The effect of post-emergence weed control on irrigated wheat (Triticum aestivum L.) in the Sudan savannah of Nigeria

Four post-emergence weed control treatments (piperophos+cinosulfuron, ozadiazon+propanil, 2, 4-D, bentazon+propanil) at various doses were evaluated during the 3 dry seasons of 1999/2000, 2000/2001 and 2001/2002, at Kadawa in the Sudan savannah of Nigeria. These treatments consistently suppressed weed weights compared with the untreated plots. Two hoe weedings or the post-emergence application of 2, 4-D at 1.2 kg a.i/ha and oxadiazon plus propanil mixture at 2.0 kg a.i./ha, gave the best results and could be adopted for wheat production in Nigeria, especially as post-emergence hoe weeding is impractical in irrigated wheat.