Abstract:
A field experiment was conducted in the experimental field of Sher-e-Bangla
Agricultural University to find out some new dimension management approaches against
sucking insect pests of brinjal, cultivated during Rabi season (November, 2021 to
February, 2022). The experiment was laid out in Randomized Complete Block Design
(RCBD) with three replications. The experimental treatments were T
1
= Fenpropathrin
(Danitol 10EC) @ 1ml/L of water + Clean cultivation; T
2
= Abamectin (Vertimec 1.8 EC)
1.2 ml/ L of water+ alternating spray of detergent mixed soapy water @ 5g/L of water;
T
3
= Imidacloprid (Admire 20 SL) @ 0.5 ml/L of water+ alternating spray of Bioneem
Plus @ 1m/L of water; T
4
= Diafenthiuron (Polo 500 SC) @ 1ml/L of water + Clean
cultivation; T
5
= Untreated control. Treatment T
3
contributed to reduce the highest
number of leaf hopper, aphid, whiteflies, mealybug, percent leaf infestation and plant
infestation by leaf hopper, aphid, whiteflies and mealybug were 5.72 leaf hopper/plant,
2.79 aphid/plant, 1.14 whitefly/plant, 2.12 mealybug/plant, 13.45% leaf/ five plant,
9.20% leaf/five plants, 5.66% leaf/five plants, 13.89% plant/plot, 13.89% plant/plot,
8.33% plant/plot, 8.33% plant/plot respectively. T
3
also showed the best performance for
single fruit weight (34.66 g) and yield (25.57 ton/ha) of brinjal.
Description:
A Thesis
Submitted to Department of Entomology,
Faculty of Agriculture.
Sher-e-Bangla Agricultural University,
Dhaka-
In partial fulfillment of the requirements for the degree of
MASTERS OF SCIENCE (MS)
IN
ENTOMOLOGY
