National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Six non-systemic fungicides viz., captan 50 WP, copper oxychloride 50 WP, dodine 65 WP, mancozeb75 WP, propineb 70 WP and zineb 80 WP and five systemic fungicides viz., bitertanol 25 WP, carbendazim 50 WP, difenconozole 25 EC, hexaconozole 5EC, and myclobutanil 10 WP were evaluated against tuber rot of kalazeera caused by Fusarium solani. The in-vitro evaluation of non-systemic fungicides through poisoned food technique at five different concentrations viz., 50, 100, 250, 500 and 1000 ppm on active ingredient basis (a.i) indicated that dodine was most effective exhibiting mean mycelial growth inhibition of 82.27 per cent followed by captan (67.99%). Copper oxychloride proved least effective and resulted in only 29.81 per cent mean inhibition of mycelial growth. Among the systemic fungicides, evaluated at concentrations viz., 25, 50, 100, 200 and 500ppm on active ingredient basis (a.i), carbendazim proved most effective exhibiting mean mycelial growth inhibition of 90.23 per cent followed by hexaconozole and bitertanol with 71.24 and 64.56 per cent mean mycelial growth inhibition, respectively. Myclobutanil proved least effective and resulted in only 52.76 per cent mean inhibition of mycelial growth. Five strains of Trichoderma viride strains designated as Tv-1, Tv-2 Tv-3, Tv-4, Tv-5 and two strain of Trichoderma harzianum designated as Th-1 and Th-2 were also evaluated against tuber rot pathogen. Among the bio-control agents Tv-4 was most efficacious and resulted in 48.20 mean mycelial growth inhibition followed by Tv-2 with 47.06 per cent mean inhibition of mycelial growth. Trichodermaviride-5 (Tv-5) proved least efficious and resulted in only 26.40 per cent mean inhibition of mean mycelial growth.
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