Callistus I. Iheme

Evaluation of Combined Effect of Ocimum gratissimum and Ageratum conyzoides Leaf Powder as a Sustainable Bioinsecticide against Cowpea Weevil

Victor C. Ihebom, Cosmas O. Ujowundu, Callistus I. Iheme, Favour N, Ujowundu, Christopher O. Echereobia, Ngozi U. Nwogwugwu, Adaeze A. Nwakaudu, Margaret N. Ibe, Raymond C. Ibeh, Linus O. Agwu, Kingsley U. Obasi & Emmanuel C. Okwara · Asian Journal of Research in Biochemistry · 2025

This study was conceived to improve the preservation of cowpea grains by eliminating the destruction of cowpea grains by cowpea weevils (Callosohruchus maculates) and to eliminate the detrimental effect of synthetic pesticide on the environment. This study evaluated the proximate...

Open access Research Article 10.9734/ajrb/2025/v15i6442

Effect of Sublethal Concentration of Heavy Metal Contamination on Soil Physicochemical Properties, Catalase and Dehydrogenase Activities

Linus A. Nwaogu, Cosmas O. Ujowundu, Callistus I. Iheme, Tobias N. I. Ezejiofor & Donatus C. Belonwu · International Journal of Biochemistry Research & Review · 2014

The effect of sublethal contaminations (100 mg/dm3) of heavy metals such as mercury (Hg), lead (Pb) and cadmium (Cd) on soil enzyme and physicochemical properties was investigated after one hundred and twenty days. Soil sample without heavy metal contamination served as the contr...

Open access Research Article 10.9734/IJBCRR/2014/6341