Standardization of Suitable Concentration and duration of Seed Biopriming with Liquid Biofertilizers for Seedling Vigour Improvement in Rice

Abstract— An investigation was carried out with PMK (R) 4 rice seed in order to standardize suitable concentration and duration of seed biopriming with liquid biofertilizers (Azospirillum, Phosphobacteria and Silicate Solubilizing Bacteria) and liquid biocontrol agent (Pseudomonas fluorescens) a laboratory experiment was conducted in Department of Seed Science and Technology, Madurai, Tamil Nadu Agricultural University, in Completely Randomized Design with four replicates along with control. The results of the experiments revealed that seeds bioprimed with 20% concentration Pseudomonas fluorescens and 20% Azospirillum for 18h duration germinated earlier and expressed its vigour in terms of increased speed of germination, germination percentage, shoot and root length and vigour index compared to other treatments.