Resistances and diseases: Phythophthora

Den Hartigh sells a wide range of potato varieties. Through years of knowledge of and experience in various markets, we know the most important properties. In addition to yield, resistances to diseases and pests are also an important starting point. In our breeding program, crossing such resistances into new seedlings is one of the objectives.

Resistances by market

For the organic market, Den Hartigh has developed potato varieties with resistance to Phytophthora, for the export market strongly common scab resistant varieties with a high yield and for the French fries market varieties that have good resistances against potato cyst nematodes, wart and tobacco rattle virus. The newly developed varieties are strong against virus Y, which is appreciated by our seed producers.



Phytophthora is the most common potato disease potatoes. The disease causes a lot of damage in the crop and causes loss of yield. A producer can spray with fungicides, but Den Hartigh has also another contribution. Due to breeding on resistant varieties, the producer does not have to spray so often against Phytophthora. Within our portfolio of varieties we have two Phytophthora-resistant varieties: Connect and Nola. Both contain stacked resistance genes, making resistance more sustainable. Within our breeding program, we pay attention to stacking two or more resistance genes.

Phytophthora (late blight)