Abstract:
The experiment was conducted at the apiary of Sher-e-Bangla Agricultural
University (SAU), Dhaka during the period from January to June 2019 to study the
efficacy of some non-chemical methods in comparison to conventional chemical
pesticides against insect pests of gladiolus. The experiment was laid out in a
Randomized Complete Block Design (RCBD) with three replications. The
treatments were: (1) Neem oil @ 3ml/L water, (2) Neem oil @ 3ml/L water +
Trichogramma evanescense @ 0.5 gm/ 6 sq. m, (3) Neem seed kernel @ 200
gm/L water, (4) Neem seed kernel @ 200 gm/L water + Trichogramma
evanescense @ 0.5 gm/L 6 sq. m, (5) Ripcord 10 EC @ 2.0 ml/L water, (6) Radial
20 EC @ 3.0 ml/L water and (7) Untreated. The highest number of plants (54.66)
obtained in T
(Neem oil @ 3ml/L water). The highest number of pest population
derived in (T
1
7
) Untreated control and and followed by remained at T
(Radial 20
EC @3.0 ml/L water. The lowest pest population derived in T
(Neem seed kernel
@ 200 gm/L water + Trichogramma evanescense @ 0.5 gm/L) 6 sq. m at early,
mid and late stage of gladiolus respectively. The best outcomes has been obtained
from T
4
4
(Neem seed kernel @ 200 gm/L water + Trichogramma evanescense @
0.5 gm/L) and lowest outcome came from untreated control.
Description:
A Thesis
Submitted to the Department of Entomology
Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
ENTOMOLOGY
