Subscribe Now Subscribe Today
Science Alert
 
FOLLOW US:     Facebook     Twitter
Blue
   
Curve Top
Journal of Entomology
  Year: 2006 | Volume: 3 | Issue: 1 | Page No.: 40-47
DOI: 10.3923/je.2006.40.47
Efficacy of Rubber Seed Oil, Palm Oil and Palm Kernel Oil as Grain Protectants against Sitophilus zeamais (Mots.) (Coleoptera: Curculionidae) in three Maize Varieties
K.E. Law-Ogbomo and D.A. Enobakhare

Abstract:
The efficacy of rubber seed oil, palm oil and palm kernel oil as maize grain protectants against Sitophilus zeamais was tested on three maize varieties [‘Uselu’ local, SUWAN-1 and Oba Super 1 (8321-18) using a 3x5x3 factorial arrangement in a Randomized Complete Block Design. There were four replications of each of the vegetable oils using application levels of 0, 2.5, 5.0, 7.5 and 10.0 mL kg 1 maize grain. All studies were undertaken under laboratory temperature of 28±3% rh. Fifteen sexed adult insects were used for each replicate. In all the treatments, a range of significant percentage mortality of adult weevils (55-93%) at 21 days after treatment was obtained (p<0.05). Mean percentage adult weevil mortality in treated grain (70.5%) was significantly higher than in the control (0.0%). The treated grains gave adequate protection by having lower oviposition (19.8%) than the untreated control (94.5%). This was also observed to have lower adult weevil emergence (8.9%) than the untreated control (85.3%). The vegetable oils gave appreciable reduction in percentage weight loss (2.2%) when compared with the untreated control (47.3%) and had no adverse effects on grain quality. From the study, the plants could be ranked in order of effectiveness thus: rubber seed oil > palm oil> palm kernel oil. The "Uselu" local was found to be more resistant to maize weevil infestation than the improved varieties (SUWAN-1) and Oba super 1 (8321-18).
 [Fulltext PDF]   [Fulltext HTML]   [XML: Abstract + References]   [References]   [View Citation]  [Report Citation]
 RELATED ARTICLES:
  •    Postharvest Insect Pest and Foliar Disease Resistance and Agronomic Performance of New Maize Hybrids in East Africa
How to cite this article:

K.E. Law-Ogbomo and D.A. Enobakhare , 2006. Efficacy of Rubber Seed Oil, Palm Oil and Palm Kernel Oil as Grain Protectants against Sitophilus zeamais (Mots.) (Coleoptera: Curculionidae) in three Maize Varieties. Journal of Entomology, 3: 40-47.

DOI: 10.3923/je.2006.40.47

URL: https://scialert.net/abstract/?doi=je.2006.40.47

 
COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 
 

Curve Bottom