Quick Menu

Upcoming Journals

Asian Journal of Biology

Asian Journal of Biology, 2456-7124,Vol.: 2, Issue.: 3


Bio-insecticidal and Grain Protectant Activities of Mixed Powder of Ocimum gratissimum and Vernonia amydalina against Callosobruchus maculatus (Coleoptera: Bruchidae) in Calabar, Nigeria


A. I. Nta1, B. E. Agbo2* and N. S. Udoekong3

1Department of Zoology and Environmental Biology, University of Calabar, Calabar, Nigeria.

2Department of Microbiology, University of Calabar, Calabar, Nigeria.

3Department of Science and Technology, Akwa Ibom State Polytechnic, Ikot Osurua, Ikot Ekpene, Akwa Ibom State, Nigeria.


Article Information
(1) Xing Li, Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic College of Medicine, USA.
(1) Shravan M Haldhar, Central Institute for Arid Horticulture, Bikaner, India.
(2) Adriana Neske, Universidad Nacional de Tucuman, Argentina.
Complete Peer review History: http://www.sciencedomain.org/review-history/19070




The bio-insecticidal and grain protectant activities of mixed powder of Ocimum gratissimum and Vernonia amygdalina upon Callosobruchus maculatus was carried out in Calabar, Nigeria during the dry season (August to November) of 2015. The mortality rate of cowpea weevil treated V. amygdalina: O. gratissimum at 100: 0 concentrations were 17.0%, 27.0%, and 47.0% for a period of 24hrs, 48hrs and 72hrs, respectively. Concentrations 0:100 gave a percentage mortality of 47.0%, 67.0% and 73.0% at 24hrs, 48hrs and 72hrs, respectively. 80: 20 and 20: 80 concentrations gave 33.3% and 47.0% at 24hrs and 48hrs, but 80:20 gave 47.0% while 20:80 gave 57.0% mortality rate at 72hrs. 50: 50 concentrations gave 73.0%, 77.0%, and 80.0% mortality rate at 24hrs, 48hrs and 72hrs, respectively. The 0: 0 concentrations gave 0.0%, 3.3%, and 7.0% mortality rate at 24hrs, 48hrs and 72hrs, respectively. The effect on the oviposition of cowpea weevil revealed that the mean value of eggs laid on seeds were 5.0, 2.3, 3.3, 2.8, 1.0 and 7.0 for 100:0; 0:100; 80:20; 20:80; 50:50 and 0:0 concentrations, respectively. The effects of mixture of V. amygdalina: O. gratissimum powder on the emergence of cowpea weevil gave a mean value of adult weevil emergence as 5.3, 3.0, 5.0, 3.3, 1.3 and 8.0 for 100:0, 0:100, 80:20, 20:80, 50:50 and 0:0 concentrations respectively. Mixed powder of V. amygdalina: O. grattisimun with 50:50% concentrations conferred the highest bio-insecticidal potency against C. macullatus during the experimental investigation. This was evident from the fact that treatment with V. amygdalina: O. grattisimum (50:50%) concentration attained 80.0% mortality at 72hrs of exposure, which was followed by V. amygdalina: O. grattisimum (0: 100%) concentration with 73.0% mortality.


Keywords :

Bio-insecticidal; oviposition; Vernonia amygdalina; Ocimum gratissimum; ovicidal; Callosobruchus maculates.


Full Article - PDF    Page 1-7    Article Metrics


DOI : 10.9734/AJOB/2017/33500

Review History    Comments

Search this site

Advanced Search

Announcement & News

ISI Thomson Reuters selected British Journal of Pharmaceutical Research for Emerging Sources Citation Index

We are delighted to inform that ISI Thomson Reuters selected British Journal of Pharmaceutical Resea...

SCOPUS selected Annual Research & Review in Biology (ARRB)

We are delighted to inform that famous indexing organization SCOPUS (from Elsevier) selected  A...

Index Copernicus Evaluation Result Released

We are delighted to inform that Index Copernicus (a leading indexing organization from Pol...

Journal Repository (JR): Permanent Digital Archiving of SDI journals

SDI is happy to announce that all our journals are now permanently archived in Journal Repository (J...

SDI journal got 35th ranking in Publons

We are delighted to announce (as of 04/01/2016) that British Journal of Medicine and Medical Re...

Growth of SDI and world publication market

As of 2014, total 25,064 journals are competing in World market of journal publication. In 2011, tot...

Science (IF: 31) report confirmed the high standard of SDI journal

As per a recent report (Link) of Science journal (present Impact factor 31), one of our journal (Bri...

SDI introduced Post-publication peer review by its comment section

SDI journals encourage Post-publication peer review by its comment section   Policy details a...

SDI promotes transparent Advanced OPEN peer review

We have migrated to transparent and toughest ‘Advanced OPEN peer review’ system (...


  • No Awards listed.

Browser Compatibility : Mozila firefox, Google Crome and IE 7 & above. Creative Commons License Terms & Condition   |   Privacy Policy   |   Join Us   |   Help   |   Contact Us
© Copyright 2010-2018, SCIENCEDOMAIN international. All rights reserved.