Bejdsning mod rodbrand i sukkerroer

423-2021, Mikkel Nilars, NBR


Fungicide seed treatments with Tachigaren and Vibrance SB has been studied in three field trials. The infestations have been more severe than in previous years’ experiments – thus an average of 13% of the plants in untreated are attacked by damping off in the first registration, and 31% of the plants are attacked in the second registration in early June. This has resulted in relatively large plant losses. These large plant losses have led to relatively high and statistically significant additional yields in the 2021 trials. Several years of trial results with Tachigaren show reduction in damping off and higher final plant numbers. Variable yield increase has been obtained with a tendency of 1 per cent increase in average over the years.