Influence of Planting Date and Kinetin Concentration on Thermal Accumulation and Some Growth Trails in Barley

Abstract A field experiment was carried out in Alsufia - Al-Ramadi city Al-Anbar governorate Republic of Iraq at winter season 2020-2021 on sandy loam soil. The included 12 treatment resulted from the combination planting date Oct25, Nov10, Nov25 and Dec10 ( main plots) kinetin concentration 0,30 60 mg L -1 sub plots ) using RCBD with split plot arrangement three replications. results revealed that plants first recorded 91 days until booting stage reduced gradually to fourth date. First score highest thermal accumulation 1876 C declined lowest value third (1389) C. Fourth gave CGR (0.127) g day NAR (0.00028) cm -2 . 30 surpass significantly, but have significant effect NAR.