Abstract
Cultivation of calcareous soil is a major challenge as results to its properties including low moisture content, high filtration rate, weak soil structure, low soil content of organic matter and loss of nitrogen fertilizers. This study was conducted in research station at agriculture faculty in 2015/2016;0 calcareous soils to study the effect of calcium carbonate on the germination and growth of the Lathyrus sataivus L. The seeds were grown at different concentration of calcium carbonate (0, 2.5, 5, 10, 20, and 30 %). In this experiment, the CRD was used with three replicates. The results showed that the percentage of germination, germination rate, number of leaves and flowers and dry weight of the plant did not decrease significantly unless the concentration of calcium carbonate was higher than 10%. These results may be a positive indicator of the possibility of planting the Lathyrus sataivus L. in the soils, which do not exceed the level of dissolved carbonate about 10%.