Abstract: A yearlong experiment was conducted in the farmers field during 2017- 2018 to find out the level of purple blotch disease under different levels of irrigation and fungicide spray in onion farms. T1:No plot was sprayed with fungicide at 4 day irrigation  interval; T2 :No plot was sprayed with fungicide at 10 day irrigation interval;T3 :plot was sprayed 9 times  with fungicide  at 4 days irrigation interval;T4:  plot was sprayed 5 times with fungicide at 4 days irrigation interval; T5:plot was sprayed 9 times with fungicide at 6 days irrigation interval; T6 :plot was sprayed 5 times with fungicide at 6 days irrigation interval; T7: plot was sprayed 7 times with fungicide at 10 days  irrigation interval;T8: plot was sprayed 9 times with fungicide at 10 days  irrigation interval;T9:plot was sprayed 7 times with fungicide at 4 days irrigation interval; T10: plot was sprayed 7 times with fungicide at 8 days irrigation interval; T11: plot was sprayed 7 times with fungicide at 6 days irrigation interval; T12: No plot was sprayed with fungicide at 8 days irrigation interval; T13:plot was sprayed 9 times with fungicide at 8 days irrigation interval; T14: plot was sprayed 5 times with fungicide at 10 days  irrigation interval; T15: no plot was sprayed with fungicide at 6 days  irrigation interval; T16: plot was sprayed 5 was recorded in treatment thirteen T13 where 9 sprayed fungicide and applied at 8 day irrigation interval. The highest PDI (96.3%) was counted in treatment one (T1).

Application of combined fungicide and irrigation interval has reduced the disease severity significantly, while irrigation alone had no significant effect on disease infection. But there was a decreasing of the disease severity with increasing irrigation frequency.

Keywords: Purple Blotch disease, level of Fungicide Spray, Ethiopia.

Title: Response of onion to Purple Blotch disease under different level of Fungicide Spray frequency and Irrigation Interval in Adami Tulu Jido Kombolcha district of Ethiopia

Author: Alemu Jula, Desta Abi, Girma Adugna

ISSN 2394-966X

International Journal of Novel Research in Life Sciences                                                    

Novelty Journals