Abstract:
An experiment was conducted in the experimental field of Sher-e-Bangla
Agricultural University, Dhaka to determine the effect of different nitrogen fertilizer
doses and various irrigation levels on growth and yield of mustard during the period
from November 2019 to February 2020. The experiment consisted of four levels of
nitrogen viz.control-0 kg N ha
-1
(N
0
), 90 kg N ha
ii
-1
(N
1
),120 kg N ha
-1
) and 150 kg
N ha
-1
(N
3
) and 3 levels of irrigation viz. control - no irrigation (I
0
), one irrigation at
25 DAS (I
1
) and two irrigations at 25 and 50 DAS (I
2
). The experiment was laid out
in two factors Randomized Complete Block Design (RCBD) with three replications.
Considering the application of nitrogen, N
2
(120 kg N ha
-1
) showed the best results
in terms of yield and yield contributing parameters such as number of siliqua plant
(78.30), length of siliqua (4.57 cm), number of seeds siliqua
-1
(32.96), 1000 seed
weight (4.53 g), seed yield (1.40 t ha
-1
) and harvest index (35.35%) whereas control
treatment N
0
(0 kg N ha
-1
(N
2
) gave the lowest yield. Considering irrigation treatments I
2
(Two irrigations at 25 and 50 DAS) gave best results on growth, yield and yield
contributing parameters. The highest number of siliqua plant
-1
(78.78), length of
siliqua (4.58 cm),number of seeds siliqua
-1
(32.80), 1000 seed weight (4.46 g), seed
yield (1.41tha
-1
), stover yield (2.62 t ha
-1
) and harvest index (34.95%) were recorded
from I
2
whereas control treatment I
0
gave the lowest yield. Regarding combined
effect, N
2
I
2
showed the highest number of siliqua plant
-1
(87.63), length of siliqua
(4.81 cm), number of seeds siliqua
-1
(37.63), 1000 seed weight (5.00 g), seed yield
(1.61 t ha
-1
), stover yield (2.73 t ha
-1
) and harvest index (37.62%) followed by N
3
treatment. Hence, the results summarized that different Nitrogen and/or irrigation
levels had a significant and positive effects on growth, yield and yield contributing
parameters of mustard and these can be considered essential practices for higher
mustard production.
Description:
A Thesis
Submitted to the Department of Agricultural Botany,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements for the degree of
MASTER OF SCIENCE
IN
AGRICULTURAL BOTANY
SEMESTER: JANUARY-JUNE, 2021
