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5 Dec 2003 by Anthony Asquith

nematodes

can anyone please explain about nematodes?

6 Dec 2003 by Michael Glover

Nematodes

Tony,

The STRI had a good article on nematodes in the turfgrass bulletin of July 2000, issue 209.

The following brief extracts may help:

"Nematodes are microscopic round worms which are generally between 0.5mm & 2.0mm in lenght. There are many type of nematodes which naturally inhabit our soils but it is only a relatively small number which actually cause problems on turf in the UK"

"Until recent years, nematodes had not been considered a problem for turf in this country. Recently, however, we have seen nematode problems on both course & fine turfgrasses"

The article was by Kate Entwistle (STRI plant pathologist)

6 Dec 2003 by Anthony Asquith

nematodes

cheers michael.whtat problems do thy cause?.and what is the remedy?

6 Dec 2003 by Michael Glover

Nematodes

Tony

The STRI article describes nematode activity as favouring warm soil temperatures and restricted by soils which are either dry or waterlogged. They also prefer light, sandy soils rather than heavy and compacted rootzones.

The article states that symptoms caused by nematodes vary depending on the type, it described surface symptoms on Poa Annua as being weak and patchy and on Fescue as a change of colour to a ginger brown, all having unusual growths and swellings on the roots, it states that generally nematode problems will affect the plant's water and nutrient up-take ability and that the result of some of these attacks is a restricted root system which is swollen all over.

The article stated that there are no chemical controls which have approval for nematode problems on turf in the UK.

This article was published in 2000 and seemed to be based on Lab tests carried out in l998, the situation may have changed since then.

Best of luck.

9 Dec 2003 by fescue

Nematodes

Cerain types of nematode are now being used as a biological control for pest such as leather jackets. If you require any futher information I would suggest contacting Kate Entwhistle via e-mail.

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