Vol. 11, Issue 8 (2022)

Author(s):
Rahul Kumar, Ram Pyare, Bhayankar, G Singh, SC Maurya and Abhishek Raj Ranjan

Abstract:
The present study was conducted during Rabi season of 2021-22 at the Student Instructional Farm of Chandra Shekhar Azad University Agriculture & Technology, Kanpur, Uttar Pradesh with the objectives to find out suitable fertilizer dose with bio-fertilizer on growth and yield of mustard crop. The experiment was laid out in a Factorial Randomized Block Design with three replication. The experiment was comprised of sixteen treatment combinations in which four levels of nutrient management viz., Control, 75% RDF, 100% RDF, 125% RDF and four bio-fertilizer viz., Control, Azotobacter @10 ml kg^-1 seed, PSB @10 ml kg^-1 seed, Azotobacter @5 ml + PSB @5 ml kg^-1 seed. The result showed that among the different recommended dose of fertilizers, applied of 125% RDF gave significantly better growth attributes, yield attributes and yields in compared to control, 75% and 100% RDF, respectively. The percentage increment of 125% RDF over no nutrients supply, 75% RDF and 100% RDF were 38.51%, 19.75% and 10.95% in respect of grain yield, 38.98%, 16.84% and 9.38% in stover yield, 35.16%, 17.60 and 9.80% in biological yield and 2.38%, 1.73% and 9.80% in harvest index, respectively. Among the different levels of bio-fertilizers, application of Azotobacter @5 ml + PSB @5 ml kg^-1 seed gave significantly higher growth attributes, yield attributes and yields in compare to all rest, respectively. The increment evaluated in grain yield (24.27, 14.62 and 7.29%), straw yield (25.80, 12.81 and 6.42%) in biological yield (26.74, 13.31 and 6.62%) and in harvest index (1.93, 1.09 and 0.60%) over control, Azotobacter @10 ml kg^-1 and PSB @10 ml kg^-1 seed, respectively. Therefore, higher growth attributes, yield attributes and yields of Indian mustard were achieved by application of 125% recommended dose of fertilizer and inoculation with Azotobacter @5 ml + PSB @5 ml kg^-1 seed over rest treatment, respectively.