عنوان مقاله [English]
This study was conducted for investigation of the effect of three between plant 20, 25 and 30 cm on
60 cm fixed rows and early ripeing three cultivars Zaria,Azargol and Chemianca on different triat including yield and yield components in Sunflower after Barty harvasting in Miyaneh region during 2003. A fectorial experiment with randomized complet block design and 3 replication was used. In this study some of vegitative and reproductive stages, morphologyeal charactristics, dry wieght various organs, yield and yield components and harvest index was evaluated. On the obtained results, there was no significant difTerencc between plant densities in phenologycal stages,yicld components and must of evaluated traits except I 00 grain weight and grain yield. Also there was no significant difference between planted cultivars the must evaluated triats except shrub length and husk to seed portion.ln this experiment diffrcnce of interaction of density and cultivars with studied trait wasn't significant except dry wight to second sampling.The must dry wieght was obtained in the 83000 plant/ha tretment with Zaria and the
55000 plant/ha tretrnent whit Chemianca was the least dry wieght. Finaly, considering with experimented conditions in this study the density of 63000 plant/ha with Azargol for double cropping of sunflower is suitable for Miyaneh region.