From Taiye Joseph, Ilorin
A lecturer in the Department of Crop and Environmental Protection at Ladoke Akintola University of Technology (LAUTECH), Dr. Adeola Odewole, has called on Nigerian farmers to embrace plant extracts as environmentally friendly alternatives to chemical insecticides.
Speaking with journalists in Ilorin, Dr. Odewole, highlighted the benefits of plant-based pest control methods, describing them as sustainable, biodegradable, and free from harmful residues that often threaten human health and the environment.
“Plant extracts have shown significant promise as alternatives to synthetic insecticides. These extracts are environmentally sustainable, biodegradable, and leave no harmful residues in soil, water, or food,” she said.
She identified plants such as ginger, sunflower, fish bean, African black pepper, cloves, and citrus as potent natural pesticides, adding that they are cost-effective and accessible to smallholder farmers across the country.
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Dr. Odewole expressed concern over the widespread use of chemical insecticides on vegetables like cucumber, okra, cabbage, and amaranths, warning that improper application could harm farmers, consumers, and the environment.
“This indiscriminate usage has resulted in environmental pollution, food contamination, health risks for farmers and consumers, and the emergence of pesticide-resistant pests,” she noted.
Citing a study conducted on cucumber samples from five local government areas in Ogbomoso, she revealed that pesticide residues found in the vegetables exceeded the European Union Maximum Residue Limits (EU MRLs), posing severe health risks.
“Both farmers and consumers are exposed to chemical residues, which degrade ecosystems and harm pollinators essential for crop production,” Dr. Odewole added, listing potential health implications such as skin disorders, respiratory illnesses, and long-term complications.
Dr. Odewole urged policymakers to regulate the excessive use of chemical insecticides while promoting sustainable pest management practices. She also called on agricultural extension officers and organisations to train farmers in adopting eco-friendly pest control techniques.
“Scientists must continue to research and validate innovative solutions and empower farmers with knowledge and tools for transforming pest control practices and achieving long-term agricultural sustainability,” she emphasised.
She concluded by stressing that adopting safer pest management methods would protect public health, preserve the environment, and enhance food security in Nigeria.
