Abstract:
Present work was carried out in the experimental field of Department of
Entomology, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh in order to
assess the population abundance and eco-friendly management of insect pests of
broccoli. The experiment was conducted in randomized complete block design
(RCBD) with three replications. The treatments used in the experiment are
Emamectin benzoate, Spinosad, Buprofezin, Imidacloprid, neem seed kernel
extract, Lambda cyahlothrin and control (no pesticide). Four insect pests were found
majorly in the broccoli field such as cabbage caterpillar, diamond back moth,
cabbage aphid and flea beetle. Their peak population was recorded 1.98, 0.50,
238.62 and 2.98 per 5 plant at 51
st
, 6
th
, 7
th
and 3
rd
Standard week respectively.
Among seven treatments, Emamectin benzoate observed the least number of
population density the broccoli field. Population density of cabbage caterpillar,
diamond back moth, cabbage aphid and flea beetle was 0.54, 0.16, 18.33 and 0.96
per plant whereas in all cases the highest population was recorded from the control
treatment. Highest yield (23.14 ton/ha) of broccoli obtained from Emamectin
benzoate So, Emamectin benzoate can be used as an eco-friendly agent in
controlling insect pests of broccoli.
