Conditioner

1. A material which improves the growing conditions, health and resilience of a turf surface. It may encourage an increase in micro-biology; it may improve soil structure, and soil organism activity (such as earthworms), produce a more uniform surface – either vegetatively (which may include reducing the competitiveness of disease, weeds, moss and algae), or by colour, or address an imbalance of micro-nutrients. See also Soil Conditioner and Turf Conditioner.
2. A material which is added when mixing some, especially inorganic, fertilisers. The purpose of a conditioner in this situation is to reduce the chance of the fertiliser mixture setting by forming clumps and becoming unusable.