Nitrogen (N) is one of the most essential nutrients needed to reach maximum grain yield in all environments. Nitrogen fertilizers\nrepresent an important production cost, in both monetary and environmental terms.The aim of this study was to assess the effect\nof preplant nitrogen (N) rate and topdress N source on spring wheat (Triticum aestivum L.) grain yield and quality. Study was\nconducted in North-Central andWesternMontana from2011 to 2013 (total of 6 site-years). Six different preplant nitrogen (N) rates\n(0, 220, 22, 44, 67, and 90 N rate, kg haâË?â??1) followed by two topdress N sources (urea, 46-0-0, and urea ammonium nitrate (UAN),\n32-0-0) were applied to spring wheat (Triticum aestivum L.). The results showed that there were no significant differences in grain\nyield, protein content, or protein yield, associated with topdress N source.
Loading....