 3-leaf stages resulting in a 6 percent loss of yield. Start yield at 50 bu/A. 15 percent of cotton acres at 25 percent loss their programs to increase the diversity of their management tactics.” A study conducted by the University of Nebraska5 -Bob Hartzler, Iowa State University determined that the critical period for weed removal in soybeans is based upon the soybean row spacing. For soybeans planted in 30-, 15-, and 7.5-inch rows, the critical removal time is V3, V2 and first trifoliate, respectively. Furthermore, 19 4,5,6,7 See page 36 for source information. 20