To: Dan Spillane who wrote (1156 ) 2/12/1999 9:46:00 AM From: Anthony Wong Read Replies (1) | Respond to of 2539
Roundup Ready corn: How fast will it fly? More hybrids and the option of multiple applications could boost acres dramatically By Mike Holmberg Business Editor Questions? Comments? E-mail the author at mholmberg@mdp.com After the first year of commercial use, it seems obvious that Roundup Ready corn will fly. The question now is how high and how fast. DeKalb was the only seed company to offer hybrids with the Roundup Ready trait last year. DeKalb now has competition in the Roundup Ready corn business – but not from Pioneer. This year there will be new suppliers, several new Roundup Ready hybrids, and the option of applying up to 64 ounces of Roundup to a crop. DeKalb will have the Roundup Ready trait in three hybrids with new, elite genetics. The other 14 DeKalb hybrids are existing products that had Roundup Ready added to the genetic package. Monsanto recommends three different weed management systems with Roundup Ready corn. One option is use of a residual herbicide followed by a postemergence application of Roundup Ultra. A second choice is use of a residual herbicide with the post-emergence application of Roundup. And the third option is two postemergence applications of Roundup. Watching the genetics Brad Karlen, Reliance, South Dakota, planted about 1,400 acres of DK493RR last year but would have preferred to have the trait in DK477. He's studying the university test plots before making plans for this year. On most of those acres, he used Roundup alone. Karlen used atrazine down on fields where he had manure coming out of the feedlot and knew he had more weed pressure. Karlen says the atrazine took the early weeds out so he didn't need to be in spraying the Roundup as quickly in those fields. “Overall it was a bit cheaper, and we were getting better weed control,” Karlen says. He also raises Roundup Ready soybeans, and doesn't want to rely on the same herbicide for both. In the long run, he expects to stick with more Roundup Ready beans than corn. Careful with kochia C.J. Farms planted almost 3,000 acres of Roundup Ready corn near Oxford, Nebraska, says Clyde Lueking. Some followed corn, and the rest was planted in ecofallow treated with atrazine the previous summer. Lueking says they used a Roundup burndown at planting, then followed with 24–32 ounces of Roundup when the corn was 20–24 inches tall on about two-thirds of these fields. They tankmixed 4 ounces of Banvel on the other third to help control triazine-resistant kochia, their worst weed. With the option of a second Roundup application, Lueking says they will skip the burndown this year. The Roundup Ready corn was all planted on dryland fields at 18,000 seeds per acre. That spread the technology fee over 4.44 acres. Lueking says they are not as demanding in hybrid selection for dryland fields as for those being irrigated. He thinks the selection may be better suited for irrigated corn this year. agriculture.com