Department of Agronomy, Jawaharlal Nehru Krishi Vishva Vidyalaya, Jabalpur (M. P.), India.
1 National Research Centre for Weed Science, Jabalpur (M. P.), India.
Tillage operations significantly influenced the vertical distribution of winter weeds in the wheat field. Significantly higher number of seeds of Avena ludoviciana, Medicago hispida and Chenopodium album was recorded in the upper 0–5 cm layer under zero tillage treatments than conventional and deep tillage. But athigher depths of 5–10 and, 10–15 cm, the number of seeds of A. ludoviciana was significantly higher underdeeptillage followed by conventional and zerotillage. Continuoususe of clodinafop fb 2, 4-D and isoproturon+2, 4-D for control of weeds in wheat field significantly reduced the number of weed seeds over weedy check.
