ICL’s slow release fertilizers (SRFs) deliver proven high quality performance and are based on the principle of nitrogen chains breaking down gradually over (a few weeks) time. Unlike controlled release fertilizers (CRFs), SRFs do not use a coating technology for its slow release of nutrients. SRFs are minerals that take certain time to dissolve. The nutrient release of SRFs is influenced by temperature, water, soil pH and microbe activity.
8 Products found
SierraformGT Spring Start is the ideal granular fertilizer for the first application of the season, with iron and manganese to boost color and photosynthesis and low MU content for quick reactions to cold temperatures.
Sierraform® GT Anti-Stress helps your turf through stress and keeps it looking in peak condition. High potassium is perfect in the summer or autumn, in areas of fine turf. Slow-release nitrogen to support growth for 6 – 8 weeks and minimize growth surges. Its single-compound micro-granules feature our special patented MU2 and SilK coating technologies.
Sierraform GT CalMag is a zero-phosphate mini-granular fertilizer supplying calcium, magnesium, and trace elements for growth and all-round plant health – with SMX for extra rooting and turf stress management.
SierraformGT K-Step is an ideal pre-stress conditioner, with low nitrogen for compact growth and hardening, high potassium for stressful summer and winter growing conditions, and magnesium for turf color and to mask stress symptoms.
When you’re overseeding or laying new turf, there’s no better solution than Sierraform® GT Preseeder. It contains both slow-release nitrogen and slow-release potassium, along with conventional release NPK (18-22-5) in a single compound micro-granule. The high phosphorus analysis in Preseeder promotes good rooting and establishment on your greens, tees, fairways, and sports fields, while minimizing salt levels to boost germination rates. Its nutrient release pattern is tailored to the needs of new turf or seed.
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