Effect
No effect on drought stress tolerance
No effect on produce quality
Kelpak treated Hydrangea, cv. Phantom, grown in a peat-based substrate in drought stress conditions had 1% shorter branches, 9 % less branches, 3 % less fresh weight, 2 % less dry weight, a 3 % better root development, a 7.3 %higher chlorophyll-index, a 27 % lower flavonol-index, a 29.4 % lower anthocyanin-index and a 18 % higher stomatal conductance compared to the untreated control grown in the same conditions. No significant effects.
Trial details
Indoor, greenhouse, peat based substrate, drought conditions (20 % less irrigation)
Belgium
Crop
Hydrangea, Hydrangea paniculata
Trial application
Method
Foliar spray
Timing
First application: 7-10 days after planting; repeated at 14-21 day interval up to 4 applications
Rate
2.5 L/ha
2019
Bio4safe trial report Hydrangea 2019
Crop group
