Effect
No effect on produce quality
Roots treated Washington Hawthorn, grown in optimal conditions or without irrigation or fertilization, weren't taller, didn't have a larger stem diameter or more top dry biomass, but they had 7 % longer roots compared to the untreated control trees.
Trial details
outdoor, unprotected, soil grown, optimal conditions or without fertilizers/irrigation or without both
USA
Crop
Washington hawthorn, Crataegus phaenopyrum Hara
Trial application
Method
Root soak
Timing
Before planting
Rate
20 mL/L; soaking for 30 mi
1998
Biostimulants and Soil Amendments Affect Two-year Posttransplant Growth of Red Maple and Washington Hawthorn
HortScience
33
819-822
Crop group
