INVESTIBATIONS ON THE ETIOLOGY, EPIOEMiOLOGY AND INTEGRATED MANAGEMENT OF RHIZOME ROT COMPLEX OF GINGER AHO TURMERIC
| dc.contributor.advisor | SRIKANT KULKARNI | |
| dc.contributor.author | SHALINI D. SAGAR | |
| dc.date.accessioned | 2019-06-21T07:54:43Z | |
| dc.date.available | 2019-06-21T07:54:43Z | |
| dc.date.issued | 2007-08-31 | |
| dc.description.abstract | The major constraint for cultivation of ginger and turmeric is the rhizome rot disease. The rhizome rot incidence of ginger was noticed in all the locations surveyed with the range from 5.50 to 45.60 per cent. The major diseases diagnosed were iHz., soft rot caused by Pythium aphanidermatum (Edson) Fitzp, wet rot caused by Fusarium solani (Martius) Saccardo, bacterial wilt caused by Ralstonia solanacearum (Smith) Yabuuchi, Sclerotium rot caused by Sclerotium rolfsii Saccardo and root knot caused by Meloidogyne arenaria (Neal) Chitwood. The individual pathogen can cause rhizome rot or combination of pathogens also can cause rhizome rot. Pythium aphanidermatum was isolated from all the locations collected and found to be most predominant pathogen. Ralstonia solanacearum was detected only from the southern districts of Karnataka i.e., Kodagu, Chikmagalur, Hassan, Mysore, and Sagar. The incidence of rhizome rot of turmeric was meager as compared to ginger. The inoculum level studies revealed that, increase in per cent inoculum level increased the per cent disease incidence. In sequential inoculation studies, in case of both the crops i.e., ginger and turmeric, when first inoculated with Meloidogyne arenaria followed by other pathogens showed maximum disease incidence as compared to individual inoculations. The results of isozyme analysis of three i.e., peroxidase, polyphenol oxidase and catalase studied for variability indicated that, there was slight amount of variation. RAPD data distinguished the twelve isolates into two major clusters A and B. The results revealed that, geographical locations of isolates were closely related. Maran and Vardha ginger varieties were considered as moderately resistant. CO-1 variety was considered as moderately resistant. Sowing in March significantly showed less disease incidence at both the locations of Sirsi and Bidar, which recorded 8.25 and 9.00 per cent respectively. The field experiment conducted at farmer field revealed that, there was significant increase in the per cent germination of rhizomes in solarized plot when compared to non solarized plot. Among the different treatments, rhizomes treated with Metalaxyl MZ @ 0.3 per cent+Soil application of T. harzianum @ 10 kg along with 25 t FYM/ha+Soil application of Eupatorium @ 10 t/ha recorded the highest per cent germination, lesser disease incidence, higher yield of 11720.20 kg/ha and more benefit cost ratio. | en_US |
| dc.identifier.other | TH8841 | |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810109482 | |
| dc.language.iso | en | en_US |
| dc.pages | 292 | en_US |
| dc.publisher | University of Agricultural Sciences GKVK, Banglore | en_US |
| dc.sub | Plant Pathology | en_US |
| dc.subject | null | en_US |
| dc.theme | INVESTIBATIONS ON THE ETIOLOGY, EPIOEMiOLOGY AND INTEGRATED MANAGEMENT OF RHIZOME ROT COMPLEX OF GINGER AHO TURMERIC | en_US |
| dc.these.type | Ph.D | en_US |
| dc.title | INVESTIBATIONS ON THE ETIOLOGY, EPIOEMiOLOGY AND INTEGRATED MANAGEMENT OF RHIZOME ROT COMPLEX OF GINGER AHO TURMERIC | en_US |
| dc.type | Thesis | en_US |