POPULATION EMERGED AND DAMAGE ASSESSMENT OF DIFFERENT STORED GRAINS BY
ANGOUMOIS GRAIN MOTH AND SITOTROGA
CEREALLELA (OLIVIER)
Tahmina Akter*,
Rupali Khatun, Ayesha Akter and Md. Mahmudul Hasan
Sohel
Abstract
Experiments
on population emerged and damage
assessment of three stored cereals, such as rice, wheat and maize by angoumois
grain moth, Sitotroga cerealella
(Olivier) were conducted in the Entomology laboratory, Sher-e-Bangla Agricultural
University, Bangladesh during the period from May to December, 2014. Adults
emerged of angoumois grain moth for 1st, 2nd and 3rd
generations varied significantly for different stored grains. The highest
number of adults (81.75 - 406.75) emerged in wheat grains, while the lowest
(9.50- 48.50) in rice. In maize, number of adults emerged 43.75 to 133.00 at 1st
to 3rd generation. Maximum infestations were recorded in wheat
grains and the lowest is rice for 43.50% to 8.70% in three generations of the
insect. At the different generations the highest weight loss of grain was
occurred in wheat and the lowest in rice. In wheat, weight loss ranged from
43.50 to 14.29% in 3rd to 1st generation. For rice it was
21.63 to 10.15%. For maize it was 35.25 to 13.51%. Percent of infestation of
the stored cereals was always positively correlated with percent of weight
loss.
Key Words: Angoumois grain Moth (Sitotroga cerealella), damage
assessment, stored grain, weight loss
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