Features Production Research
Syngenta adds new disease to Quadris label

Janury
24, 2012 – Syngenta Canada Inc. recently announced that Quadris^®
Fungicide now has control of the disease Black Dot added to its label for use
on potatoes.

Janury
24, 2012 – Syngenta Canada Inc. recently announced that Quadris^®
Fungicide now has control of the disease Black Dot added to its label for use
on potatoes.

Black
Dot, or Colletotrichum coccodes, is a common disease in potatoes. It is most
often found on tubers but can affect all parts of the plant. On potato foliage,
symptoms of the disease are nearly indistinguishable from early blight, and on
tubers, it produces blemishes sometimes mistaken for silver scurf. Black Dot
can significantly impact potato production, as it can affect the plant’s
vascular system causing the plant to wilt; while below ground, it can cause
severe rotting of roots, shoots and stolons, leading to early plant decline,
discoloured tubers and reduced yields.

Quadris
is a broad-spectrum, preventative fungicide with systemic properties. According
to Syngenta Canada, optimum disease control is obtained when Quadris is used as
a protective treatment prior to disease establishment. In addition to Black
Dot, as a foliar spray, Quadris is also registered on potatoes for control of
early blight (Alternaria solani) and late blight (Phytophthora infestans).

According
to the company, to control Black Dot, Quadris should be applied on a seven to 14
day interval, starting prior to disease establishment at a rate of 500 to 800
mL/ha.

For more
information, visit www.syngenta.com.