An accurate quantity and good quality of the water for the supply of the crop is vital for the course of the cultivation. The availability of clean water therefore requires special attention, whereby it is determined on the basis of a water analysis which preliminary treatments are necessary. In order to obtain pure and disinfected water, water treatment systems are available that sterilise the water and remove a surplus of iron and/or manganese. However, these systems are expensive and therefore greatly affect the operation budget of the project.
Various water systems are available for the various types of cultivation.
In substrate cultivation, irrigation water is ameliorated in fertilizer mixing units. The advantage of this system is that the pH degree can be controlled accurately.
The composed water is brought to the plant via pressure-compensated drippers or tidal floors.
With organic and open-ground cultivation the water emission is arranged through a top-dripping system or a drip system, whereby a simple pump unit suffices.
A large water supply is essential to guarantee the continuity in the water emission. Possibilities of storage are water storage silos, water basins or underground water storage.