Carrots and parsnips: Review and investigation of factors influencing crop damage by plant-parasitic nematodes.

Growers now have a 'decision tree' that enables them to develop a rational approach to nematode control.
Soil sampling for plant-parasitic nematodes is vital for cost-effective nematicide use.
Stubby-root nematodes are the most prevalent species thought to damage carrots in the UK. Needle nematodes are also relatively common, and can cause root fanging. Carrot cyst nematode and root-knot nematode are more localised problems. Root-lesion nematodes are common but their importance in root damage remains unclear.
The efficacy of Temik (aldicarb) is variable and there is a risk that enhanced biodegradation of the product may occur where it is used frequently.
An integrated pest management system offers the most sustainable option for future control of nematodes in carrots.

Sector:

Horticulture

Date:

01 April 2000 - 31 December 2002

Project leader:

DR S A ELLIS