National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Late blight caused by Phytophthora infestans (Mont.) de Bary has historically been a most serious disease of potatoes worldwide, including India. Due to differences in prevailing weather conditions, its severity varies from region to region. when tuber are planted first fort night of October disease initiated within 59 days, and there after the period for disease initiation decreases. It was observed that number of days to initiate late blight symptom on potato was an inverse function (Y=a+bx-1) of average minimum temperature from sowing and R2 values (0.81) of the equation were statistically significant at 1% level of significance. The results also revealed that in respect of per cent incidence of the disease (at 49 days after first appearance of symptoms) lowest disease was recorded in case of treatment T3 and total tuber yield i.e., in T3 it was 15.4 to 24.6 t/ha respectively followed by T1 and T2 as compared to control treatment (T5) where per cent disease incidence was 89.70 to 97.14% and total tuber yield was 8.68 to 14.0 t/ha. B Not only that the farmers in a locality should apply fungicide at the same time and the whole plant should be sprayed till run off.
Citations |
 |
 |
 |
 |
