EXPERIMENTS WITH ROSES IN DIFFERENT SYSTEMS OF RECIRCULATING NUTRIENT SOLUTION AND DIFFERENT GROWING MEDIA

Roses were grown in three different systems of recirculating nutrient solution: (1) in plastic channels with a nutrient film, (2) on 5 cm stonewool (Grodan) and (3) on filter mat (Vatex). The plants were potted in Grodan, peat, peat:bark (3:1) and peat:bark (1:3). In comparison with these systems roses were grown conventionally using 4 different media: peat, peat:bark (3:1), peat:bark (1:3) and bark.

In the first growing season the yield obtained in recirculating nutrient solution was as on an average 25% higher than that obtained in the conventional way of growing.
It was little difference in yield between the 3 systems of recirculating nutrient solution.
The second season, up to the end of June, the yield was larger in channels and on Grodan than on Vatex.

When comparing the different potting media the largest yield was obtained in peat and peat:bark (3:1) the first year.
In the first part of the second season the yield was largest in Grodan.

Symposium on Production of Protected Crops in Peat and other Media

H.R. Gislerød

https://doi.org/10.17660/ActaHortic.1978.82.12