Effect
No effect on nitrogen N use efficiency
No effect on produce quality
Kelpak treated Surfinia, Surfinia White, grown in a peat-based substrate in reduced nitrogen conditions had 2 % more branches, 7 % longer branches (sign), 23 % more flowers, 7 % more fresh weight, 5 % more dry weight, a 13 % better root development, a 8.9 % lower chlorophyll-index, a 24.2 % higher flavonol-index, a 3 % lower anthocyanin-index compared to the untreated control grown in the same conditions.
Trial details
Indoor, greenhouse, peat-based susbstrate, reduced nitrogen (-20 %)
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
Bio4safe trial report Surfinia 2019
Crop group
