Effect
No effect on drought stress tolerance
No effect on nitrogen N use efficiency
No effect on produce quality
Kelpak treated Surfinia, Surfinia White, grown in peat-based substrate in reduced water and nitrogen conditions had 2.7 % less branches, 1.8 % shorter branches, 20 % more flowers (only determined at -20 % reductions), 2.5 % less fresh weight, -2.1 % less dry weight, 1.3 % less root development, a 1 % higher chlorophyll-index, a 9 % lower flavonol-index, a 34.4 % higher anthocyanin-index and a 11.7 % higher stomatal conductance compared to the untreated control grown in the same reduced conditions. No significant effects.
Trial details
Indoor, greenhouse, peat-based substrate, drought conditions (20 % or 40 % less irrigation) and reduced nitrogen (-20 % or -40%)
Belgium
Crop
Surfinia, Petunia x hydrida
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
2019-2020
Bio4safe trial report Surfinia 2019-2020
Crop group
