Hello Geetha,

Colleges offering Ph.D in Agricultural Microbiology are listed below.

University of Agricultural Sciences, Bangalore

Indira Gandhi Krishi Vishwavidyalaya College of Doctoral Degree Programme, Raipur, Chhattisgarh

Faculty of Agriculture, Kerala Agricultural University

Aligarh Muslim University, Aligarh

Bansilal Amrutlal College of Agriculture, Anand

College of Agriculture, Thiruvananthapuram

I hope this information was helpful to you.

Good Luck!!