Dept. of Agroforestry and Environmental Science
http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/2801
2024-02-25T00:52:33ZCALCIUM INDUCED CHANGES IN EARLY SEEDLING GROWTH OF RICE (Oryza sativa L.) UNDER SALT STRESS
http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/4934
CALCIUM INDUCED CHANGES IN EARLY SEEDLING GROWTH OF RICE (Oryza sativa L.) UNDER SALT STRESS
ASRAFI, MOST. MAHMUDA
Salt stress is a severe limiting factor for rice production worldwide. So a pot
experiment was conducted at the research field of the Department of Agroforestry and
Environmental Science, Sher-e-Bangla Agricultural University, Dhaka during the
period from February 2021 to April 2021 to find out the effect of calcium in
mitigation of salt stress in BRRI dhan 28 (inbreed) with nine treatments in
combination with three doses of NaCl (0 mM, 50 mM and 100 mM) and three doses
of CaCl
2
(0 mM, 2.5 mM and 5 mM) in completely randomized design with three
replications. Salt stress drastically damaged morpho-physiological attributes and
growth performance of rice in dose dependent manner. In contrast use of 2.5 mM
CaCl
2
under salt stress had positive impact on plant height, relative growth rate,
number of leaves per plant, length of flag leaf, width of flag leaf, fresh weight of
plant, dry weight of plant, relative water content (RWC) and SPAD value at 25, 40
and 55 at days after sowing (DAS) under both level of salt stresses. But addition of 5
mM CaCl
2
showed good result under 50 mM NaCl stress only. So, addition of 2.5
mM CaCl
2
in fertilization process might be a solution for rice production under salt
stress.
A Thesis
Submitted to the Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
AGROFORESTRY AND ENVIRONMENTAL SCIENCE
2021-01-01T00:00:00ZEFFECT OF N AND P ON THE PERFORMANCE OF SPINACH (Spinacia oleracea) IN ROOFTOP AND FARM
http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/4933
EFFECT OF N AND P ON THE PERFORMANCE OF SPINACH (Spinacia oleracea) IN ROOFTOP AND FARM
JOHRA, MST. FATEMA TUJ
The experiment was conducted at the rooftop of Soil Science Department and
research farm of Sher-e-Bangla Agricultural University, Dhaka, during the period from
October 2020 to December 2020 to study the performance of spinach in the rooftop
and farm. The experiments were laid out in RCBD design with three replications. The
study consists of two factors. Factor A: Three levels of nitrogen N₀ (control), N₁ (56 kg
ha¯¹), and N₂ (84 kg ha¯¹), and Factor 2: Three levels of phosphorus P₀ (control), P₁ (36
kg P
2
O
5
ha¯¹) and P₂ (57.5 kg P
2
O
5
ha¯¹). Haldibari, local variety seed was used in this
experiment. Different growth and yield contributing parameters were recorded to
determine the optimum dose of N and P for growing on rooftop and farm. The result
reveals that N₁ (56 kg ha¯¹) is optimum dose for growing spinach on both rooftop and
farm whereas, P₁ (36 kg P
2
O
5
ha¯¹) and P₂ (57.5 kg P
2
O
5
ha¯¹) are optimum dose for
rooftop for farm condition respectively. Among the treatment combination, N₁P₁ (56
kg/ha N + 36 kg/ha P₂O
5
) seems to be more suitable for getting higher yield in both
rooftop and farm.
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka
In partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
AGROFORESTRY AND ENVIRONMENTAL SCIENCE
2021-01-01T00:00:00ZSHADE INDUCED EFFECT ON GROWTH PERFORMANCE OF DIFFERENT CAULIFLOWER (Brassica oleracea var. botrytis) VARIETIES
http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/4932
SHADE INDUCED EFFECT ON GROWTH PERFORMANCE OF DIFFERENT CAULIFLOWER (Brassica oleracea var. botrytis) VARIETIES
SAHA, GOPAL
In agroforestry system, light is a limiting factor for maximum crop production.
Therefore, a pot experiment was conducted in the Field Laboratory of the Department
of Agroforestry and Environmental Science, Sher-e-Bangla Agricultural University,
Dhaka- 1207, during the months of October 2020 to March 2021 with three cauliflower
varieties viz. V
1
(Chandi), V
2
(Snow White), V
3
(Indian Crown) under four shade
treatments/light intensities, [100%, 75%, 50% and 25% light intensity which indicate
control (S
0
), S
1
, S
2
and S
3
, respectively] to evaluate their morpho-physiological and
growth performances. Low light stress [mainly 50% light intensity (S
2
) and 25% light
intensity (S
3
)] substantially reduced the germination rate, plant height, plant weight
(fresh and dry weight), leaves number, leaf length, leaf width, flowering dates, stem
diameter, photosynthetic performance (SPAD value) of different cauliflower varieties.
However, considering the obtained findings Snow white variety showed less negative
performance than the other varieties under shaded condition. So, among the tested
cauliflower varieties Snow white might be suitable for shaded condition with low light
intensities.
A Thesis
Submitted to the Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
AGROFORESTRY AND ENVIRONMENTAL SCIENCE
2021-01-01T00:00:00ZMORPHO-PHYSIOLOGY AND YIELD OF TOMATO (Solanum lycopersicum L.) VARIETIES AFFECTED BY DIFFERENT LEVELS OF LIGHT INTENSITY
http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/4931
MORPHO-PHYSIOLOGY AND YIELD OF TOMATO (Solanum lycopersicum L.) VARIETIES AFFECTED BY DIFFERENT LEVELS OF LIGHT INTENSITY
MANDAL, SUMIT
Light stress is a limiting factor for crop production, especially in agroforestry system.
A pot experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka-
1207, during the months of October 2019 to mid-April 2020 in a completely
randomized design (CRD) to determine the effect of low light on morpho-physiology
and yield of tomato. Three tomato varieties viz. BARI Tomato-2, BARI Tomato-15,
BARI Tomato-16 were exposed to four light intensities including 100% (S
0
, control),
75% (S
1
) , 50%
(S
2
)
,
and 25% (S
3
) to evaluate their performances. Light stress
(mainly S
2
and S
3
) substantially hampered the plant growth, development as well as
yield. Low light stress primarily reduced the photosynthetic performance of plants
which contributes in reduction of plant height, number of primary branches, and
leaves of all tomato plants. Moreover, low light intensity negatively affected the
fresh and dry weight of tomato. It also decreased the number of fruits, fruit length,
fruit diameter, and individual fruit weight in all varieties. As a result, plant wise
tomato production was hampered seriously with low yield. In comparison with
control, S
1
condition decreased tomato yield per plant by 22.5, 16.9 and 15.3% in
BARI Tomato-2, BARI Tomato-15 and BARI Tomato-16, respectively. Under S
2
condition, tomato yield per plant decreased by 38.7, 37.4, and 32.7% in BARI
Tomato-2, BARI Tomato-15 and BARI Tomato-16, respectively, in contrast to
control. Lastly, S
3
condition decreased tomato yield per plant by 73.1, 67.0 and
62.1% in BARI Tomato-2, BARI Tomato-15, and BARI Tomato-16, respectively,
compared with control. From this result, it was clear that BARI Tomato-16 was more
tolerant to low light stress than BARI Tomato-2 and BARI Tomato-15.
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE
IN
AGROFORESTRY AND ENVIRONMENTAL SCIENCE
2021-01-01T00:00:00Z