- Bhardwaj, Venkatesh and Omanwar, P.K. (1994). J. Indian Soc. Soil Sci. 42:387-392.
- Bhardwaj et al (1994). J. Indian Soc. Soil Sci. 42: 247-253.
- Jackson, M..L. (1973). Soil Chemical Analysis. Prentice Hall of India, New Del,hi.
- Naphade, KT. et al. (1995). J. Maharashtra Agric. Univ.20:255-257.
- Shelke et al. (1997). J. Maharashtra Agric. Univ. 22: 93-95.
- Suresh, S. et al. (1999). J. Indian Soc. Soil Sci. 47: 272-276.