Leaching of contaminants from the vadose zone to the groundwater depends on the soil properties and the infiltration rate. In this thesis, organic degradable contaminants were studied, such as de-icing chemicals (consisting of propylene glycol, PG) and pesticides. Heterogeneous soil properties lead to spatial variability in leaching, which is parti...
The necrotrophic fungal plant pathogenBotrytis cinerea is able to infect over 200 host plants and cause severe damage to crops, both pre- and post-harvest. B. cinerea often penetrates host leaf tissue at the anticlinal cell wall and subsequently grows into and through the middle lamella, which consists mostly of low-methylesterified pectin. Effecti...
We all use plastics on a daily basis. Plastics come in many shapes, sizes and compositions and are used in a wide variety of products. Almost all of the currently used plastic packaging are made from fossil resources, which are finite. The production of plastic packages causes environmental impacts, whereas the correct use of these packages will re...
In this thesis, the degradation of dietary fibres in the gastrointestinal tract, especially in the large intestine, is monitored using in vitroand in vivostudies. First, an in vitromethod to simulate the conditions in the mouth, stomach and small intestine was adapted for food products, which were used in an in vivosatiation study as well. Alginate...
The molecular composition of organic matter in peatlands reflects local conditions and stores information about botanical composition (plant source) as well as the degree of and conditions during decomposition. A reliable hydrological (and hence palaeoclimatological) interpretation of source and decomposition proxies in peatlands requires the unde...
This manual describes the PEARLNEQ v5 software package . This package can estimate long-term sorption parameters using results of aged-sorption studies with soil, using a submodel for sorption and transformation that is identical to the submodel used for that purpose in the FOCUS_PEARL v3.3.3. The submodel assumes two types of sorption sites: equil...
This paper gives an overview of available literature data on ammonia volatilization from crop residues. From these data, a relation is derived for the ammonia emission depending on the N-content of crop residue.
Catchment wide integrated basin management requires knowledge on cause-effect and recovery chains within water bodies as well as on the interactions between water bodies and categories. In the WISER WP6.4 recovery processes in rivers, lakes and estuarine and coastal waters were evaluated. The major objectives were: - to analyse and compare (cause-e...
In 2006 is door de Europese Commissie een Kaderrichtlijn Bodem voorgesteld. In dit rapport wordt onderzocht wat de gevolgen van het voorstel voor Nederland zouden zijn voor landbouwgronden. Drie processen van bodemdegradatie zijn in dit verband relevant: winderosie, afbraak van veen en ondergrondverdichting. Van deze processen wordt onderzocht welk...
