Effect
Increased produce quality
Fulcrum treated Birch grown in usual conditions had on average a 25.6 % larger girth, 64.2 % more leaf dry weight, 68.1 % more shoot dry weight, 11.2 % larger roots, 33.7 % more root dry weight, a 27.8 % bigger root area and 5.2 % 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 significant)
Trial details
outdoor, unprotected, general tree compost in 5 L pots, no NPK fertilisers during trial
Scotland
Crop
Birch, Betula pendula
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
