Effect of biofertilisers on phenology and yield performance of different varieties of Isabgol (Plantago ovate Forsk.)

An experiment was carried out at the College of Horticulture, RVSKVV, Mandsaur (M.P.) during the rabi season of the year 2020-21 in factorial randomized block design with three replications with four varieties, viz; Gujarat Isabgol-1, Gujarat Isabgol-2, Vallabh Isabgol-1 and Jawahar Isabgol-4 as a main plot with two biofertilizer (B₁-Azotobacter @5 kg ha^-1 and B₂-PSB @3 kg ha^-1) as sub plot and one untreated control (B₀-control) on isabgol. Results revealed that variety JI-4 was superior in number of seeds per spike (83.28), seed yield (13.09 q ha^-1), straw yield (44.21 q ha^-1), biological yield (57.30 q ha^-1), test weight (2.08 g), harvest index (22.79 %) and seed husk ration (2.96) to other varieties. Also early germination (5.22), flowering (61.67) and maturity (110.44) was observed in the same variety. However, higher number of seeds per spike (82.92), seed yield (10.88 q ha-1), straw yield (39.75 q ha-1) biological yield (50.63 q ha-1), test weight (1.99 g), harvest index (21.27%) and seed husk ratio (2.75) and early germination (6.06), flowering (64.00) and maturity (114.31) found with Azotobacter. Under interactions, maximum number of seeds per spike (84.70), seed yield (14.57 q ha^-1), straw yield (46.95 q ha^-1), biological yield (61.52 q ha^-1), test weight (2.11 g), harvest index (21.99 %) and seed husk ratio (3.18) and early germination (5.00), flowering (66.67) and maturity (109.33) also found in JI-4 with treated with Azotobacter.