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36 SEEDWORLD.COM JUNE 2015 There are currently 457 unique cases of herbicide resistant weeds globally with 246 species. Weeds have evolved resistance to 22 of the 25 known herbicide sites of action and to 157 different herbicides. Source International Survey of Herbicide Resistant Weeds. FAST FACTBrommer says farmers can spend less time worrying about weed control and that means more bushels and more bales of cotton at the end of the year. Although a new product the com- pany has a long history of marketing dicamba products including Status and Clarity. BASF has a 50 year history of using dicamba Status was sprayed on more than 10 million acres of corn in 2013. We have a good track record so far Brommer notes. Bill Johnson a weed scientist with Purdue University says considering the sizeable investments these companies made theres a lot for them to lose by not stewarding them properly. Certainly theyve proceeded down the registration process very carefully he says. Ive seen demonstrations with these new formulations that give me a great deal of confidence that the her- bicides are much less likely to move on their own of course it still depends on applicators making good decisions. What Can Growers Expect A select group of farmers who also own livestock will grow Enlist corn as part of a stewarded introduction in 2015. Kalthoff explains that Dow AgroSciences has outlined the protocols the growers must follow. Participating farmers are required to follow strict stewardship procedures. The program requires that Enlist corn be fed on farm. Farmers growing Enlist corn commit that it will not enter the grain channel he says. Just where that corn is grown geo- graphically also depends on state regis- trations for Enlist Duo. In October 2014 the EPA registered the herbicide for use in Iowa Illinois Indiana Ohio South Dakota and Wisconsin. The agency is considering an expansion of registration to ten additional states. Production of Enlist soybeans this year through the companys Field Forward program will be solely for seed. Kalthoff says growers will be chosen to participate based on their interest in the technology and willing- ness to abide by stewardship guidelines. Farmers participating in the stew- arded activities for the Enlist system in 2015 will be back in control of resist- ant weeds and yield Kalthoff says. Growers will plant Enlist corn or soy- beans and spray their fields with Enlist Duo herbicide while also using a pro- gram approach. Enlist Duo will control the toughest weed species in a long application window helping to maxi- mize yield. Jordan Iverson cotton traits mar- keting manager for Monsanto says they estimate customers of Deltapine and their licensee cotton brands will plant more than half a million acres of Bollgard II XtendFlex varieties this year across a majority of the cotton growing states. Were going to work very closely with our distribution partners and growers on proper variety placement and management recommendations to help them maximize yield potential and fiber quality he says. Were also committed to educating growers on the added value of both glyphosate and glufosinate tolerance for 2015 as well as helping to ensure understanding that dicamba is not approved for over-the- top use in 2015. Unlike other crops the new cotton will not need to be segregated upon harvest. Bollgard II XtendFlex has been approved for export to Australia Mexico Canada and Japan. Other export markets are anticipated to follow. Participating farmers are required to follow strict stewardship procedures. Farmers growing Enlist corn commit that it will not enter the grain channel. John Kalthoff