Effect
Decreased produce quality
Decreased nutrient availability in soil or substrate
Maxicrop treated Creeping bentgrass, cv. Penn A-1/Penn A-4/Penn G-6, grown in a golf green had a 6.4 % lower visual turf grass quality, a 10.5 % lower turf color score, a 8.7 % lower tiller density, 7.3 % more winter injury, 2.1 % less plant coverage, 50 % more plot area infected by diseases, a 1.5 % higher soil pH, soil contained 20 % less P, 14 % more K, 7.1 % more Mg, 9.8 % more Ca and 18 % less Na compared to the control treated with a mineral fertilizer (Arena).
Trial details
outdoor, unprotected, soil grown (12 % (v/v) sphagnum peat in root zone layer), optimal cultivation of golf green
Norway
Crop
Creeping bentgrass, Agrostis stolonifera L.
Trial application
Method
Foliar spray
Timing
First treatment in start of growing season (May), followed by 6 treatments with a 2 or 4-weeks interval till the end of the growing season
Rate
5 L/100 m², 0.12 kg/100 m²
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
