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1. Analysis of 10 Years of N Rate and Timing Work in Oklahoma Winter WheatThis study was conducted to determine optimum top-dress nitrogen fertilizer rate by location and environment so it may be reproduced in following years. Winter wheat was planted in different locations each year starting in 2009. Each location had a treatment structure consisting of Preplant nitrogen rates ranging from 28.02kg/ac to 224.17kg/ac and top-dress nitrogen rates ranging from 28.02kg/ac to 140.11kg/ac. When top-dressing occurred there was two plots that had sensor based rates that used... S.G. Akin, B. Arnall |
2. Investigating Adsorption Capacities of Treated Sewage Byproducts for Their Potential Use As FertilizerAs the global population rapidly grows, food producers of the world are faced with the task of feeding as many as ten billion people by 2050. The current state of fertilizer use cannot support this growth, and the overuse and poor management of fertilizers has degraded soil, water, and air quality over time. The average recovery efficiency of nitrogen by crops is low, only 50% due to the fast dispersion/loss of applied fertilizers to the environment. This leaching of fertilizer often leads to... K. Coyle, L. Slaughter, C. Alvarez-pugliese, G.G. Botte, M. Siebecker |