1. Department of Agricultural Chemistry and Soil Science, C.C.R.(PG) College, MZN, India
2. Department of Soil Science and Agricultural Chemistry, IAS, BHU,Varanasi, India
3. Department of Soil Science and Agricultural Chemistry, Sri Karan Narendra Agriculture University, Jobner-Jaipur, India
4. SMS, KVK Sonepur, OUAT, Sonepur, India
5. Department of Soil Science and Agricultural Chemistry, Narain College, Shikohabad, India