Muhammad Waseem

Effect of diverse use of nitrogen sources on grain yield, harvest index, nitrogen-use efficiency and phenological development of hybrid maize ( Zea mays L.)

-1 , S 1: Urea (50%) + poultry manure (50%), S 2: Urea (50%) + farm yard manure (50%), S3: Urea (50%) + pressmud of sugarcane manure (50%), S 4: Urea (50%) + compost (50%), S 5: Urea (50%) + (poultry manure + farmyard manure + pressmud of sugarcane + Compost) 50%. Significant results of grain yield (t ha -1 ), harvest index (%), nitrogen use efficiency (%), number of days taken to tassel, number of days taken to silk, and number of days taken to mature was obtained. Conclusively, hybrid maize H 1 (Pioneer 30Y87) performed best during 2008 as compared to 2009 at nitrogen sources S 1: Urea (50%) + poultry manure (50%). Overall, it was concluded that hybrid maize H 1 (Pioneer - 30Y87) produced better grain yield (6.14 t ha -1 ) during 2008 when nitrogen sources S 1: Urea (50%) + Poultry manure (50%), was applied in combination as compared to grain yield (6.0 t ha -1 ) in hybrid H 2 (Pioneer - 31R88) during 2009. Growth and quality attributes also performed better in 2008 as compared to 2009 at nitrogen sources S 1: Urea (50%) + poultry manure (50%).

Consequences of diverse use of nitrogen sources on grain yield, grain quality and growth attributes of hybrid maize (Zea mays L.)

A two year field experiment was conducted to check the consequences of diverse use of nitrogen sources on grain yield, grain quality and growth attributes of hybrid maize ( Zea mays L.) at the Agronomic Research Area, University of Agriculture, Faisalabad during Autumn 2008 and 2009. Experiments were laid out in a randomized complete block design with factorial arrangement comprising 3 replications with a net plot size of 3 × 5 m. Treatment comprised two hybrids: that is, H 1 (Pioneer-30Y87) and H 2 (Pioneer-31R88) with combination of six nitrogen sources S0 : Control (0) kg N ha -1 , S1: Urea (50%) + Poultry manure (50%), S2: Urea (50%) + Farm Yard Manure (50%) , S3: Urea (50%) + Pressmud of sugarcane manure (50%), S4: Urea (50%) + Compost (50%), S5: Urea (50%) + (PM+FYM+PMS+ Compost) 50% . Results of grain yield (t ha -1 ), grain protein content (%) grain oil content (%), leaf area index, leaf area duration, dry matter accumulation, crop growth rate and net assimilation rate was found to be significant during 2008 and 2009. It was concluded that hybrid maize H 1 (Pioneer - 30Y87) produced better grain yield (6.14 t ha -1 ) during 2008 when nitrogen sources S1: Urea (50%) + Poultry manure (50%) was applied in combination as compared to grain yield (6.0 t ha-1) in hybrid H2 (Pioneer -31R88) during 2009. Growth and quality attributes also performed better in 2008 as compared to 2009 at nitrogen sources S1: Urea (50%) + Poultry manure (50%). Key words : Nitrogen sources, hybrid maize, yield, growth, quality.