Abstract

Field experiments were conducted to evaluate six sunflower
genotypes (Kopan, Shomos, Aqmar, Iraqi flower, Flamme, and Uroflor)
and seven planting dates ( 15 February to 15 August at monthly intervals)
at four locations ( Kut-Ahrar. Kut-Center, Diwaniyah- Daghara and Hilla-
Hashimiyah) for growing seasons of 2007 and 2008 to evaluate the effects of
planting dates on sunflower genotypes. A split plot in randomized complete
block design with 3 replications was used. The planting dates were allocated
to the main plot and genotypes to the subplots. The results showed that the
effect of years, locations, planting dates, genotypes and the two and three
ways interactions were significant. The Kut-Ahrar was the best location for
seed yield and produces 2.100 t ha-1. The planting date at 15 February was
highest in seed number (1259 seed/disc) and seed yield (2.718 t ha-1).The
planting dates at 15 August produce higher 1000 seed weight. The genotype
Shomos was higher for seed yield.