STUDIES ON MICROBIAL MANAGEMENT OF STALK ROT OF MAIZE (Zea mays L.)
| dc.contributor.advisor | KRISHNA NAIK, L. | |
| dc.contributor.author | RAMESHA, V. | |
| dc.date.accessioned | 2018-12-19T08:48:12Z | |
| dc.date.available | 2018-12-19T08:48:12Z | |
| dc.date.issued | 2018-08-02 | |
| dc.description.abstract | Of late, maize stalk rot has become a serious threat in maize crop and causes yield loss up to 35 per cent, the present investigations on microbial management of stalk rot of maize were carried during the year 2014-17. Studies were carried with respect to survey, Isolation and pathogenicity of stalk rot causing pathogens, isolation and evaluation of antagonists against pathogen. A survey on incidence of stalk rot of maize in southern Karnataka revealed that maximum disease incidence was recorded in Chikkaballapura district (23.55%). Pathogens were isolated from the disease samples collected from different locations viz., Gouribidanur (F-1), Thondebhavi(F-2), Periyapatna(F-3), Chennapatna(F-4), Chennarayapatna(F-5), Tarikere(F-6), Kallalli(F-7), Gama(F-8), Hinduvalli(F-9 ) and Hirekerur (F-10). The isolate F-2, was recorded the maximum disease rating (9.0). This isolate was confirmed as Fusarium solani by National Center of Fungal Taxonomy. Hence F-2 isolate was carried for further studies under green house and field conditions. From the collected soil samples 24 fungal and 29 bacterial isolates of biocontrol agents were isolated from rhizosphere soil and 19 fungal and 18 bacterial isolates were obtained from non rhizosphere soil. Based on in vitro screening against F. solani, five fungal and 10 bacterial efficient strains were selected for further studies. The fungal and bacterial antagonists screened against F. solani under in vitro condition. Maximum per cent inhibition of pathogen (91.37) was observed with fungal isolate CNF10. Based on the morphological and biochemical characterization of efficient fungal and bacterial antagonists, they were identified as Trichoderma sp. Pseudomonas sp. and Bacillus sp. Among the different antagonists and method of application tested against the pathogen, application of Trichoderma sp. as seed treatment + soil application (T9) showed better plant growth and yield with least disease incidence. | en_US |
| dc.identifier.other | TH-11975 | |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810086079 | |
| dc.language.iso | en | en_US |
| dc.pages | 234 | en_US |
| dc.publisher | UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU | en_US |
| dc.sub | Agricultural Microbiology | en_US |
| dc.subject | null | en_US |
| dc.theme | STUDIES ON MICROBIAL MANAGEMENT OF STALK ROT OF MAIZE | en_US |
| dc.these.type | Ph.D | en_US |
| dc.title | STUDIES ON MICROBIAL MANAGEMENT OF STALK ROT OF MAIZE (Zea mays L.) | en_US |
| dc.type | Thesis | en_US |