Effect
Increased produce quality
Mycobacter DP treated English Oak, cv. Fastigiata, had on average (measurements same year and year later) a 4.1 % bigger trunk diameter, 24.1 % more shoot growth, 17.8 % more dry weight, a 3.8 % lower dry:fresh mass ratio, 1.1 % more specific leaf weight, a 16.3 % bigger leaf area, a 12 % higher WUE, 12.8 % more chlorophyll 90 days after budbreak, 6.6 % more chlorophyll 135 days after budbreak, leafs contained 15.2 % more N%, 5.4 % more P%, 4.9 % more K%, 10.5 % more Mg% and 20.5 % more Fe compared to the untreated control.
Trial details
outdoor, unprotected, soil (clayey) grown + 80 L peat moss, planting before budbreak, no fertilisation during trial
Italy
Crop
Oak, Quercus robur
Trial application
Method
Drilling five holes around the root ball and filling each hole with 25 g of products
Timing
First application at planting, followed by 5 treatments with a monthly interval
Rate
25 g/hole; 375 g/plant/year
2003
Response of english oak (Quercus robur L.) trees to biostimlants application in the urban environment
Journal of Arboriculture
28(2)
70-76
Crop group
