Effect
No effect on produce quality
Siliforce treated Apple trees, cv. Red Jonathan, grown in an organic orchard, had no difference in leaf area (+5.8%), no difference in yield (+6.2%), no difference in number of fruits per tree (+3.7%), no difference in fruit weight (+1%), no difference in fruit diameter (+2.6%), fruits had no difference in titratable acidity (+8%), no difference in color index (+26.3%), no difference in total anthocyanin content (+35.3%) and no difference in ascorbic acid in the pulp (+11.2%), compared to the untreated control.
Trial details
outdoor, unprotected, soil-grown, organic orchard, standard horticultural cares
Italy
Crop
Apple, Malus x domestica
Trial application
Method
Foliar spray
Timing
First application 40 days after full bloom (end May), followed by a weekly treatment until the end of August
Rate
300 mL/ha
2018
Use of biostimulants for Organic Apple production: effects on tree growth, yield, and fruit quality at harvest and during storage
Frontiers in Plant Science
9
1-17
Crop group
