Grasses employ a range of physical, chemical, and indirect defences to protect their roots from insect herbivores. Further research is needed to fully understand these mechanisms and to explore other potential defences, but meantime, we can take some of this knowledge and apply it now to our greenkeeping practices.
The soil food web has become an increasingly popular term in greenkeeping and bowling green management. The problem-solution-problem, or symptoms approach to greenkeeping has been exposed as fundamentally flawed by the diminishing list of available pesticides now available to turf managers. Is there a better way to manage greens...yes. And the extraordinary discovery is that a greenkeeping program that focusses on the green as an eco-system is fully compatible with producing tight, natural turf dominated by the fine perennial Fescue and Bent grasses.
If your green maintenance budget was cut in half this year what would you do?
Most clubs when faced with cuts to the greenkeeping budget, will try at all costs to keep the most important work in the plan. Unfortunately, important frequently gets confused with dramatic, which means that the big expense of top-dressing in the spring and autumn usually stays in the plan and I wish it didn’t for all the reasons I’ve explained over many articles.
Meantime, the work deemed less important and which of course is less dramatic is often sidelined or dropped as a result of a fear of what might go wrong if the big, sexy stuff is missed. These big jobs “must be doing a lot of good”, or so the thinking goes, because they’re so expensive and disruptive?
Yes, I'm thinking about Autumn already. Why?, It's all to do with the devastating effect of Localised Dry Patch on many greens this year. I've ever had so many people get in touch. It looks like the more regular occurrence of extreme heat and long dry spells is demonstrating the problem of excessively sandy rootzones, much better than I could ever hope to explain...
The Sweet Spot in greenkeeping is when your green's Physical, Chemical and Biological components come into line to deliver results you couldn't previously have imagined were possible. Hitting that sweet spot is a lot simpler than you might imagine too, as focus on the soil's biology will naturally correct some of the worst Chemical problems and compensate for some of the worst Physical ones. There should be no problem "selling" this idea to your club either as first of all it saves money and secondly it massively improves green performance and consistency.
Sand Top Dressing - that ubiquitous and apparently simple greenkeeping operation indulged in by most clubs annually is actually a much more complex operation than most give it credit for. In this article John Quinn explains the mechanics of top-dressing. He explains what it can and can't do and why you must understand some soil science before top-dressing is considered.
Compost tea is a specially home brewed spray that will boost the microbe population in your bowling green, allowing you to encourage the finer grasses and combat dry patch, disease and thatch, naturally and effectively.
After studying this subject I can say that compost tea is an essential addition to the Performance Bowling Greens Program. Regular use of compost tea can significantly boost soil microbial activity and helps to make better use of fertiliser inputs. Correct formulation of the mixture during brewing will increase the dominance of the fine perennial grasses in the green sward.
By using compost teas, greenkeepers can reverse decades of damage caused by inorganic fertilisers, pesticides and excessive sand top-dressing.
Transitioning your green from Poa annua to bent/fescue is not only critical to achieving a Performance Bowling Green, but is actually a realistic goal. The spongy, soft turf associated with annual meadow grass is less than ideal for bowls. Common wisdom says that this can't be done without major disruption and that even after it is achieved it wont last. This article explains in detail how to undertake the transition of your green from Poa annua to bent/fescue turf and dispels the myths about stressing Poa. This is the way to change your green permanently and without fuss. It will also save your club money on maintenance, so what's not to like?
The micro-life in the soil makes nutrients, the building blocks of plant tissue, available in plant useable form
On greens that have been managed in the conventional way for any length of time i.e. using pesticides and inorganic fertilisers, it’s likely that the soil microbe population will be significantly depleted. There might also be gaps in the eco-system, essentially “missing microbes”.
