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1. Long-Term Effects of a Large Composted Cattle Manure Application Followed by Cover Crops to Organic Dryland Winter Wheat Cropping SystemsOrganic agriculture in semi-arid environments can face several challenges in order to produce a successful crop. These include nitrogen and phosphorus deficiencies, moisture limitations, and high weed competition. Organic winter wheat (Triticum aestivum, L.)-fallow systems can be amended with composted cattle manure and with green manure from cover crops grown in the fallow phase to help increase wheat yields and quality. Cattle manure can improve soil health with the... C. Helseth, U. Norton |
2. Cover Crops in Certified Organic, Specialty Crop Food ProductionThere is a growing interest in certified organic, specialty crop food production. With a larger population demanding organic products and organic products offering a higher premium for the producer, farmers are exploring the transition to organic farming. Organic producers in southeastern Wyoming face multiple challenges in environments with high elevation, low precipitation, and have a short growing season. These challenges include management of persistent weeds, maintaining biodiversity, and... E. Moore, U. Norton |
3. Dramatic Soil Health Changes After 18 Years of Different Nitrogen Rates and Cropping Systems in the Northern Great PlainsRelatively few long-term cropping and nitrogen rates studies have been conducted in the semi-arid northern Great Plains that assess soil health changes. A cropping system study was initiated in 2002 in Bozeman, Montana (~400 mm annual precipitation) with wheat grown in even years, and either tilled fallow or one of the following no-till systems in odd years: fallow, wheat, pea grain, pea hay, pea green manure, and an alfalfa-grass (until 2012) followed by pea grain. N was applied at either 50%... C. Jones, P. Miller, C. Zabinski, W. Fouts |
4. Winter Wheat Response to Enchanced Efficiency Fertilizers in the Canadian PrairiesOptimal nitrogen (N) management can improve agronomic efficiency, and increase winter wheat (Triticum aestivum L.) grain yield and protein content. Two experiments were conducted to measure the responses of winter wheat to enhanced efficiency N fertilizers and timing/placements across the Canadian Prairies. Experiment 1 consisted of uncoated urea, urea+nitrification inhibitor (urea+eNtrench®), urea+urease and nitrification inhibitors (SuperU®), and polymer-coated urea (Environmentally... Z. Wang, J. Owens, X. Hao, L. Hall, K. Coles, C. Holzapfel, E. Rahmani, R. Karimi dehkordi, B. Beres |
