The of industrial production are generally cultivated above ground in vast greenhouses or tunnels of several hectares, in the southern parts of France, in Brittany and in northern countries like the Netherlands and Belgium.
Above ground crops are grown in rows covered . Their development is fully programmed, including a diet, totally artificial, a mixture of water and fertilizer. The nutrient solution used is provided by a continuous drip, or at close , to fill the little reserve of the . This solution is fully adapted to the needs of the plant.
Glass wool, sand
In some hot desert regions, such as in Israel for example, the same principles of cultivation are practiced, the being replaced by . This allows the production period to be extended considerably by heating in winter.
Of course, in greenhouses, it is necessary to promote fruit set, the latter being the initial phase of the . This is the moment when the of the flower turns into fruit after . The yield depends on this stage thanks to a good , the latter, following a lack of , can be obtained by vibrating the plants to promote the dispersion of .
Aboveground culture and pests
Of course, tomato producers producing must also control any parasitic attacks.
Thus they develop in their greenhouses, for example, breeding a useful of the family Hymenoptera, Encarsia formosa , able to effectively fight dangerous , . This is a biological control technique that is very effective.