Greenhouse horticulture (2009)
Greenhouse cultivation has a long history and it is difficult to appoint where the first greenhouse was built. Such an appointment directly is hindered by a good definition of a greenhouse. However,...
Fertilizers and soil improvers (2009)
In greenhouse industry fertilizers as well as soil improvers are widely used. Fertilizers are mainly applied to optimize the physical-chemical conditions of the root environment and are used for...
The characteristics of the soil solution in the root environment in the greenhouse industry differ much from those for field grown crops. This is caused firstly by the growing conditions in the...
Soil and substrate testing to estimate nutrient availability and salinity status (2009)
In the greenhouse industry methods have been developed for the determination of the nutrient availability and salinity status of soils and substrates. As in other agriculture branches, soil testing...
Tissue tests are widely used in horticulture practice and have in comparison with soil or substrate testing advantages as well disadvantages in comparison with soil testing. One of the main...
Water uptake and water supply (2009)
The water uptake and the water supply do not directly affect the mineral absorption of plants. However, many connections exist between the management of minerals and water. The most evident of those...
Salinity and water quality (2009)
The impact of salinity on greenhouse grown crops, especially when grown in substrate systems, differs from the impact of salinity on crops grown under field conditions. The most striking difference...
Crop response to an unequal distribution of ions in space and time (2009)
Nutrient and salt ions often are unequally distributed in the root environment of plants and it will be expected that this strongly affect the plant reaction on the uptake of minerals and the osmotic...
Calcium nutrition and climatic conditions (2009)
The climatic conditions are one of the most striking differences between the growing conditions of field crops and those of protected crops, especially in the moderate climate zones. The increased...
Chemical effects of disinfestation (2009)
In the greenhouse industry disinfestation is performed with soil as well with soilless cultures by various methods. The aim of this is the control of plant pathogens surviving in the root zone...
Substrates: Chemical characteristics and preparation (2009)
In this chapter the characteristics of substrates will be discussed with respect to their effects on plant nutrition. Therefore, the chemical composition will be taken into account in the first...
Nutrient solutions for soilless cultures (2009)
Nutrient solutions intended for plant growth are already used from the middle of the 19th century, when the importance of mineral elements for plant growth was made clear by Justus von Liebig. In...
Nutrient management in substrate systems (2009)
Speaking about nutrient solutions in soilless cultivation, different solutions can be discerned. Originally, in soilless culture only one nutrient solution was taken into account, being the solution...
Fertigation in soil grown crops (2009)
The word fertigation is derived by a composition from the words fertilization and irrigation and the action expressed by it is exactly what the word suggests: fertilization and irrigation in one...
Nutrient management of soil grown crops (2009)
The management of the fertilization of soil grown crops in greenhouses can be distinguished in the addition of fertilizers before cultivation, the base dressing and those added during the...
Plant nutrition in future greenhouse production (2009)
In the introduction chapter it was claimed that greenhouse production has no longer arguments as a supply market. The products of the greenhouse industry became in free competition with those from...
Fertigation management of potted plants (2009)
The horticultural crops considered in this chapter are characterised by the fact that the plants are grown in a restricted volume, like pots, containers, plastic trays or compressed peat blocks. In...
In 1974 the 1:1½ volume extract was published (Sonneveld et al., 1974) as a water extraction method for the determination of available nutrient elements and of the salinity status of peaty...
The effects of Fe-chelate type and PH on substrate grown roses (2009)
Substrate grown roses appear to be susceptible to chlorosis, which indicates problems with Fe or Mn uptake and hence yield reduction. In common practice this problem is often treated by the addition...
Wilgenteelt op baggerspecie : energiewinning uit afval en biomassa (EWAB) (2004)
Vermeulen, G.D., Huijsmans, J.F.M., Harmsen, J., Sonneveld, C.
Experiment and modelling of parameters influencing natural wind drying of willow chunks (2004)
The objective of this study was to investigate the parameters that govern the drying process of willow chunks. Indicative chunk drying trials were conducted to assess the potential of natural wind...
Wilgenteelt op baggerspecie; energiewinning uit afval en biomassa (EWAB) (2004)
Vermeulen, G.D., Huijsmans, J.F.M., Harmsen, J., Sonneveld, C.
Experiment and modelling of parameters influencing natural wind drying of willow chunks (2004)
The objective of this study was to investigate the parameters that govern the drying process of willow chunks. Indicative chunk drying trials were conducted to assess the potential of natural wind...
In a series of experiments with different osmotic potentials in the root environment, various vegetables, and ornamentals were grown in a substrate system. The osmotic potential was varied by...
Oordeel Slapdük spuitsysteem positief : onderzoek (2003)
Sonneveld, C., Michielsen, J.M.
De Werkgroep Driftreductie van de Commissie Vaktechniek Akkerbouw (LTO) verwacht een behoorlijke driftreductie met het Zweedse Slapdük spuitsysteem. De eerste proeven in aardappelen, suikerbieten en...
Natural wind drying of willow stems (2000)
Gigler, J.K., Sonneveld, C., Meerdink, G.
The process of natural wind drying of willow (Salix viminalis) stems in large piles was investigated. A simple drying model was developed for stems. Large-scale drying experiments were conducted and...
Effects of salinity on substrate grown vegetables and ornamentals in greenhouse horticulture (2000)
http://library.wur.nl/wda/abstracts/ab2765.html
"Stellingen" inserted.
Kansen voor energie uit biomassa! : Resultaten van een 4 jarig DLO-Onderzoekprogramma (1999)
Gigler, J.K., Annevelink, E., Huisman, W., Breteler, H., Evers, E., ...
Mogelijkheden voor kleinschalige energie opwekking met geteelde biomassa. (1996)
Coelman, B.T., Pijanowska, B., Kasper, G.J., Gigler, J.K., Sonneveld, C., Huisman, W., ...
Mineral balance of young tomato plants grown on nutrient solution (1996)
Heinen, M., Sonneveld, C., Voogt, W., Baas, R., Keltjens, W.G., Veen, B.W.
Mogelijkheden voor kleinschalige energie-opwekking met geteelde biomassa (1996)
Coelman, B.T., Pijanowska, B., Kasper, G.J., Gigler, J.K., Sonneveld, C., Huisman, W., ...