However, the efficient system of distribution through the auctions provides growers with maximum opportunity for specialization. The drawback to specialization is that it complicates the control of soil diseases. A method to prevent these diseases that has become more and more popular over the years is heating the soil in greenhouses. Heating, moreover, renders the use of chemical products superfluous. For a number of crops substrate cultivation proved an alternative to heating as a method to prevent demage caused by soil organisms.
Specialization also has two clear advantages.
First, the grower's expertise improves as he will have to focus on one product only. Specialization therefor results in high levels of production and quality. Methods Effective watering methods are essential when growing plants in pots and containers. The water retention is limited and, particularly in summer, plants may need to be watered several times a day. A 'tidal system' has been developed for this purpose so that pots periodically stand in a few centimetres of water, allowing them to absorb as much as possible.