Effect of Bacteria Inoculation and Iron Application Rates on Nodulation and Yield of Different Peanut Varieties

This research was carried out two consecutive years in Adana-Ceyhan province at Cukurova Region to determine the effect of bacteria inoculation and iron applications on nodulation and yield of different peanut varieties. NC-7, Halisbey, Arıoglu 2003, Osmaniye 2005 varieties were used as first crop. Three different iron rates of Fe2SO4 (Fe0, Fe1: 50, Fe2: 100 kg ha-1) were applied and two bacteria treatment (B0: without inoculation, B1: Bradyrhizobium leguminosarum-380 inoculated) were used in the experiments. Root, shoot and nodule sampling were done during the flowering stage of first crop peanut whereas root, shoot samplings and yield determination were done during harvest. In both years results showed that nodule formation did not occur in the plants. Therefore, no significant effects were observed in N contents of nodulation, biomass, and various plant parts due to bacteria inoculation, either. In terms of iron application, however, different effects were found in the parameters evaluated, depending on flowering stage, harvest time, and the pistachio variety used in the study. Differences were observed in the parameters of interest depending on the variety. Halisbey variety had the highest yield (6940 kg ha-1), followed by Osmaniye 2005 (6860 kg ha-1) and Arıoğlu 2003 (6440 kg ha-1) in the first year of the experiments whereas yield varied in the range of 7000-7210 kg ha-1 in all three varieties in the second year while NC-7 had a yield of 4570 kg ha-1 in the first year and 4580 kg ha-1 in the second year.