Evaluation of the Efficacy of Some Pesticides and Plant Extracts in Controlling the Adults of Southern Cowpea Beetle, Callosobruchus maculatus Under Laboratory Conditions
I.Z.A. Kashmar* and M.T. Mohammadali
Faculty of Agriculture, University of Karbalaa, Iraq. *Email address pf corresponding author: iqbal.z@s.uokerbala.edu.iq
Received: 10/4/2023; Accepted: 17/6/2023
https://doi.org/10.22268/AJPP-001228
Abstract
The aim of the study was to evaluate the efficacy of Coragen, Oxymatrine, and the fruits extracts of black pepper, Piper nigrum and leaves of Eucalyptus camaldulenses against adults of the southern cowpea beetle, Callosobruchus maculatus, under laboratory conditions. The results obtained showed that the use of Coragen, achieved the highest mortality rates of 80.08, 83.24, and 95.00% at concentrations of 0.10, 0.15, and 0.20 ml/L, respectively, 7 days after treatment, as compared to Oxymatrine, which caused a mortality rate of 70.00, 79.83, and 88.58%, respectively, at the same concentrations and after the same time period. Plant extract results showed that the essential oil extract of black pepper fruits caused the highest mortality rate of adult insects at a concentration of 3 ml per liter, achieving 75.00% mortality, compared to the treatment of eucalyptus extract, which achieved 63.61% insect mortality, 7 days after treatment.
Keywords
Oxymatrine, coragen, Callosobruchus maculatus, Pipper nigrum, Eucalyptus camaldulense, plant extracts.