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Jacqueline Scheepmaker

Jacqueline Scheepmaker
Inspection for the Living Environment and Transport (ILT)

PhD

About

22
Publications
5,386
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360
Citations

Publications

Publications (22)
Article
Plant protection products with active micro-organisms are allegedly less hazardous to the environment and wildlife than synthetic chemical pesticides. Nevertheless, they need a proper pre-marketing environmental safety evaluation because of their potential toxicity and pathogenicity. Scientific and technical guidance on such a safety evaluation for...
Article
Full-text available
Entomopathogenic fungi being developed as biological control agents (BCAs) may have the potential to spread and become established in the environment. For registration purposes, the risks concerning their persistence have to be evaluated according to EU legislation which requires the decline of BCAs to acceptable background levels unless related ri...
Article
Full-text available
Microbial control agents (MCAs) are promising for use in sustainable agriculture. Nevertheless, they face a major hurdle in the registration process of the European Union, one reason being unclear data requirements on me-tabolites. This review examines the EU regulatory perspective on metabolites of MCAs for plant protection and identifies some key...
Technical Report
Full-text available
Fungal and bacterial-based plant protection products are used in agricultural crops, such as maize and wheat. The main criterion looked at when risk assessments are carried out on these ‘microbial plant protection products’ is whether the micro-organisms concerned can grow on the outside of plants. It has, however, recently become apparent tha...
Technical Report
Full-text available
In the future, genetically modified micro-organisms may offer an alternative to chemical plant protection products. Micro-organisms can be genetically altered to add or enhance certain properties, giving them a wider range of application than regular microbial products. The Bacillus thuringiensis bacterium, for instance, can be modified to produce...
Technical Report
Full-text available
Inventory on the potential import of non-authorized genetically modified ornamentals in the Netherlands RIVM Letter Report 300003004/2014 J.W.A. Scheepmaker
Article
Full-text available
Our aim was to investigate the non-target effects on soil micro-organisms in agricultural environments caused by chemical control agents (CCAs) and microbial biocontrol agents (mBCAs), including the recovery from these effects. This was a desk study in which quantifiable endpoints, such as numbers of colony forming units (CFU), were derived from a...
Article
The nematode Steinernema feltiae (Nematoda: Steinemematidae) was tested for its ability to control two main mushroom pests i.e. the sciarid Lycoriella auripila (Diptera: Sciaridae) and the phorid Megaselia halterata (Diptera: Phoridae) in growing-rooms filled with spawned compost. A clear difference between female and male sciarid control was obser...
Data
The insect pathogenic nematode Steinernema feltiae (Nematoda: Steinernematidae) was shown to offer an alternative to the use of diflubenzuron for the control of the mushroom fly Lycoriella auripila (Diptera: Sciaridae). The influence of diflubenzuron and S. feltiae treatments on the yield and numbers of the mushroom, Agaricus bisporus, was studied...
Article
Full-text available
The efficacy of different species of entomopathogenic nematodes was tested against larvae of the mushroom phorid Megaselia halterata (Diptera: Phoridae) and the mushroom sciarid Lycoriella auripila (Diptera: Sciaridae). Sciarid larvae originating from infestations in casing soil during colonization by Agaricus bisporus were almost completely contro...
Article
Full-text available
Bioassays were initially conducted in Petri-dishes to screen the efficacy of four Heterorhabiditis and Steinernema species against the mushroom phorid Megaselia halterata. Control rates of 61 to 70% control were obtained at a dosage of 1500 infective juveniles (IJs) per 30 larvae. In order to avoid stress-induced susceptibility, an improved bioassa...
Article
Experiments were conducted to examine the location of oviposition by the phorid fly Megaselia halterata (Wood) (Diptera: Phoridae) in uncased and cased compost. Clearly, a majority of the gravid females choose oviposition sites directly after entering the top layer of the compost. In uncased compost, 60% of all adults emerged from the top of four c...
Data
Full-text available
The insect pathogenic nematode Steinernema feltiae (Nematoda: Steinernematidae) was shown to offer an alternative to the use of diflubenzuron for the control of the mushroom fly Lycoriella auripila (Diptera: Sciaridae). The influence of diflubenzuron and S. feltiae treatments on the yield and numbers of the mushroom, Agaricus bisporus, was studied....
Article
Pasteurized, spawned, full-grown and immediately-cased full-grown compost were simultaneously exposed to natural populations of the mushroom pests Lycoriella auripila (Winnertz) (Diptera: Sciaridae) and Megaselia halterata (Wood) (Diptera: Phoridae). Different numbers of adults emerged from each of these composts. Highest numbers of L. auripila eme...
Article
Full-text available
Pasteurized, spawned, full-grown and immediately-cased full-grown compost were simultaneously exposed to natural populations of the mushroom pests Lycoriella auripila (Winnertz) (Diptera: Sciaridae) and Megaselia halterata (Wood) (Diptera: Phoridae). Different numbers of adults emerged from each of these composts. Highest numbers of L. auripila eme...

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