OCTOBER 7, 2013
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Features
This map shows the Pipestone Creek watershed boundary and the location of the three farms that are cooperating in the studies. Farms M & B are involved in the pasture studies and Farm F in the cropland study. croplands, too, cropland farmers find managing around these seasonal potholes too time-consuming, as well as creating other potential weedy issues later in the season. In many cases, seasonal potholes have already been drained on croplands.” Another management strategy under study on pasture is infield winter bale grazing. Leaving the bales out on the pasture with the cattle is considered beneficial. The cattle would only be brought in if there is extreme weather. There are some savings: bales don’t have to be hauled in, manure does not have to be spread out of corrals after winter and cattle are healthier, not having been clustered together all winter. “In this case, we are really comparing nutrient run-off in the infield grazing situation to the situation where manure is spread in the fall against a summer-grazed pasture,” explains Dr. Cade-Menun. “In both cases — bale-grazing and manure-spreading — we see increased nutrient run-off versus a summer-grazed pasture. Although we have more work to do, we can say that farmers have to be careful where they graze cattle and where they spread manure. If the run-off stays on the land, the pastures will benefit from the nutrients in the runoff. If the run-off is likely to contaminate a domestic water source, a river, stream or lake, then that’s obviously not a good scenario.”
Snow melt water collecting in depressions in crop land.
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CROPLAND MANAGEMENT Turning to croplands, the team is looking at two management strategies. The first is a nutrient reduction strategy that has farmers getting fertilizer recommendations based on soil tests. “Instead of applying all this fertilizer at once, we are having the farmer reduce the recommended amount by one-third,” says Dr. Cade-Menun. “If the crop progresses well and conditions are favourable, a top-dressing can be applied in-crop. However, we haven’t needed to do that yet, mostly due to the weather conditions of the past few years.” The results of this trial are just being analyzed now as the site was not seeded in 2011 due to flooding. “This is a good example of why multi-year experiments are so nec-
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Jon MontgoMery
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2010 Olympic Gold Medalist – Skeleton 2008 World Championship Silver Medalist BrettYoung is a trademark of BrettYoung seeds Limited. lways follow grain marketing and all other stewardship genuity® and roundup ready® are registered trademarks and used under license from Monsanto Company. always practices and pesticide label directions. Details of these requirements can be found in the trait stewardship responsibilities notice to farmers printed in this publication. 13022 09.13
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