Master Greenkeeper John Quinn is the author of Performance Bowling Greens, and several other titles on Greenkeeping, Club and Business Management.
Biotic and abiotic factors interact with each other. For example low oxygen levels in turf (abiotic) will affect the health of the turf roots directly when the soil becomes increasingly acidic making it harder for roots to extract nutrients from the soil, and indirectly by reducing the population of beneficial bacteria (biotic factors) which play a role in breaking down organic material to release nutrition.
Some of the key factors that benefit or hinder a species in its quest for dominance are described as Environmental Stresses. It is these stresses that drive the evolutionary process and as such can be used by the bowling greenkeeper to create conditions that are more suitable for the desired species than for others. There are a number of ways for greenkeepers to manipulate the environment artificially, or indeed to take advantage of naturally occurring stresses, in order to alter the balance of the bowling green ecosystem in favour of the desired grass species. An understanding of Competition and Adaptation in eco systems will help you a great deal in developing a sound greenkeeping program for fine, perennial grasses.
However we choose to interact with this bowling green ecosystem (with or against nature) we will be working within a dynamic, constantly changing environment and it is vital that we understand this before stepping off into a new program of maintenance. In other words we need to think of our green as an eco-system. Getting to grips with some universal ecological terms will be useful.
Chemicals can affect the soil and the micro-organisms contained within it. Of course, in some cases this is exactly the effect that is required. Fungal pathogens such as those responsible for Fusarium disease in turf are micro-organisms and we might think, that logically, it's a good idea to be rid of these.
But is it?
The management of bowling greens often presents complex challenges, one of the most prevalent being the occurrence of localised dry patch (LDP) due to hydrophobic soil conditions. Addressing this issue effectively is crucial for the health and performance of your green and wetting agents have emerged as a key tool in this endeavour.
However, concerns have been raised about the potential toxicity of commonly used chemical wetting agents, leading to a call for safer, more environmentally friendly alternatives.
