Fungicide comparison - Updated 15 July 2010

The effectiveness of fungicide products/co-formulations for the control of P. infestans based on the highest rate registered in Europe. These ratings are the opinion of the Fungicides Sub-Group at the Arras late blight workshop, 2010 and are based on field experiments and experience of the products performance when used in commercial conditions.		 Print this page
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    Effectiveness Mode of action Rainfastness Mobility in the plant
Product 1   Leaf blight 2 New growth Stem blight Tuber blight Protectant Curative Anti sporulant    
copper     ? 0 0 contact
dithiocarbamates 3   2.0 ? 0 0 0 contact
chlorothalonil     ? 0 0 0 contact
cyazofamid   3.8 0 0 contact
fluazinam   2.9 ? 0 0 contact
zoxamide + mancozeb   2.8 ? 5 0 0 contact + contact
famoxadone + cymoxanil     ? N/A contact + translaminar
mandipropamid   4.0 5 6 translaminar + contact
benthiavalicarb + mancozeb   3.7 ? 5 translaminar + contact
cymoxanil + mancozeb     ? 0 translaminar + contact
cymoxanil + metiram     ? 0 translaminar + contact
cymoxanil + copper     ? 0 translaminar + contact
dimethomorph + mancozeb   3.0 ? translaminar + contact
fenamidone + mancozeb   2.6 ? 5 0 5 translaminar + contact
benalaxyl + mancozeb 4     N/A systemic + contact
metalaxyl-M + mancozeb 4     N/A systemic + contact
metalaxyl-M + fluazinam 4     N/A systemic + contact
propamocarb-HCl + mancozeb     systemic + contact
propamocarb-HCl + chlorothalonil   3.4 systemic + contact
propamocarb-HCl + fenamidone   2.5 systemic + translaminar
propamocarb-HCl + fluopicolide   3.8 systemic + translaminar

1 The scores of individual products are based on the label recommendation and are NOT additive for mixtures of active ingredients. Inclusion of a product in the list is NOT indicative of its registration status either in the EU or elsewhere in Europe, 2 Based on EuroBlight field test in 2006-2008, 3 Includes maneb, mancozeb, propineb and metiram, 4 See proceedings for comments on phenylamide resistance, 5 Based on limited data, 6 In some trials there were indications that the rating was 1½

Ratings for leaf blight is based on results from Euroblight field trials during 2006-2009, and only compounds included in these trials are rated for leaf blight. The scale for leaf blight is a 2-5 scale (see technical report). All other ratings are 1-3 scale indicated by a combination of full (1) and half (½) orange colored dots.

Key to ratings: 0 = no effect ; = reasonable effect ; = good effect ; = very good effect ; N/A = not recommended for control of tuber blight; ? = no experience in trials and/or field conditions.

Whilst every effort has been made to ensure that the information is accurate, no liability can be accepted for any error or omission in the content of the tables or for any loss, damage or other accident arising from the use of the fungicides listed herein. Omission of a fungicide does not necessarily mean that it is not approved for use within one or more EU countries.

The ratings are based on the label recommendation for a particular product. Where the disease pressure is low, intervals between spray applications may be extended and, in some countries, fungicide applications are made in response to nationally issued spray warnings and/or Decision Support Systems. It is essential therefore to follow the instructions given on the approved label of a particular blight fungicide appropriate to the country of use before handling, storing or using any blight fungicide or other crop protection product.