Performance and environmental studies with storm Flocoumafen block baits in ricefields in the Philippines

Hoque M.M., . and Olvida J.L., . and Jones R.G., . (1990) Performance and environmental studies with storm Flocoumafen block baits in ricefields in the Philippines. [Proceedings Paper]

The two essential features demanded of any new rodenticide and their performance and safety to humans domestic animals and wildlife. Numerous studies have been carried out to determine the efficacy of Shell's new anticoagulant rodenticide flocoumanfen as measured by its toxicity including effect on resistant strains and palatability. The environmental hazard imposed by a rodenticide is determined not only by the toxicity of the active ingredient to non-target wildlife but also their exposure to it. As with efficacy toxicity can be determined in laboratory tests but both performance and exposure can best be assessed during trials simulating real use. In large-scale trials pulse baiting with Storm block baits 0.05 percent flocoumafen in ricefields and adjacent village housing in the Philippines very effective rodent control was achieved using on a average only 1.175 kg/ha/season. In addition the environmental impact of the treatment was negligible. Few domestic animals were attracted to the block bait and no domestic or wildlife casualties were reported even after extensive carcass searching. The total residues of flocoumafen in the ricefield rats also indicated a low secondary hazard. Residues were highest shortly 2 days after baiting mean 0.36 mg/kg falling to below 0.03 mg/kg 10-25 days after baiting. Although additional studies in the Philippines and elsewhere are continuing these results clearly show that when used as directed an advanced and well formulated rodenticide can give cost-effective rodent control with minimal environmental impact

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Abstract

The two essential features demanded of any new rodenticide and their performance and safety to humans domestic animals and wildlife. Numerous studies have been carried out to determine the efficacy of Shell's new anticoagulant rodenticide flocoumanfen as measured by its toxicity including effect on resistant strains and palatability. The environmental hazard imposed by a rodenticide is determined not only by the toxicity of the active ingredient to non-target wildlife but also their exposure to it. As with efficacy toxicity can be determined in laboratory tests but both performance and exposure can best be assessed during trials simulating real use. In large-scale trials pulse baiting with Storm block baits 0.05 percent flocoumafen in ricefields and adjacent village housing in the Philippines very effective rodent control was achieved using on a average only 1.175 kg/ha/season. In addition the environmental impact of the treatment was negligible. Few domestic animals were attracted to the block bait and no domestic or wildlife casualties were reported even after extensive carcass searching. The total residues of flocoumafen in the ricefield rats also indicated a low secondary hazard. Residues were highest shortly 2 days after baiting mean 0.36 mg/kg falling to below 0.03 mg/kg 10-25 days after baiting. Although additional studies in the Philippines and elsewhere are continuing these results clearly show that when used as directed an advanced and well formulated rodenticide can give cost-effective rodent control with minimal environmental impact

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Item Type:	Proceedings Paper
Additional Information:	Summary only
AGROVOC Term:	ORYZA
AGROVOC Term:	RODENTICIDAS
AGROVOC Term:	FILIPINAS/ CONTROL DE ROEDORES
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:26
URI:	http://webagris.upm.edu.my/id/eprint/15285

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