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Effects of Soil Pests

Soil pests such as Potato Cyst Nematode (PCN), Free-living Nematode (FLN) and Wireworm can cause considerable damage to crops.

PCN alone is the most important potato soil pest, costing the potato industry £25 million per year and additional costs are incurred by processors and retailers due to reduced crop quality from the effects of other pests.

There are two species of PCN, Globodera rostochiensis and Globodera pallida. G. pallida (white or pale cyst nematode) has become predominant due to the cultivation of varieties with resistance to G. rostochiensis (yellow or golden cyst nematode). 

Both species survive in soil as cysts, which can contain more than 500 eggs, and can persist for many years. The eggs contain juvenile nematodes and in the presence of a potato crop some of the juveniles hatch and invade the potato roots. 

Diversion of nutrients from the roots to the feeding nematodes leads to poor growth, nutrient deficiency and water stress in the crop.

Potato cyst nematode soil sampling

Nemathorin Stewardship Centre

Without effective stewardship of nematicide products, legislative authorities will not continue to register them for use. We have gathered the necessary knowledge to help growers make safe and effective applications of NEMATHORIN.



QUANTIS Potato Biostimulant

Syngenta Potato Product Portfolio


Tackling Potato Late Blight

Potato late blight (Phytophthora infestans) continues to create the greatest challenge for potato growers and agronomists. Blight outbreaks can quickly devastate entire fields, leading to significant yield losses and widespread tuber blight infection.

Favoured by warmer and wetter conditions associated with climate change, issues have been getting progressively more difficult. Blight resistant potato varieties currently offer little or no respite.

Syngenta's Potato Late Blight experts share their advice in our Blight hub, ensuring growers and agronomists are best placed to succeed in the fight against blight.


Tackling early-season blight

Bringing REVUS into play earlier in the programme has the benefit of protection locked into the leaf wax layer, which gives prolonged protection through its movement into new growth in the early part of the season.

Later in the season, AMPHORE PLUS equips growers with the ability to apply a robust loading of difenoconazole at each application to help protect crops from Alternaria.

Potato field

Tackle weed competition early

Weed competition can have a significant impact on potato yields; as well as affecting tuber size and quality. Their presence can also encourage certain pests and diseases. Weeds should be tackled early, and DEFY applications close to crop emergence provide a long period of weed-free establishment. DEFY herbicide mixtures offer growers greater options and practical opportunities to achieve effective weed control.