Among two hundred and twelve entries screened in blotter paper method only one entry ie. PBG 5 was found to be moderately resistant, twenty nine entries found moderately susceptible, one hundred and nine entries were found susceptible and seventy three entries were found highly susceptible (Table 2). Earlier workers have also screened chickpea genotypes against dry root rot.
Nagamma et al., (2015) screened hundred and sixty five chickpea entries and reported none of them to be resistant or moderately resistant. Whereas,
Pande et al., (2004) screened forty seven chickpea germplasm lines and found three of them to be resistant, 22 moderately resistant, 19 susceptible and three highly susceptible under blotter paper technique.
Om et al., (2012) screened 170 genotypes for dry root rot during the year 2007-10 under blotter paper method, 68 genotypes exhibited resistant reaction (<10% mortality).
Among the fourteen treatments imposed for the management of dry root rot in chickpea in both
kharif and
rabi season of 2013-14. The seed treatment with tebuconazole @ 2 g/kg (T10) recorded the lowest (11.77 and 7.08%) dry root rot incidence with a yield of 666.57 kg/ha and 779.04 kg/ha, respectively in
kharif and
rabi and is at par with T11 [ST with tebuconazole (2 g/kg) + carbendazim (1 g/kg)] which recorded 15.09 and 15.05 per cent disease incidence with a yield of 564.43 kg/ha and 629.04 respectively in
kharif and
rabi. These treatments were found significantly superior over control which recorded highest dry root rot incidence as 41.87 and 38.33 with a lowest yield of 310.55 kg/ha and 413.49kg/ha respectively, in
kharif and
rabi (Table 3).
In both the seasons the treatment T10: ST with tebuconazole @ 2 g/kg recorded lowest per cent disease incidence of 9.43, with a highest yield of 722.81 kg/ha, which is at par with T11: ST with tebuconazole 2 g + carbendazim 1 g/kg which recorded 15.07 per cent disease incidence with a yield of 596.74 kg/ha followed by T8: ST with carbendazim 2 g + captan 1 g/kg of seed which recorded 15.21 per cent disease incidence with a mean yield of 519.92 kg/ha. These treatments are significantly superior to control which recorded 40.10 per cent disease incidence with a lowest mean yield of 362.02 kg/ha (Table 3).
It has been shown that tebuconazole ((RS)-1-(4-chlorophenyl)-4,4-dimethyl-3-(1H-1,2,4-triazole-1-ylmethyl)-pentan-3-alcohol) was highly effective against
Fusarium graminearum (Spolti et al., 2012). It is a systemic fungicide of the triazole group, and the primary mode of action is the inhibition of ergosterol biosynthesis in fungi (
Hewitt, 1998). Even though different triazole fungicides have a similar mechanism of action, they may show marked differences in their activity against different fungal pathogens (
Buchenauer, 1987;
Scheinpflug and Kuck, 1987). This broad-spectrum, relatively new triazole fungicide is being used for its effectiveness against soil-borne and foliar fungal diseases in nut, fruit, cereal and vegetable crops worldwide
(Munoz-Leoz et al., 2011).
Results of the present study are in agreement with
Brenneman et al., (1991) who reported the antifungal activity of tebuconazole against
Sclerotium rolfsii and
Rhizoctonia solani in vitro.
Kanwal et al., (2012) evaluated different concentrations
viz. 35, 70, 105 and 140 ppm of tebuconazole against three problematic soil-borne fungal phytopathogens namely
M. phaseolina, F. oxysporum f. sp.
lycopersici and
S. rolfsii using food poisoning technique, all the concentrations of tebuconazole completely arrested the growth of all the three fungal species.