Abstract:
ABSTRACT
The experiment was conducted at the experimental field of Sher-e-Bangla
Agricultural University, Dhaka, Bangladesh during the period from October
2015 to April 2016 to study the effect of integrated use of urea and
vermicompost on the growth and yield potential of boro rice(BRRI dhan24). The
experimental treatments included T
= No chemical fertilizer, no organic manure
(Control), T
2
=140 kg N ha
-1
1
from urea, T
=120 kg N from urea + 20 kg N
substituted by vermicompost, T
4
3
=100 kg N from urea + 40 kg N substituted by
vermicompost, T
=80 kg N from urea + 60 kg N substituted by vermicompost,
T
6
5
=60 kg N from urea + 80 kg N substituted by vermicompost, T
=40 kg N from
urea + 100 kg N substituted by vermicompost, T
8
7
=20 kg N from urea + 120 kg N
substituted by vermicompost, T
= 140 kg N substituted by vermicompost. The
experiment was laid out in Randomized Complete Block Design (RCBD) with
three replications. Results showed that different levels of nitrogen and
vermicompost significantly increased contributing characters and yield of rice.
The tallest plant (110.3 cm) was produced in 80 kg N from urea + 60 kg N
substituted by vermicompost. The maximum total number of tiller and effective
tiller hill
-1
9
, Panicle length, number of filled grains panicle
-1
also recoeded from
the same treatment . The highest grain yield (6.86 t ha
-1
) was obtained from the
same package. The minimum grain yield (2.35 t ha
-1
) was produced from control
treatment. The highest N, P, K and S concentration in grain was recorded from
80 kg N from urea + 60 kg N substituted by vermicompost treatment. The
highest N, P, K and S concentration in straw was recorded from 80 kg N from
urea + 60 kg N substituted by vermicompost treatment. . The highest N, P, K and
S uptake by grain and straw of boro rice was recorded from same combination
(T
5
).Thus the treatmen packageT
(80kg N from urea+60kg N from
vermicompost ) found as remunerative in augmending the yield of boro rice at
the studied location (AEZ 28).
5
Description:
A Thesis
Submitted to the Faculty of Agriculture, Dept. of Soil Science
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
SOIL SCIENCE
SEMESTER: JANUARY-JUNE, 2016
