Each individual grass plant releases sugars through its roots to attract beneficial microbes. In return, those microbes mine nutrients from the soil, cycle organic matter, suppress disease, and improve soil structure. This is so important to the health of plants that they give up around 50% of the sugar they produce during photosynthesis as root exudates.
The highly sandy nature of many bowling greens and the historical routine use of fungicides of course means that the fungal community is at best compromised. However, we can encourage they're development by providing bio-stimulants. These are typically long-chain sugars such as—kelp, humic acid, and molasses derived bio-stimulant materials. In fact, trials have shown that spraying Trichoderma fungi (a natural Fusarium suppressor) with 20 litres of a biostimulant such as Molturf per hectare extended its protective activity for over five weeks. Even at lower rates, molasses is a highly effective and underutilised biostimulant.
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.
When fungicides are used repeatedly, they don't just suppress disease temporarily; they erode the very microbial networks that would naturally keep disease in check. This explains why many greens find themselves caught in a cycle of recurring outbreaks and escalating chemical inputs.
Across the UK this summer, bowling greens are being baked in the intense summer heat. Weeks of hot, dry weather have left surfaces bare, cracked, and rock-hard. For many clubs, the underlying soil has crossed into a more serious condition — hydrophobicity — where the soil physically repels water, a phenomenon known as Localised Dry Patch.
If that’s where your green is today, you’ve got a problem.
You can simply can't wait until your usual mid-September renovation
