Vol. 6, Special Issue 4 (2018)
Morphological and Cultural studies of Pyricularia grisea on Small Millets and their management through bio-control agents
Author(s): Avinash Kumar Paswan, Savita Ekka, HC Lal and Satish kumar pandey
Abstract: 18 monoconidial isolates of P. grisea were obtained from four different Small millets sowing characteristic symptom on foliage. Among them, only four isolates were selected and designated as Pg1, Pg2, Pg3 and Pg4 based on their growth characteristics and respective host for intensive characterization. Variability among the isolates of P. grisea was also determined on the basis of their sensitivity on six different plant extract/ botanicals and an herbal disease controller under laboratory conditions. In the present study, the commercial herbal plant extract Zuki at 5 and 10 per cent concentrations recorded maximum growth inhibition of all isolates and was found to be the most effective treatment. Among plant extract/botanicals bulb extract of Allium cepa (onion) recorded maximum growth inhibition of Pg1 and Pg3 isolates at 5% & 10% concentration whereas leaf extract of Oxalis latifolia (Teenpatia) obtained maximum growth inhibition of Pg2 and Pg4 respectively. In present study, there was significant difference among the bio-control agents evaluated against different isolates of P. grisea. The bio-control agent T. viride inhibit maximum mycelial growth (81.81%) of isolate of finger millet (Pg1) and (79.08%) of isolate of foxtail millet (Pg4) whereas the bio-control agent P. fluorescens inhibited the maximum mycelial growth (80.16%) of isolate of little millet(Pg2) and (95.61%) growth of isolate of proso millet (Pg3). Eco-friendly management through botanical and bio-control agents resulted that seed treatment with T. viride @ 4g/kg + 1st foliar spray with Zuki @ 0.1% + two foliar spray with P. fluorescens @ 0.6% recorded maximum diseases control 55.55 per cent and 61.42 per cent in neck blast and finger blast respectively, with highest grain yield 1530.87 kg/ha.
Pages: 223-227 | 661 Views 51 Downloads
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How to cite this article:
Avinash Kumar Paswan, Savita Ekka, HC Lal and Satish kumar pandey. Morphological and Cultural studies of Pyricularia grisea on Small Millets and their management through bio-control agents. International Journal of Chemical Studies. 2018; 6(4): 223-227.
