Projects per year
Abstract
The aim of this thesis was to evaluate the protectiveness of the pesticide registration procedure used in Ghana and its enforcement. This included performing the environmental risk assessment of pesticides registered in Ghana to evaluate the possible harm they may pose to the aquatic and terrestrial environments, and assessed whether prevailing use in Ghana exceeds recommended rates. Ghana’s pesticide law was reviewed bringing on board the role of state and non-state actors in the overall pesticide life cycle. Farmers’ pesticide use data was used with risk assessment models, DNA extraction and 16S ribosomal RNA (rRNA) gene sequencing, physico-chemical parameters and laboratory analysis to determine which pesticides posed risk to the environmental compartments. The study concludes that pesticides are registered in compliance with the law whilst non state actors were mostly non-compliant with pesticide handling and management which is likely to result in environmental risks. The ecological risk assessment models estimated that pesticides used in the study area were likely to pose the highest risks to aquatic ecosystems adjacent to the treated fields and to the terrestrial ecosystem. It was established that actual pesticide use was higher than the recommended rates and it has been recommended that the Pesticides Risks in the Tropics to Man, Environment, and Trade (PRIMET) and species sensitivity distribution (SSD) models are incorporated into the pesticide registration processes in Ghana.
Original language | English |
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Qualification | Doctor of Philosophy |
Awarding Institution |
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Supervisors/Advisors |
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Award date | 11 Jun 2020 |
Place of Publication | Wageningen |
Publisher | |
Print ISBNs | 9789463953627 |
DOIs | |
Publication status | Published - 11 Jun 2020 |
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Dive into the research topics of 'Pesticide-induced environmental risks: a field study in Ghana'. Together they form a unique fingerprint.Projects
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Post-registration monitoring of pesticide-induced environmental and human health risks in Ghana
Onwona-Kwakye, M. (PhD candidate) & van den Brink, P. (Promotor)
1/09/12 → 11/06/20
Project: PhD