Investigating the yield of Iranian Castor Beans Varieties by Compound Variance Analysis Method

Castor bean Rininus Communis L. is one of the most important industrial plants in energy and medicine. In order to study the density and sulfur fertilizer effects on yield and yield components of four Iranian castor beans varieties for biofuel and medicine production an experiment was conducted in 2009 and 2010 in Eizeh city Farm. The experimental design was split split-plot based on randomized complete block with 3 replications. The Studied factors included four castor beans varieties as main plots (Taj bakhsh, Ebrahim, Mousavie and Ghobadian) and three planting distance on row as sub plots (50, 60 and 70 cm) and three levels of sulphor as sub-sub plots (0, 75 and 150kg net S per hectare). The results showed that traits such as grain yield and yield components were affected by experimental factors and they were different. According to the results of this experiment, the highest and the lowest grain yields were obtained from Mousavie (11735.28 kg/ha) and Ghobadian (7172.08 kg/ha) genotypes, 70 cm (10209.1 kg/ha) and 50 cm (8126.83 kg/ha) distance and 150kg (9868.38 kg/ha) and 0kg (7950.63 kg/ha) net S per hectare respectively.