Cultivar Differences in Response to Triadimenol Seed Treatment for Control of Barley Net Blotch Caused byPyrenophora teres
- 1 January 1985
- journal article
- research article
- Published by Scientific Societies in Plant Disease
- Vol. 69 (1) , 77-80
- https://doi.org/10.1094/pd-69-77
Abstract
In the spring of 1981 there was an upsurge of net blotch, caused by P. teres, in commercial barley crops [Hordeum vulgare] in the North Island of New Zealand. In the following season, net blotch became epidemic in the Manawatu/Wanganui districts. This was believed to be due to the failure of the popular seed treatment containing triadimenol + fuberidazole to control the disease on the newly introduced cultivars Mata and Triumph. Trials confirmed the poor performance of triadimenolon these and other new cultivars and its continued effectiveness on the older cultivar Zephyr. In the autumn of 1984, triadimenol also failed to control net block on ''Zephyr. The problem appears to have arisen from the introduction of a triadimenol-insensitive fungus on overseas cultivars.Keywords
This publication has 1 reference indexed in Scilit:
- The role of seed-borne inoculum in the epidemiology of net blotch of barley in New ZealandNew Zealand Journal of Experimental Agriculture, 1980