report-fight-against-blight-independant-blight-fungicide-trials-2003-2005-summary
This report presents independently generated data on the effectiveness and technical attributes of blight fungicides.
The BPC commissioned ADAS & SAC to carry out field trials in 2003, 2004 & 2005, located at ADAS Rosemaund and SAC Auchincruive. Only two trials were carried out at each site in each year. The P. infestans isolates used were all recent isolates at the time from the UK. All trials were carried out on small plots of the variety King Edward. To make comparisons of all possible combinations would be prohibitively expensive therefore the work reported concentrated on two protocols:
Early season fungicides (Protocol 1): Evaluation of fungicides applied very early in the development of the crop. Two new fungicides at the time, Sonata and Tanos, were compared with three established fungicides often used at the start of programmes, Dithane NT, Invader and Shirlan.
Main season fungicide evaluation (Protocol 2): The performance of fungicides applied from the end of rapid canopy growth was compared because most of the new fungicides are recommended for this growth phase of the crop. In addition, this would allow their effectiveness in controlling tuber blight to be evaluated. The new fungicides Electis, Ranman TP and Sonata, were compared with the established products, Curzate M, Invader and Shirlan.
The fungicides tested gave a similar level of foliar blight control. The trials provided strong data for the relative fungicide efficacies against tuber blight.
Tags: Add new tag, Blight
