A field experiment was carried out to investigate the impact of timing of nitrogen (N) application on yield, yield attributes (earbearing tillers, spikelets/spike, grains/spike, 1000 grain weigh, plant height and grain weight/plant) and protein content of semidwarf wheat cultivars. There were four wheat cultivars viz. Aghrani, Akhar, Barkat and Kanchan and five patterns and five patterns of N application (all of N at sowing; 1/2 of N each at sowing and early tillering; 1/3 of N each at sowing, early tillering and late tillering; 1/4 of N each at sowing, early tillering, late tillering and panicle initiation; 1/5 of N each at sowing, early tillering, late tillering, panicle initiation and flowering). Nitrogen was applied as urea @ 120 kg N/ha. Both the wheat cultivars and timing of N application produced significant effect on grain yield without effects on straw yield and protein content. Grains/spike, 1000 grain weight, plant height and grain yield/plant were influenced by cultivars but earbearing tillers and spikelets/spike were not significant. Earbearing tillers and plant height were influenced by timing of N application but other yield attributes were not affected. The interaction effect of cultivars and timing of N application on grain yield was significant but on other yield attributes and protein content was not significant. The N application in three splits produced the best grain yield of semidwarf wheat cultivars.
|Journal||Pakistan Journal of Scientific and Industrial Research. Series A: Physical Sciences|
|Publication status||Published - 1993|