b'for use in Enlist E3 soybeans. The three companies anticipatesoybean cyst nematode, Tylka says he expects SCN to continue commercialization of Enlist E3 soybean varieties containingto cause tremendous soybean yield loss throughout North the NRS trait in the late 2020s, pending applicable regulatoryAmerica. reviews and completion of field testing. Thats because SCN populations throughout the U.S. and Our nematode resistant soybean trait will be the first com- Canada will continue to build up the ability to reproduce on mercially available biotechnology trait developed to controlsoybean varieties with the PI88788 source of resistance genes, nematodes, says Linda Trolinder, senior vice president of BASFwhich is in about 95% of all SCN-resistant varieties in the U.S. Seeds and Traits R&D. BASF is in its 5th year of advanced fieldI also expect more nematode-protectant seed treatments to testing the NRS trait in the U.S. and in our trials, it has demon- appear on the market. Nematode-protectant seed treatments strated an average 8% yield benefit above todays SCN-resistantwill somewhat dampen SCN yield loss on soybean varieties with varieties. PI88788 SCN resistance, but nowhere near enough to com-The Enlist weed control system is an industry-leading systempletely offset the yield loss caused by SCN on soybean varieties for soybeans, corn and cotton. Enlist E3 soybeans are tolerantwith PI88788 SCN resistance.to 2,4-D choline, glyphosate and glufosinate herbicides, givingKaiser concurs and says we can expect to see the rise in SCN farmers additional options to manage resistant and hard-to- continue, but by taking both hard-wired resistance and layer-control weeds.ing additional seed treatment protection, growers will be able to Farmers have embraced the Enlist E3 soybean trait, whichmaximize their genetic potential. offers maximum flexibility among the industrys various weed- As the dollar per bushel goes up, the economic threshold control systems, adds Tim Glenn, executive vice president, Seedis lowered. Therefore, weve found the ROI of the additional Business Unit, Corteva Agriscience.on-seed nematode protection can be in excess of 3:1 in high-The addition of the NRS trait to Enlist E3 soybeans is apressure situations. logical next step for Corteva. Offering both trait technologiesAdds Mullock, SCN will continue to be a major threat to together will provide soybean farmers with additional functional- soybean yields and it is important that an integrated approach to ity for pest management. managing this pest is started now and continues. SCN popula-tions can be managed with the available tools, including native The Near Future traits, seed treatment, crop rotations, and new trait innovations, As for what the next three to five years holds in the fight againstto maintain high soybean yields.SW14/ SEEDWORLD.COMSEPTEMBER 2022'