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In this phase, the crop’s production rate is high and overlaps with Summer and Winter conditions. It is important to continue to steer towards a good balance between foliage surface area and flower production all year round. This resulted in an increase in the number of harvest points and the growth speed, appropriate to the desired quality of the branches. The high level of crop transpiration in the Summer gives cause to the need for optimum water uptake in that period. However, a crop that is growing well and is sufficiently cooled by transpiration can often exhibit an exceptional performance in such a period.

On days with high levels of incident solar radiation, there is a need for a high uptake of water and nutrients during this cultivation phase: the water uptake is particularly high during the extreme hours around the middle of the day. Both the watering and water buffer in the substrate volume are of essential importance to the availability of water and, consequently, to the crop’s uptake of water. A root system distributed evenly throughout the substrate is able to take up more water and nutrients, and this is in turn beneficial to the transpiration from and cooling of the crop. Besides the provision of sufficient water for maximum uptake, it is important that the roots are kept healthy by modifying the watering regime in good time in response to changes in the weather. In the Winter period, it is important to encourage sufficient root development by delaying the commencement of watering until later in the morning and by administering larger volumes of water each time.


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