1990 TILAK, Kolluru V.B.R. (b. 1941) PhD,FNAAS,FNABS,FAPASc,FBS,FAMI, Former NASI Senior Scientist, Department of Botany, Osmania University, Hyderabad – 500007; Res. D-111 & 112, May Flower Park, Mallapur, Nacharam, Hyderabad – 500076; Tel: (040) 27173715(R), 09885023138(M); Email: ; ; Sp. Microbiology (Soil/Agril.Microbiology)