National Academy of Agricultural Sciences (NAAS)
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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 |
Caseworm, Nymphula depunctalis infestation was started from very initial stage (15 DAT) and lasted upto 75 DAT. The highest peak (21.25 percent) was recorded at 45 DAT while the infestation was above ETL upto 60 DAT. Among the weather parameters, rainfall showed significant positive correlation (r=0.828) and minimum temperature as well as number of rainy days showed nonsignificant but strong positive correlation with N.depunctalis infestation (r=0.789 & 0.806, respectively). Study on transplanting dates showed a significant impact on the pest infestation. Crops which were transplanted before first half of July showed negligible infestation (3.2-6 percent). But when transplanting was done on 15thof July, the crop was just above ETL and the last transplanting date (5th August) was worst affected by N. depunctalis with 31.65 percent infestation. From the study, it can be recommended that transplanting of Sali rice should be done before 15th of July in the N. depunctalis endemic areas.
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