Author: John

Master Greenkeeper John Quinn is the author of Performance Bowling Greens, and several other titles on Greenkeeping, Club and Business Management.

September 13, 2026

Phosphite and Disease Resistance

Phosphite (PO₃³⁻) is a reduced form of phosphate (PO₄³⁻), the familiar phosphorus source in traditional fertilisers. Although the two compounds are chemically related, their behaviours in plants and soils differ significantly. Phosphite is highly soluble and readily absorbed through both roots and foliage, making it a highly efficient delivery mechanism for phosphorus-related benefits, including disease and pest resistance, acting as a trigger for some of the plant's remarkable natural defence mechanisms.

August 31, 2026

Evolve G: Don’t Let Localised Dry Patch Go to Sleep This Autumn

Localised Dry Patch doesn’t disappear just because summer is ending. Evolve G Granular Wetting Agent is the perfect addition to our NotDressing autumn renovation programme, helping autumn rainfall penetrate stubborn hydrophobic areas and continuing the work on LDP quietly in the background through the wetter months, before next summer exposes the problem all over again.

August 30, 2026

Fixing low pH without Lime

As standard soil analysis offerings are generally obsessed with chemistry, a very low pH is often interpreted as a chemical imbalance, which, of course, it is. The question of why those acid cations are dominant on the soil colloid, remains unaddressed in most cases. Instead it seems that many advisers are jumping straight to the temporary, artificial correction advice to add lime, and as we have seen, for fine turf, that can be dangerous advice.

August 29, 2026

Grass Seed Mixes; 80/20, 60/40, 40/60? What’s the Difference and Why does it Matter?

I am frequently asked about the difference between our 80/20, 60/40 and 40/60 Premium Fescue/Bent Grass Seed Mixes. On the surface, it might just look like a simple percentage change, but there’s quite a lot going on behind those numbers that can affect both the long-term performance of your green and the cost of the mix.