M. Jamil1*, S. S. Hussain1, M. A. Qureshi3*, S. M. Mehdi2, M.Q. Nawaz1 and Q. Javed1
1Soil Salinity Research Institute, Pindi Bhattian;
2Soil Fertility Research Institute, Lahore
3Soil Bacteriology Section, Agri. Biotech. Research Institute, AARI Faisalabad.