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.
You will often see CEC mentioned in passing on a soil analysis report, but what does this mean?
Every day Greenkeeping and bowling can have a high disturbance value and put the very grass we are tending under a lot of stress. Mowing, verti-cutting, wear from bowling, pests, diseases, disorders, aeration, top dressing, water and nutrient availability and soil pH can all cause stress to a greater or lesser degree and this will change depending on grass species, general green condition, weather and soil type/condition.
Beyond plant growth, seaweed feeds the microbial community that underpins a healthy green. Polysaccharides like laminarin and fucoidan stimulate beneficial soil microbes, improve aggregation, and enhance nutrient cycling.
In 1988, Grime, Hodgson and Hunt published their study called “Comparative Plant Ecology – A functional approach to common British species”, which on the face of it sounds like ideal bed time reading for insomniacs. However, the work these scientists carried out might make you sit up in bed and take notice when you realise how relevant it could be to the performance of your bowling green.
