The contribution of nitrogen fertilizer timing and placement in reducing the growth and seed production of ryegrass (Lolium rigidum Gaudin) in competition with wheat (Triticum aestivum L.)

This study determines the effect of N fertilizer placement, N fertiliser rate and N application timing on the competitive ability of wheat (Triticum aestivum L.) in dryland no-tillage cropping system in the Western Australian grainbelt.