000			03734nam a22002297a 4500
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040			_cCPGS
100			_aDeepu Kumar _910310
245			_aEco-friendly management aspects against white mold disease of Brassica oleracea var. italica / _cDeepu Kumar.
260			_aUmiam : _bCPGSAS,CAU(Imphal), _cSeptember 2024.
300			_a110p.
440			_a[Plant Pathology, School of Crop Protection] _99105
504			_aIncludes bibliographical references.
520			_aOrganically produced functional food has dominated the global consumer market with increased demand in the last decades. The most commonly consumed vegetable, as a functional food is broccoli belonging to the Brassicaceae family. Adaptability and the increasing demand for broccoli crop have led to increase in the acreage and production of this crop throughout the subtropical areas as well as the north eastern region of the country. The North East a biodiversity hotspot region is home to many phytopathogenic as well as beneficial microbes. The soil-borne cosmopolitan, necrotrophic, and host nonspecific Sclerotinia sclerotiorum is an emerging and dreaded pathogen for crop production systems in the terraces of the NE hills region. Amongst the various biocontrol agents Trichoderma species clearly dominate as biofungicides owing to its parasitizing ability on diverse group of phytopathogens. Organic farming in the hill state of Meghalaya has been contributing to the ecological balance and the agrian economy. Ten (10) Trichoderma isolates were identified based on morphology, microscopic and molecular characterization. In vitro, evaluation of the isolates showed growth rate of 4.422 mm/h (TML-7) and 3.870 mm/h (TML-6), with correlated biomass production of 7.013 g/100ml (TML-7) and 6.597 g/100ml (TML-6). Similarly, screening of the ten isolates revealed high Zn solubilizing ability of TML-7 (95.14 %) and TML6 (87.05 %) and PO4 solubilizing ability TML-7 (42.71 %) and TML-6 (47.81 %). All the isolates exhibited more than 50 percent inhibition of the fungi S. sclerotiorum. Maximum inhibition of 100 % was shown by TML-7 (T. viride), followed by 90.37 % inhibition by TML-6 (T. asperellum) against the test pathogen. The combined efficacy of best potential Trichoderma isolates [TML-7 (T. viride) and TML-6 (T. asperellum)] and ecofriendly inputs (neem oil cake 0.1 % and essential oil-citronella 25 μl/ml) were further tested in pot experiment with 14 treatments. The results showed the treatment combination of neem oil cake (0.1%) +TML-7 (T. viride) + citronella oil (25 μl/ml) (T-11) could completely reduce the white mold disease incidence of broccoli which was at par with the treatment (T7) with fungicide [Amistar Top (Syngenta)]. Accordingly, the maximum yield was for the treatments T-11 and T-12 which were 4.46 kg and 4.42 kg respectively and at par statistically. The best treatments from pot experiment were further evaluated with field experiment. Field experiment results showed the lowest percent disease incidence of 7.42 % for the treatment T-6 [neem oil cake (0.1 %) +TML- 7 (T. viride) + citronella oil (25μl/ml)], followed by 7.74 % for T-7 (Amistar Top) and 9.19 % for T-5 [neem oil cake (0.1 %) +TML-6 (T. asperellum) + citronella oil (25 μl/ml)]. The maximum yield was recorded in the treatment T-6 of 7.05 q/ha, followed by treatment T- 7 of 6.82 q/ha.
650			_aBrassica oleracea _xWhite mold diseases. _910311
650			_aDiseases _xBio-control management. _910312
700			_aBorah, Tasvinah R. _eMajor Advisor. _910313
856			_uhttps://krishikosh.egranth.ac.in/handle/1/5810220784 _yOnline.
942			_2ddc _cTH
999			_c5713 _d5713