اثر برهمكنش علف هاي هرز و نيتروژن بر رشد وعملكرد گندم ديم (TRITICUM AESTIVUM L) و كربن آلي خاك

Effect ofAzospiritlum and Azotobacter inoculation along with Microclcrncnts (as Foliar and through Soil application) on qualitative and Quantitative Traits of Four Wheat Cultivars Following corn plantation in Fars province

Azospirillum lind Azotobacter are two molecular nitrogen fixing microorganisms which, in symbiosis with the roots of cereals and other graminae, enhance growth and development of the plant. In this research five bread wheat cultlvara were treated with Azospiri/lum , Azotobacter as well as with microelement application by using split-split plots (on the basis of a orandomized complete block design) with three replications in Shiraz region during 2004-2005. Main plots consisted of two methods of microelement application (through either soil or foliar application) . Subplots included application or non application of Azospirillum and Azotobaʹter. while sub-sub plots werc consisted of five cultivars (Darab-Z, Star, Shirez, Pishtaz andChamran]. Measurements were made of plant height .grain yield, yield components, biological yield, harvest index and grain protein percent The results showed thatsoilandfoliar application of microelements only increased the number of spike per m2 and 1000·kemel weight, respectively. Inoculation of seeds with Azospirilbsm and Azoloba,ter bacteria increased IOOO~kemel weight and grain protein perceutage. A study of cultivars also indieoted that Chamran and Starcultivars were superior in quantitative and qualitative traits, respectively. In general, it appeared that Chamran and Darab-2 are the best cultivars for planting after corn insuch areas. Azospirillum andAzotobaʹter inoculation was more effective on qualitative than on quatitative traits. Any of the two application methods of microclements (with respect to conditions) eanberecemmended in this and similar areas.