Effect
Decreased produce quality
Decreased nutrient availability in soil or substrate
ProGreen treated Kentucky bluegrass & perennial ryegrass, cv. Limousine & Barain, grown in a football field had a 2.9 % lower overall turf grass quality, a 1.4 % lower turf color score, a 4.2 % lower tiller density, 2.1 % less plant coverage, the same amount of plot area infected by diseases, a 5.9 % higher soil pH, the soil contained 14.6 % less NH4, 48.8 % less NO3, 18.7 % less P, 15.2 % less K, 29.4 % less Mg and 62.5 % 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
Timing
First treatement in start of growing season, followed by a two-weekly treatment tille the end of the growing season
Rate
0.73-3.14 kg/100 m² (dose depended on week)
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
