Abstract:
The experiment was undertaken at the field of Sher-e-Bangla Agricultural
University, during rabi season (October to March) of 2014-15 to study the
effect of nitrogen and phosphorus on growth and yield of rapeseed(BARI
Sarisha-14). In this experiment, the treatment consisted of four different N
levels viz. N
1
1
0
= 0 kg ha
-1
, N
1
= 90 kg ha
, and four different level of P viz. P
ha and P
3
=35 kg ha
-1
0
-1
, N
2
= 120 kg ha
= 0 kg ha
-1
, P
1
-1
and N
= 15 kg ha
. The experiment was laid out in two factors Randomized
Complete Block Design (RCBD) with three replications. The seeds were sown
at therate of 8 kg ha
-1
. The 150 kg ha
-1
N gave the highest plant height, number
of leaves per plant, number of branches per plant, length of siliquae, number of
siliquae per plant, number of seed per siliquae, thousand seed weight. The
maximum yield of seed per hectare (1.43 t) was obtained from 150 kg ha
N.
The highest number of siliquae per plant, thousand seed weight, seed yield
(1.45 t ) was recorded with 35 kg ha
-1
P. The interaction between different
levels of N and P was significantly influenced on almost all morphological
parameters and yield contributing characters including seed yield. The
maximum value of morphological parameters, yield contributing characters
-1
3
= 150 kg ha
, P
2
= 25 kg
-1
-
- and seed yield of rapeseed were observed with the combined dose of 150 kg
ha
-1
N along with 35 Kg ha
-1
P whereas the lowest values were obtained from
control, 0 kg/ha N and 0 kg ha
-1
P treatment combination. The maximum yield
of seed per hectare (1.64 t) was obtained from 150 kg ha
-1
N with 35 Kg ha
P
treatment combination. The highest N, P and K concentration in stover and soil
was recorded from 150 kg ha
-1
N with 35 kg ha
-1
P treatment.
-1
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, 2015
