WHEAT PRODUCTIVITY WITH INCORPORATION OF MAIZE RESIDUE AND INORGANIC NITROGEN FERTILIZER
Department of Agronomy, University of Agriculture, Faisalabad, Pakistan
Keywords:maize-wheat, net returns, nitrogen fertilizer, residue incorporation, wheat yield
Wheat is an important cereal crop feeding human and livestock as well. Stagnant wheat yield has been observed over the time in maize-wheat intensive cereal rotation in Pakistan. Maize residue management might be a good choice over conventional burning/cutting practice. The present research was performed at Agronomic Research Area, University of Agriculture, Faisalabad to determine the most favorable residue incorporation level with the best nitrogen splitting level. The experimental treatments comprised of maize residue incorporation viz; control, lower 1/3, 2/3 and full maize plant incorporation along with nitrogen (N) fertilizer rates viz; 100 kg N ha-1 in 2 splits, 150 kg N ha-1 in two splits and 150 N kg ha-1 as basal dose. The experiment was laid-out in RCBD with split plot arrangement replicated thrice having net plot size of 1.8 m × 5 m. Data pertaining to growth and yield attributes of wheat were recorded following standard procedures. Response of wheat and its yield components like productive tillers (287.44 m-2), 1000-grain weight (43.72 g) differed significantly under maize plant incorporation strategies compared to conventional cutting practice. Full plant incorporation along with 100 kg N ha-1 in 2 splits performed superior regarding final grain yield. However, maximum net returns (Rs. 83706 ha-1) and benefit cost ratio (BCR) (1.72) was obtained in lower 1/3 plant incorporation at 100 kg N ha-1 in two splits. Hence, the farmers may adopt this strategy to enhance the productivity and profitability of wheat in mix cropping zone of Punjab.