disease
• Poor response to nutrients • Recovers slowly from drought What to look for below ground • Evidence of a stunted root system • Abnormal root morphology • Presence of thickenings in the roots There are other useful questions to
ask:
In turf containing mixed grass species, what types of grass are showing symptoms? Are symptoms linked to conditions favouring nematodes? e.g. sandy soils or areas that have received heavy sand topdressing.
Samples submitted for nematode analysis contain a wide variety of nematode types. Most are beneficial bacterial and fungal feeding species, but up to fourteen different types of plant parasite are regularly detected in UK turfgrass. Each has its own distinctive effect on plants and, because of differences in their biology, a range of techniques may be needed to manage them.
It is also important to note that
different turf types will contain different nematode problems. For example, while root knot nematodes are common in most turf types, stubby root nematodes and sheath nematodes are most often found in ryegrass soccer pitches.
Pratylenchoides is common in creeping bentgrass golf greens while root gall nematodes are restricted to parasitising Poa plants in golf greens. Next time we will have a look at the range of management techniques which
have been used to control nematode damage in turfgrass and get the views of some turf managers who have been actively dealing with the problems over the last few years.
Nematodes found in different turf types during 2007/08
An environmental nematicide for protecting grass
• Reduces Nematode populations in sports grounds and golf courses
• Quick, clean and easy to apply • Economical - 5 litres treats up to 9 greens • Improves the look and quality of the grass • Natural product - safe to use in public areas
Grange Farm, Hilborough Norfolk IP26 5B
Tel: 01760 756100 / 07810 305605 Email:
ecospray@ecospray.com
eco
www.ecospray.com
spray
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