Global Advanced Research Journal of Agricultural Science (GARJAS) ISSN: 2315-5094

September 2013 Vol. 2(9): pp. 252-255

Copyright © 2015 Global Advanced Research Journals

 

Full Length Research Paper

Effects of some herbicides on the survival of Colletotrichum graminicola (Cesati) Wilson

Kiyawa1, S, A., 2Lawan*, S.A., 3Halima, B.  and 3Bilkisu, A. I.

 

1Department of Chemistry, Federal College of Education (Tech.) Bichi, Kano State

2Department of Biological Sciences, College of Arts, Sciences and Remedial Studies, Kano, Nigeria

3Department of Science Laboratory Technology, Kano State Polytechnic, Kano, Nigeria

*Corresponding Author’s Email: kutamasak@yahoo.com;  

Tel: +2347067371893

Accepted 30 September, 2013

 

Abstract

The aim of this investigation was to evaluate the effects of some herbicides (Butachlor and Glyposate) on the survival of Colletotrichum graminicola, the causal organism of soft rot of most fruits, tubers and vegetables. Three different concentrations of the herbicides and a check (20%, 50%, 80%, and 0% or water) were prepared and amended with PDA medium, and each was replicated five times. At least 50 fungal spores of Colletotrichum graminicola were germinated on each of herbicide- PDA medium and incubated for a period of seven days. The results of the study has shown that 50% concentration of both Butachlor and Glyposate produced the highest inhibitory effect on the spore germination of the fungal isolate while 20% concentration of both herbicides produced little or no effect on spore germination. Similarly, both at 50% and 80% concentrations of the two herbicides, there was significant (P<0.05) reduction in the mycelia diameter of the fungus. This suggests that both butachlor and glyposate at 50% and 80% could confer resistance to sorghum against leaf anthracnose caused by Colletotrichum graminicola.

Keywords: herbicide, Colletotrichum graminicola, spore germination, mycelial length. 

 

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