The present investigation was conducted in the screen-house of the Department of Horticulture, College of Agriculture,CCS Haryana Agricultural University, Hisar during the two successive seasons of 2011-12 and 2012-13 to investigate the potential effect of different strains of Bacillus and Pseudomonas on growth and flowering of chrysanthemum. The obtained results revealed that the inoculation of plants with strains of biofertilizers significantly improved the growth and flowering parameters. The maximum plant spread and fresh weight of plant were recorded in plants

inoculated with PS2 strain of Pseudomonas (CPA152) and BS3 strain of Bacillus (SB127) in both the years. The dryweight of plant was noticed maximum with PS3 strain of Pseudomonas (P20) and BS2 strain of Bacillus (SB155) in first year and PS2 strain of Pseudomonas (CPA152) and BS3 strain of Bacillus (SB127) in second year. The maximum number of buds/plant was recorded with inoculation of PS3 (P20) and PS2 strains (CPA152) of Pseudomonas, whereas, among Bacillus strains, BS3 (SB127) was recorded best in both the years. The minimum number of days to 

first flowering as well as longest flowering duration was recorded with application of PS2 strain of Pseudomonas (CPA152) in both the years, and among Bacillus strains, BS3 (SB127) and BS2 strain (SB155) were found best in the year 2011-12 and 2012-13, respectively. The maximum flower size was noticed with PS3 strain of Pseudomonas (P20) in first year whereas, in second year the response of Pseudomonas strains was found non-significant. AmongBacillus strains, the plants inoculated with BS3 (SB127) recorded maximum flower size. Flower stalk length was significantly influenced by different strains of Pseudomonas and Bacillus. The longest flower stalk was recorded in plants inoculated with PS3 (P20) and PS2 (CPA152) strains of Pseudomonas in the year 2011-12 and 2012-13, respectively. The plants inoculated with BS3 strain of Bacillus (SB127) recorded maximum stalk length in the years. Maximum number of flowers/plant, fresh and dry weight of flower and flower yield/plant were recorded in plants inoculated with PS2 strains of Pseudomonas (CPA152) and BS3 strains of Bacillus (SB127). The number of suckers 

plant-1 was noticed maximum with PS3 strains of Pseudomonas (P20) and BS3 strains of Bacillus (SB127) in both the years.