Results

The research started on March 3rd 2018. With better climate control indoor, both productivity and quality can be improved indoor compared to raspberries grown in greenhouses or open fields. Following the results of this first research, up to 78% averagely higher yield can be achieved over a 19-week production cycle (9 weeks of vegetative growth and 10 weeks of harvest), which is contributed to a longer production period and a higher light use efficiency. However, it should be noticed that raspberries grown indoor is very cultivar-dependent. In further research, an improved trellising system and interlighting will be used to increase the fruit production and quality.

Cultivation information

Breed: Three different varieties (Tulameen, Glen Ample and Lagorai) were placed on three gutters in a mixed floor setup.

Propagation: All plants are propagated by Van Den Elzen Plants on an open field as double cane plants and stored in a cooled facility. The plants have had one preventive pesticide treatment on arrival in the facility. Delphy provided advice and guidance on the crop cultivation.

Density: On actual floor surface: on the left and right gutter 5,5 canes/m² and on the middle gutter 3,8 canes/m².

Lighting: Water-cooled LED fixtures were used, with a HPI type daylight spectrum.

Cultivation time course:
Planting date: week 14
First harvest: week 24
End of cultivation: week 33