Skip to main content

Effects of cyazofamid against Plasmodiophora brassicae Woronin on Chinese cabbage

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

Abstract:



Cyazofamid (4-chloro-2-cyano-N,N-dimethyl-5-p-tolylimidazole-1-sulfonamide) is a novel fungicide with high levels of activity against Oomycetes fungi and Plasmodiophora brassicae Woronin. The effects of cyazofamid were investigated against P brassicae, the causal agent of clubroot disease in Chinese cabbage. Cyazofamid at 0.3 mg litre-1 inhibited resting spore germination of this pathogen by about 80%. Cyazofamid at 3–10 mg litre-1 exhibited fungicidal activity to resting spores of P brassicae 1–10 days after treatment. When cyazofamid was applied to infested soil, both root-hair infections and club formation caused by P brassicae were strongly inhibited at 1–3 mg kg-1 dry soil. These results suggest that cyazofamid directly inhibits resting spore germination, thereby leading to the inhibition of root-hair infection and club formation. Cyazofamid at 3 mg kg-1 dry soil also exhibited complete control of clubroot disease. The effect of broadcast soil application using a dust formulation at 2 kg AI ha-1 (equivalent to 1.3 mg AI kg-1 dry soil), and plug seedling tray application by a suspension concentrate formulation at 200 and 400 mg AI tray-1 (30 × 60 × 4 cm3) against P brassicae was also evaluated. Cyazofamid exhibited good efficacy against the pathogen. The sequential treatment including plug seedling tray application with cyazofamid and pre-plant broadcast soil application with the fungicide fluazinam also exhibited excellent levels of control. These results indicate that cyazofamid has a high potential to be an effective fungicide for the control of clubroot disease.

© 2003 Society of Chemical Industry

Keywords: IKF-916; Plasmodiophora brassicae; clubroot; cyazofamid; resting spore

Document Type: Research Article

DOI: http://dx.doi.org/10.1002/ps.627

Affiliations: *

Publication date: March 1, 2003

More about this publication?
jws/ps/2003/00000059/00000003/art00627
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more