Pitchcare Classifieds MACHINERY & EQUIPMENT SUPPLIERS
Bacteria MAJOR Roller Mowers
A world without Oxygen?
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nd DENNIS mowers ROLLERS
With a squeeze on funds and resources, greenkeepers are under more pressure than ever before to produce the perfect playing surface reports David Snowden of
Agronomic Services
British built machinery for natural & artificial sports surfaces.
Bespoke units to your specification
IN a world without oxygen, there would be no life. Yet, in the world of sportsturf management, as professionals you are expected to maintain high quality turf when, in many areas, shade and compacted soils make the job virtually impossible.
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www.schsupplies.co.uk Call 01473 328272
ROLLERS
Compaction of the soils, poor rooting and uptake of plant nutrient make life very difficult.
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Nearly all organisms require oxygen - bacteria, plants, and animals. Humans, for example, can go weeks and even months without food. They can survive for many days without water, but they cannot survive more than a few minutes without oxygen.
Life is a balance and that certainly applies to the soils in which we try to grow grass. In an ideal world, we would have 50% soil, 25% water and 25% air; unfortunately, it is nearly always the air (oxygen) the soils are continually lacking.
In this ideal world, turf
managers would aerate as often as possible, with different tines, at various depths. Unfortunately, as we know, this upsets too many people, i.e. golfers! Aerification, in particular on golf greens, is one of the most disruptive practices undertaken, but it is also one of the most vital. However, some of the new technology is less time consuming.
Aeration is all about reducing
David Snowden
compaction, but mainly increasing the percentage of oxygen to the rootzone. Why?
There are so many different forms of bacteria, which naturally exist in the soil. However, there are three basic forms of bacteria, in which we as turf managers are extremely interested.
The first group, ‘the good guys’ are those which use oxygen to be prolific - aerobic. Then those which can survive in low or oxygen rich environments - facultative anaerobes) and, finally, those which do not use oxygen - anaerobic.
The more air you have in the soil, the more prolific the aerobes will become. These aerobic metabolisms consume oxygen for cellular respiration, releasing carbon-dioxide, water and nutrients for the roots to use and drink.
We have all seen a green-up around a tine hole a day or so after aeration. This is because we have suddenly helped the oxygen using microbes become much more prolific. They, in turn, produce CO2 and solubilise nutrients for root uptake; all we need to do is produce this effect over the whole playing surface on a regular basis, which is difficult when just using tines and machinery.
Remember, plants get approximately 80% of their required CO2 from the soil, and
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