Vol. 11, Issue 3 (2022)

Author(s):
Sowmya KJ, Rame Gowda, Rajendra Prasad S, Yogeesha HS and Pallavi HM

Abstract:
Priming was done by using high and low vigour seeds with cow dung slurry, vermiwash, Azospirillum, PSB and Tricoderma viridae, at two temperature conditions. High vigour seeds recorded significantly higher seed quality attributes like first and final count germination, Bartlett rate index (BRI) an indicative of speed of germination, mean seedling length (MSL), mean seedling dry weight (MSDW), seedling vigour index (SVI- I) and SVI- II (84.94%, 89.83%, 0.533, 28.48 cm, 9.97 mg, 2562 and 899, respectively). The T₅₀ value and mean germination time (MGT) were also lower (1.19days and 1.65days) in high vigour seeds. Among the biological agents tested, significantly higher first and final count germination, BRI, MSL, MSDW, SVI- I and SVI- II (84.67%, 87.42%, 0.526,30.38 cm, 10.47 mg, 2652 and 915, respectively) was registered in PSB primed seeds. The T₅₀ value and mean germination time (MGT) were also lower (1.42 days and 1.77 days) in PSB primed seeds. The best performed biological agents were cow dung slurry followed by PSB, Vermiwash, Tricoderma viridae and Azospirillum in the order of their performance, when seeds primed at the temperature of 25± 1 ⁰C.