Mahmood-Ul-Hassan, Riaz Ahmad and Muhammad Saqib
It has been an increasing global interest in adopting new agro-management techniques in crop production to attain improved agro-physiological crop response and resource economization. A field study for two consecutive years was carried out on sandy clay loam soil to ascertain the productivity of Zeamays L. (maize) hybrid with having three irrigation methods viz. irrigation to flat sowing, irrigation to all ridges and irrigation to alternate ridges and four nitrogen application timing viz. control, ½ N at sowing and ½ at Ist irrigation, ½ N at sowing and ½ at 45 days after sowing (DAS) and 1/3 N at sowing + 1/3 at Is t irrigation and 1/3 at 45 DAS. Results of both years revealed that irrigation to all ridges exhibited significantly highest grain yield and yield attributes along with more leaf area index (LAI), dry matter accumulation (TDM), crop growth rate (CGR) and nitrogen and water use efficiencies (WUE and NUE). Three equal splits of nitrogen application resulted in highest grain yield and yield parameters accompanied with maximum LAI, TDM, CGR, WUE and NUE. The results suggested that irrigation to all ridges and applying nitrogen in three equal splits to ridge sowing maize hybrid proved the superior option for maximizing productivity and resource utilization.
Maize Hybrid, NUE, WUE, Grain Yield