Vol. 12, Issue 3 (2023)

Author(s):
Balaga Mohan Ganesh and Punam Bagang

Abstract:
A field experiment has been conducted during Rabi 2017-18 at College of Agriculture, CAU, Imphal, Department of Entomology with 42 local Manipuri rice cultivars along with Susceptible check (Liemaphou). During the study period of whorl maggot infestation observed during 30, 45 and 60 DAT in terms of percent leaf damage ranged from 2.23 to 5.64. The rice case worm infestations were observed only in the early crop stage during the study period, the entries Shangao (2.50 Percent damage leaves) and Tatha (2.66 Percent damaged leaves) recorded lowest incidence. Whereas standard check (5.79) and Napduina (5.30. recorded the highest incidence. The incidence of the two hoppers viz. BPH and GLH were low during study period. No severe symptoms of BPH infestations were recorded and also no symptoms of hopper-transmitted diseases were also recorded. The average population of BPH among entries was recorded lowest in Phouren Phoujao with 0.10 population per hill and highest leimaphou with 0.83 population per hill.