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A field experiment was conducted to investigate the soil microbial growth and enzymatic activity of Treated Distillery Effluent (TDE) and Bio-compost (BC)

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A field experiment was conducted to find out the effect of treated distillery effluent (TDE) and bio-compost (BC) application on productivity of maize crop grown in vertisols having clay loam texture. Five levels each of organic fertilizers in main plot (control, TDE at 50 kL ha -1 , TDE at 100 kL ha -1 , BC at 5 t ha -1 and FYM at 12.5 t ha -1 + bio-fertilizers and inorganic fertilizers in sub plot (control, 50, 75, 100% recommended dose (RD) of N (nitrogen) & P (phosphorus) and 100% RD of N+P+K (potassium) were tested in split plot design and replicated thrice. Application of TDE at100 kL ha -1 along with either 100% RD of NPK or NP increased the grain and stover yield by 18.3-26.3 and 37.6-47.15% respectively, over control. However, this treatment was found comparable with FYM at 12.5 t ha -1 + bio-fertilizers along with either 100% RD of NPK or NP. Similarly, dry matter production was also found maximum with the application of TDE at 100 kL ha -1 and FYM 12.5 t ha -1 + bio-fertilizers. The growth and yield attributes of maize viz., plant height, leaf area index, cob length, cob girth, number of grain rows cob -1 , number of grains row -1 , number of grains cob -1 , 100-grains weight and cob weight were significantly increased by TDE application and the highest values were recorded at 100kL ha -1 along with100% RD of NPK as well as NP fertilizers. TDE contain considerable level of plant nutrients which were made available to the plant, thus resulted in better growth and productivity yield of maize.