VOLUME 2 Issue 1/1

 DOI: 10.32636/agroscience.2023-(2)-1-1

DEVELOPMENT OF DRY FUSARIOUS ROT ON POTATO VARIETIES 

ON THE NATURAL INFECTION BACKGROUND IN THE WESTERN FOREST-STEPPE OF UKRAINE 

 

1Kateryna YATSUKH, candidate of biological sciences 

1Oksana VASHCHYSHYN, scientist 

2Ivan TYMCHUK, candidate of agricultural sciences 

1Institute of Agriculture of the Carpathian Region of NAAS 2National University «Lviv Polytechnic» 

 

The article presents the results of studies of the development of fusarium dry rot of 32 potato varieties of different ripeness groups against a natural infectious background. It was established that the development of this disease was influenced by the weather conditions of the growing season of potatoes and the characteristics of the studied varieties. In 2011-2015, tubers affected by dry fusarium rot in the group of early potato varieties ranged from 1.0% to 13.2%, in the group of medium-early potato varieties – from 1.1% to 10.0%, in the group of medium-ripening varieties potato varieties – from 1.0% to 6.2%, in the group of medium late potato varieties – from 1.2% to 4.7%. It was established that in the group of early potato varieties, Anosta (0.5%), Shchedryk (1.2%) and Agrarna (1.4%) varieties were relatively resistant to Fusarium dry rot in an average of five years; in the group of mid-early potato varieties – Mavka, Dara and Sante (2.3% each). In the group of medium-ripe potato varieties, tubers of the Typhoon variety were resistant to the causative agent of dry fusarium rot, relatively resistant to the Hirska variety (0.5%); in the group of mid-late varieties of potatoes, the tubers of the Olvia variety were resistant to the above-mentioned disease, while the Chervona ruta variety was relatively resistant. From the early ripeness group, the highest yields on average over five years of research were shown by Shchedryk (38.4 t/ha), Anosta (38.3 t/ha) and Lastivka (35.6 t/ha) potato varieties: in the medium-early group – potato varieties Svalyavska (35.9 t/ha), Obrіi (35.6 t/ha), Mavka and Dara (35.4 t/ha each); in the medium-ripening group – potato varieties Taifun (42.6 t/ha), Hirska (38.1 t/ha), Volya (36.7 t/ha) and Slovianka (36.4 t/ha); in the middle-late group – the Olvia variety (41.8 t/ha). 

Keywords: potato, fusarium dry rot, disease development, natural infectious background, productivity.