Abstract
To study the effect of some plant extractions and vitamin C on bread wheat yield. Its components and other characters. Afield experiment was conducted during growing season of 2009-2010 at the Experimental Farm, Department of Field crop Science, College of Agriculture, University of Baghdad.Randomized complete block design with three replications was used in split plots arrangement, main plots included five cultivars of wheat (Mexipak, Abu-Graib-3, IPA 99, IPA 95 and Fatah) while subplot included vitamine C at concentration 1.5 mg.L¹, karkade at 50% and liquorices concentration at 25% in addition to control treatment which sprayed with distill water. Spraying with extractions and vitamin C was done twice, the first at tillering and the second booting stage.
The results indicated that IPA 99 cultivar was superior in total yield (9.6 ton.ha¹) due to its highest number of spikelets / spike (23.75), number of grains/spike(80 grain)and weight of 1000 grain, (38. 32 gm). Treatment with karkade extraction lead to significant increase in grain yield (10.32 ton.ha¹) due to the highest number of grains / spike(77.5 grain), number of spikelets/spike (22.07), spike length (13.11 cm), number of tillers.m²(239.7) and number of active tillers.m² (192.9 spike.m²).
The results indicated that IPA 99 cultivar was superior in total yield (9.6 ton.ha¹) due to its highest number of spikelets / spike (23.75), number of grains/spike(80 grain)and weight of 1000 grain, (38. 32 gm). Treatment with karkade extraction lead to significant increase in grain yield (10.32 ton.ha¹) due to the highest number of grains / spike(77.5 grain), number of spikelets/spike (22.07), spike length (13.11 cm), number of tillers.m²(239.7) and number of active tillers.m² (192.9 spike.m²).