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1. Reuse and Reclamation of PhosphogypsumPhosphogypsum (PG) is a byproduct of phosphate fertilizer production. It is produced when phosphate rock is treated with sulphuric acid during the manufacture of phosphoric acid, and is composed primarily of gypsum (CaSO4.2H2O). It is estimated that over 3 billion tonnes of PG have been accumulated in stacks worldwide and over 150 million tonnes are produced annually. In North America, PG is stockpiled in stacks that can cover hundreds... C. Nichol |
2. Interagency Cooperation to Improve Nitrogen Management for Water Quality ProtectionAgriculture and water are inseparable in a semiarid region such as Colorado. Adequate clean water supplies for drinking, agriculture, industry, and recreation are critical for the lifestyle Coloradans enjoy. The Agricultural Chemicals and Groundwater Protection Program (ACGPP) was created by the Colorado legislature in 1990. The purpose of this unique program is to reduce the potential impairment of groundwater by agricultural chemicals have on groundwater and the environment by preventing groundwater... T. Bauder, E. Wardle, R. Wawrzynski, K. Mauch |
3. Differences in How Late Season Soil Vs. Foliar Nitrogen Fertilizer Supplements Affects Riesling YanDuring the 2011 and 2012 growing seasons, 0, 15, or 30 lbs/A N was applied in split applications as either soil (simulated drip) or foliar applications to a commercial Riesling vineyard with a history of low vine N. Each treatment was replicated 4 times. To assess the impact of the supplemental N applications on vine vigor, shoot lengths were measured weekly and pruning weights collected during the dormant season (2012/2013 pruning not yet conducted). Fruit was harvested within 2 days of commercial... J. Davenport, M. Mccoy |