Relationship between the elements in plant Galium verum and soil characteristics (Case example: Martyrs Valley, West Azarbaijan province)

The relationship between vegetation and soil of the semi-arid areas in management and planning, especially when the goal is to reform, regenerate and protect the soil cover. For this purpose, a study of pasture species Galium verum in phenological phases in three different soils in the valley of the martyrs was carried out in 2011. Plant and soil samples from an area in the north with three types of soil with three replicates were randomly collected systematically. Average of data using variance analysis and Duncan test, and correlation between soil and plants through a single linear regression was performed using SPSS by Stepwise method. Factors measured in soil samples included: Saturation, Organic carbon, N, P, K, Ca, pH, EC, Lime, Clay, Sand, Silt and elements in plant samples were (P, K, Ca, N, DM). The results showed a correlation between soil factors and plant So that the different phenological stages, phosphorus plant lime, sand, clay, silt and soil saturation were sensitive and the reduction of silt, clay and soil saturation, and the lime and sand reduced the phosphorus plant. In the active growth phase, reduction of silt and soil saturation and increasing the lime and sand reduced nitrogen in plants and decreased sensitivity in flowering phase. Therefore, the only effective agent in reducing the nitrogen plant is reducing the silt. The highest seed yield factor influencing plant nitrogen-phosphorus soils is So that the reduction of nitrogen and phosphorus on plant-soil interactions. Therefore it is concluded that different plants react differently to changes in soil properties and can be represented as a habitat for forage quality.