Global Advanced Research Journal of Agricultural Science (GARJAS) ISSN: 2315-5094
August 2016 Vol. 5(8): pp. 339-343
Copyright © 2016 Global Advanced Research Journals

 

Full Length Research Paper

Effects of Temperature on the Incidence and Severity of Pre-Emergence and Post-Emergence Damping off of Cowpea (Vignaunguiculata L.) By Pythium debaryanum

1Chadi, .M.,1 Auyo, M.I., 2Daniel, A.K., and 1Kutama, A.S.,

 

1Department of Biological Sciences, Faculty of Sciences, Federal University  Dutse, Jigawa State, Nigeria

2Department of Environmental Sciences, Faculty of Sciences, Federal University  Dutse, Jigawa State, Nigeria

Email: kutamasak@yahoo.com

Accepted 13 August, 2016

 

Abstract

The focus of this study is on the effect of different temperature on the incidence and severity of pre-emergence and post-emergence damping off of cowpea (Vignaunguiculata) caused by Pythium debaryanum. This research was conducted using 130 viable cowpea seeds each for pre-emergence and post-emergence damping. Germinating and germinated seeds, as the case may be, were incubated in groups of 10 in three replicates at 20, 25, 30, 35 and 400C. A replicate of 10 samples each was observed as control for pre-emergence and post-emergence damping off. The findings of this research show clearly that the effect of temperature on the incidence and severity of damping off on Cowpea by Pythium debaryanum was significant for both pre-emergence and post-emergence damping off. In both cases, disease incidence for the lowest and highest treatment temperature was 70% and 96.7% respectively. This means that the incidence and severity of damping off increases with increased temperature in both seeds and seedlings.

Keywords: Pre-emergence, Post-emergence, Damping off, Vignaunguiculata, Pythium Debaryanum.

   


 

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