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Don't under-fertilize winter canolaOklahoma Oklahoma winter canola producers are reminded there is a tendency to under-fertilize their crop for needed sulfur and potassium to obtain top yields this spring. Gene Neuens, Producerrs Cooperative Oil Mill field representative and Plains Oilseed Products cooperative executive director, reminds growers sulfur demands of the crop can be satisfied with dry ammonium sulfate in the 21-0-0-24S level or 12-0-0-26S liquid ammonium thiosulfate as sources of sulfur. Potassium demands for winter canola scheduled fall preplant 0-0-60 for spring potassium needs. Liquid suspensions or dry may be applied in top-dress timing, Neuens said. And foliar potassium can be used just pprior to "bolting," (when the winter canola plant begins its spring growth spurt) and when there is a good canopy in the crop. Oklahoma farmers planted 85,000 acres of winter canola for the 2010 crop, Neuens said. With plenty of ground moisture to help the crop grow, proper fertilization is an important task that will help the farmers get top yields, Neuens said.
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