Binish T*
Diazotrophs has been shown to enhance the moisture holding capacity of the soil and reduce environmental pollution. Application of diazotrophs (Oscillatoria and Azolla pinata) to the soil bed promoted the growth of beneficial microbes and secretion of soil conducting substances by these microbes. It enhanced the early growth and yield attribute properties in legume plants like Cyamopsis tetragonoloba. A report showed that treatment of (500g/Kg) diazotrophs increase soil nutrients than the control. Potassium was decreased 50% when the soil treated with500mg/Kg Oscillatoria species respectively over control. The increment of nitrogen was 20%, when the plants treated with Anabeana azollae (Azolla pinnata) 500mg/Kg soil, respectively over control.