Effect
No effect on produce quality
Decreased nutrient availability in soil or substrate
ProgGreen + Activo treated Kentucky bluegrass & perennial ryegrass, cv. Limousine & Barain, grown in a football field had a 1.5 % higher overall turf grass quality, a 1.4 % higher turf color score, a 2.8 % lower tiller density, 1.1 % less plant coverage, 33.3 % more plot area infected with diseases, a 4.4 % higher soil pH, soil contained 14.6 % less NH4, 42.7 % less NO3, 12.5 % less P, 27.3 less K, 38.2 % less Mg and 65.6 % less Ca compared to the control treated with a mineral fertilizer
Trial details
outdoor, unprotected, soil grown (sand-based rootzone), optimal cultivation in football field
Norway
Crop
Grass, Poaceae
Trial application
Method
Spread over soil + foliar spray (Activo)
Timing
First treatement in start of growing season, followed by a two-weekly treatment tille the end of the growing season
Rate
ProGreen: 0.71 - 3.6 kg/ 100 m² (dose depended on week); Activo: 0.10 kg/100 m², 7 L solution/plot
2009
Evaluation of organic fertilizers and biostimulants on sandbased golf greens and football pitches under Scandinavian climate conditions
BioForsk report
2
919-931
Crop group