The field experiment was driven during Rabi 2018 at Research Farm, Selakui, Dehradun, Uttarakhand. The treatment consists of two different bio-fertilizers (Azotobacter and Phosforus solubilizing bacteria) and three different nutrient level 75% RDNP, 100% RDNP and 125% RDNP, whose effect was perceive on Indian mustard. The trial was laid out in Randomized Block Design in which consist of eight treatments which are replicated thrice. The outcome manifest that utilization azotobacter + PSB with 125% RDNP (N 112.5 7 P 50 kg/ha) remarkably increased the growth variables of Indian mustard viz, plant extent (174.76 cm), Dry matter accumulation (47.90 g/ plant), number of primary branches (7.67), no. of functional leaves (18.40). Application of Azotobacter + PSB in crop with 125% fertility level significantly lofty Leaf area index (4.42 per plant) at 90 DAS.. Using of Azotobacter + PSB with 112.5 nitrogen & 50 kg phosforus per ha showed significantly higher the yield parameters viz, siliqua per plant (140.75), total size of siliqua (4.78 cm), mean seed per siliqua (12.12), total seed weight (1717 kg/ha), Stover yield (4355 kg/ ha). However, Harvest index (28.28 %) was notably recorded in treatment Azotobacter + PSB + N 112.5 kg/ ha + P 50 kg/ha. So, the combined effect of growth and yield traits were ultimate review in production of highest seed yield by sowing of Indian mustard with utilization of Azotobactor + PSB + N 112.5 & P 50 kg per ha and only N 112.5 & P 50 application should be put forwarded for farmers of that locality of Uttarakhand.

Indian mustard, Azotobacter, PSB, Nitrogen, Growth

Based on result acquired under the study it can be concluded that integrated inoculation of Azotobactor & PSB along with 112.5 kg nitrogen & 50 kg phosforus per hectare gave maximum output production in Indian mustard.

Sudhir Partap and Daksh Bishnoi (2022). Influence of Bio-fertilizer and Fertility Levels on Growth and Yield of Indian Mustard (Brassica juncea L.). Biological Forum – An International Journal, 14(4a): 568-571.