The Effect of Phosphorus Fertilizer Applications on Some Characters Related to Seed Yield and Quality in Narbon Vetch (Vicia narbonensis L.) Lines in Ankara Ecological Conditions

The research was conducted at the study plots of Department of Field Crops, Faculty of Agriculture, Ankara University, in arid conditions representing the Central Anatolia, in Ankara, in years 2010 and 2011. The does of the phosphorus fertilizer that generates the highest grain yield per unit was investigated on Lebanese-origin H1; 5143, Turkish-origin H2; 5526, and Iraqi-origin H3; 5538 vetch lines that were obtained from ICARDA. Four doses of phosphorus, corresponding to P2O5, and including Pk; 0 kg/da, P1; 4 kg/da, P2; 8 kg/da, and P3; 16 kg/da were used in Triple Super Phosphate form on three repetitive narbonvetch lines that were structured as randomly split parcels. In the study, positive effects were observed on plant height (62.53-77.88 cm), main stem thickness ( 4.90-5.91 mm), thousand grain weight (77.39-114.03 g), biological yield (359.11-397.43 kg/da), harvest index (% 36.21-48.89), grain yield ( 123.41-217.37 kg/da), number of pods per plant ( 11.37 to 15.30 pieces/plant ) at 4 kg/da P2O5 and 8 kg/daP2O5 phosphor doses. On the other side, adverse effects were detected on the number of stems per plant (2.12-2.99 unit/plant), the number of seeds per pod (3.59-3.71), germination rate of seeds (91.17-86.33 %), phosphor ratio of seed (0.29 to 0.37 %) and crude protein content in grain (25.00-25.30 % ) at levels more than16 kg/da. In the study, 4 kg/daP2O5and 8 kg/da P2O5fertilizer doses gave the best results while the amounts over 8 kg/da were not considered statistically significant.