Effect
Increased produce quality
Decreased produce quality
Crop Set treated Beech grown in usual conditions had on average a 4.1 % larger girth, 5.4 % more leaf dry weight, 3.5 % less shoot dry weight, 0.3 % larger roots, 11.3 % more root dry weight, a 5.5 % smaller root area and 6.8 % more chlorophyll compared to the untreated control. (Numbers are averages of different application methods and harvest moments (8 and 20 weeks after treatment); differences most of time not significant)
Trial details
outdoor, unprotected, general tree compost in 5 L pots, no NPK fertilisers during trial
Scotland
Crop
Beech, Fagus sylvatica
Trial application
Method
Foliar spray or root drench
Timing
Post transplanting when trees were in full leaf
Rate
12.5 mL/L water
2003
The influence of biostimulants on growth and vitality of tree urban tree species following transplanting
Arboricultural Journal
27
43-57
Crop group
