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Effect of fungicide seed treatments on germination and vigour of maize seed
Dissertation (MInstAgrar)--University of Pretoria, 2011.
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University of Pretoria
2013
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| _version_ | 1867613631290540032 |
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| access_status_str | Open Access |
| author2 | Aveling, Terry A.S. |
| author_browse | Aveling, Terry A.S. |
| author_facet | Aveling, Terry A.S. |
| collection | Thesis |
| dc_rights_str_mv | © 2008, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MInstAgrar)--University of Pretoria, 2011. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/29544 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:39:12.888Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/29544 Effect of fungicide seed treatments on germination and vigour of maize seed Aveling, Terry A.S. Kritzinger, Quenton upetd@up.ac.za Kandolo, Sadiki Delphin Pests Diseases Maize seed Fungicide seed Plants Fusarium graminearum UCTD Dissertation (MInstAgrar)--University of Pretoria, 2011. Fungicides have been developed to protect plants against diseases and pests, which cause serious problems such as the loss of germination and vigour. The aim of this study was to test the germination and vigour of maize (Zea mays L.) seeds treated with several fungicides Apron® Star 42 WS (difenoconazole, thiamethoxam, and metalaxyl-m), Apron® XL (mefenoxam), Celest® XL (fludioxonil, mefenoxam) and thiram in the laboratory. In the greenhouse, the efficacy of fungicide treatment was evaluated in soil inoculated with Fusarium graminearum. The control consisted of untreated seeds. Germination and vigour were evaluated according to the International Seed Testing Association (1ST A) rules. The results from the standard gennination tests showed that all the fungicide treated seeds did not differ to the untreated control. The conductivity of solute leakage was read following slow and fast imbibition. Maize seeds treated with Apron® Star 42 WS, Celest® XL, Apron® XL and thiram improved or maintain vigour, which was indicated by a reduced or equivalent solute leakage following fast imbibition when compared with the untreated control. The good performance of fungicide treated seed expressed during conductivity test after fast imbibition correlated with the tetrazolium. All the fungicide treated seeds maintained the same viability as the untreated control following fast imbibition. After 6 h after fast imbibition, Apron® Star 42 WS, Celest® XL and Apron® XL treated seeds maintained similar germination percentages when compared to the untreated control with the exception of thiram treated seeds that exhibited a decline in seed viability. There was reduction in vigour in all the fungicide treated seeds fo llowing 24 and 40 h fast imbibition as illustrated by the reduction in germination percentage below the acceptable level (70%) when compared with the untreated control. The greenhouse study showed that all the fungicide treated seeds maintained the same emergence percentage in both inoculated and uninoculated soil with the exception of thiram treated seeds, where emergence improved in inoculated soil when compared to the untreated control. Apron® Star 42 WS and Celest® XL reduced the disease caused by F. graminearum in the inoculated soil. This study also revealed that the application of Apron® Star 42 WS, Celest® XL and thiram to seeds improved both the shoot and root dry mass of plants in the inoculated soil. Microbiology and Plant Pathology unrestricted 2013-09-07T15:53:21Z 2008-11-27 2013-09-07T15:53:21Z 2008-09-03 2011-03-15 2008-11-18 Dissertation Kandolo, SD 2008, Effect of fungicide seed treatments on germination and vigour of maize seed, MInstAgrar dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/29544 > E1215/gm http://hdl.handle.net/2263/29544 http://upetd.up.ac.za/thesis/available/etd-11182008-135444/ © 2008, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Pests Diseases Maize seed Fungicide seed Plants Fusarium graminearum UCTD Effect of fungicide seed treatments on germination and vigour of maize seed |
| title | Effect of fungicide seed treatments on germination and vigour of maize seed |
| title_full | Effect of fungicide seed treatments on germination and vigour of maize seed |
| title_fullStr | Effect of fungicide seed treatments on germination and vigour of maize seed |
| title_full_unstemmed | Effect of fungicide seed treatments on germination and vigour of maize seed |
| title_short | Effect of fungicide seed treatments on germination and vigour of maize seed |
| title_sort | effect of fungicide seed treatments on germination and vigour of maize seed |
| topic | Pests Diseases Maize seed Fungicide seed Plants Fusarium graminearum UCTD |
| url | http://hdl.handle.net/2263/29544 http://upetd.up.ac.za/thesis/available/etd-11182008-135444/ |