Wheat productivity at various N-levels and future predictions under changing climate

  • Nitrogen (N) application to agricultural land has increased
    steeply in recent decades.


  • Pakistan was among the top four in terms of N use but had low
    mean yields, with the lowest NUE and highest N surplus.


  • During 1961–2014 in Pakistan, N fertilizer use, and N surplus
    grew at a much faster pace than mean yields; however, nitrogen
    use efficiency (NUE) continued to decline.