RESISTANCE OF SPRING RAPE VARIETIES TO DISEASES OF FUNGUS ETIOLOGY UNDER THE CONDITIONS OF KURGAN REGION
The response of spring rape varieties to lesions caused by fungal diseases has been considered in the article. Fusarium, alternaria and peronosporosis have been observed in the structure of the pathogenic complex of spring rape agrophytocenosis. The highest resistance to fusariosis, on average for two years, was demonstrated by the DLE and Start varieties, with the disease development being 11.8 and 13.6%, respectively. The least affected with peronosporosis were the Granit (25.4%) and DLE (29.1%) varieties of spring rape. The highest spreading of peronosporosis was observed with the Yubileiny variety - 92%, while with other variants this index was at the level of 84-85%. As to the influence of alternariosis on rape, there were no significant differences in any rape varieties, with the lesion in all variants having been 25%. The maximum yield of oilseeds was formed in the DLE and Start varieties - 23.6 and 22.6 cwt/ha (higher than the standard yield by 24.2 and 18.9%, respectively).