ISODUR 
A trade product name for Isobutylidenediurea (IBDU).
Kainit
An inorganic source of potassium, which is or was sometimes used within a fertiliser compound. The material typically contains 20% potassium chloride, 15% magnesium sulphate and 46% sodium chloride; It contains 12% potassium (14% potash). If it formed part of a compound fertiliser applied as a seed bed fertiliser then in the past it would have been applied in the autumn or early winter to the soil to allow the undesirable concentration of salts to be washed through the soil in anticipation of a spring sowing: This is not a viable practice in modern turf care.
Kali Gazon 0-0-27 (+11% MgO) + 17% S
A mini-granular fertiliser (0.5-2mm diameter) for medium to high value turf. This is produced by Compo Expert.
Kierserite
An inorganic source of magnesium in the form of magnesium sulphate monohydrate. It typically contains 16% magnesium and 22% sulphur. It is highly soluble and forms the raw material for Epsom salt.
Krista Range
A water soluble fertiliser range, produced by Yara.
Continue reading about this
Kristalon Range
A water soluble granular fertiliser range, produced by Yara.
Continue reading about this
Liquid Chelated Iron
A liquid fertiliser with 8% of chelated iron; particularly for use during the autumn and winter period to aid turf hardness and reduce moss infestation. It is supplied by Germinal GB Ltd.
Liquid Cold Starter
A couple of products supplied by Agronomic Services.
• 18:18:18 Bio, which is a liquid NPK concentrate; with an application rate of 10 ltrs/ha.
• Iron Man-Fe + Seaweed 5-0-0 +7%Fe, which is a liquid Nitrogen and Iron booster fertiliser, with an application rate of 30 ltrs/ha.
Liquid Iron
A make of lawn fertiliser, being part of the SmartLawn brand, with an analysis of 2:0:0, +6%Fe (ferrous sulphate) +1%Mn.
Continue reading about this
Liquid LongLast
Liquid fertilisers with UMAXX produced by Vitax.
• In-season ¯ 21:0:0
• Added phosphate and potash ¯ 18:2:8