SAUL Archive
Not a member yet
4890 research outputs found
Sort by
DETERMINING THE OCCURRENCE AND DISTRIBUTION OF VIRUSES CAUSING DISEASES ON PUMPKIN FOR DEVELOPING EFFECTIVE MANAGEMENT STRATEGIES
Get PDFAbstract
Pumpkin (Cucurbita moschata) belongs to the family Cucurbitaceae, is an important crop
in the tropical and subtropical regions of the world. Due to high content of vitamin A, it
is very nutritious and can play a vital role in meeting the vegetable shortage and
nutritional problems. Diseases caused by viruses have a negative effect on the yield of
pumpkin and other cucurbit crops. A survey was conducted to collect virus infected leaf
samples of pumpkin to find the occurrence and distribution of viral diseases of pumpkin
from three districts of Bangladesh. A field experiment was also conducted to determine
specific symptom (s) associated with Cucumber mosaic virus CMV of pumpkin to aid
visual diagnosis and serological detection and to find suitable management strategies for
pumpkin infecting CMV diseases. The experiment was conducted during October'2017
to April'2018. The experiment was laid out in RCBD with three replications in the field.
The seedlings with two cotyledons were inoculated with CMV and then transplanted in
main field for management this virus. During survey, ten (10) characteristics symptoms
were recorded as indicator of virus infection through visual observation. Among these
symptoms, four symptoms showed positive to serological test by using CMV antiserum.
By observing color of ELISA test, it was concluded that mosaic, yellow mosaic, chlorosis
and hardy leaves symptoms showed positive to CMV. In field management experiment,
CMV incidence and severity both showed the lowest in treatments T I (Inter crop
coriander) which was 21.10% and 11.11%, respectively whereas disease incidence (%)
and disease severity (%) both were maximum in T6 (Control) and which were 70.84(%)
and 26.67(%) respectively. In case of growth and yield attributes, there were significant
variations found in all attributes. Thus, in this study the effective management was
intercropping by coriander. A negative relation between CMV disease severity (%) and
yield (in kg) per treatment indicated that with the increase of disease severity (%), yield
of pumpkin decreased. On the contrary, positive relation between CMV disease severity
(%) with aphid population (no.) which indicated that with the increase of aphid
population (no.), infection rate is increased. Inoculated CMV was identified in pumpkin
leaves by visual observation and six (6) major categories of viruses symptoms were
found in field viz. mosaic, yellow mosaic, fern leaf, chlorotic spot, leaf distortion and
hardy leaves by visual observation. Among them, in serological test, barrier crop maize,
yellow trap, chemical Malathion 57 EC and control treatments of pumpkin were
infected with CMV which symptoms categories were mosaic, yellow mosaic, leaf
hardening, curling and chlorosis shown positive during serological test by using CMV
antiserum.
Keywords: occurrence, distribution, identification, serology, cmv, pumpkin, aphid population,
management strateg
STUDY ON THE DIVERSITY OF INSECT FORAGERS AND POLLINATION EFFECT ON INDIAN JUJUBE (Ziziphus mauritiana) YIELD
Get PDFA Thesis
Submitted to Department of Entomology,
Faculty of Agriculture.
Sher-e-Bangla Agricultural University,
Dhaka-
In partial fulfillment of the requirements for the degree of
MASTERS OF SCIENCE (MS)
IN
Prof. Dr. Ayesha Akter
Supervisor
ENTOMOLOGYAn experiment was carried out at Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
during the period from September, 2022 to February, 2023 to know the diversity of insect
foragers and pollination effect on Indian jujube (Ziziphus mauritiana) yield. Five treatments viz.,
without netting, netting with the net of .5mm hole, netting with the net of 2mm hole, netting
with the net of 3mm hole and netting with the net of 5mm hole were included in this study. The
experiment was laid out in Randomized Complete Block Design (RCBD) with four replications.
The survey found sixteen insect species visiting Indian jujube plants. These insects are from the
order hymenoptera, diptera, hemiptera, and coleoptera. Hymenopterans dominated throughout
the season. Apis cerana (29.06%) was the most frequent visitor followed by A. florea A.
dorsata (6.42%) and A. mellifera . A. cerana spent 4.47 seconds per bloom. A. cerana
and A. mellifera had the highest ( ) and lowest ( ) mean foraging rates respectively. The
diversity index for genus was found ( ) and for species ( ) respectively. The cyme bears
hermaphrodite and male flower at the ratio of ( ). Cyme without netting set the highest
(3.50±0.29) fruit. Netting with the net of .5mm hole and netting with the net of 2mm hole did
not set any fruit. Without netting, yield reached 40.7 kg/plant which was highly significant from
rest of the treatments. From this study it is evident that the role of pollinators on Indian jujube is
very significant
REPRODUCTIVE FITNESS AND PHENOLOGY RESPONSES OF SAU PERILLA-1 TO GROWING DEGREE DAYS OBSERVED ON DIFFERENT TRANSPLANTING DATES
Get PDFA 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
AGRONOMYSAU Perilla-1 (Golden Perilla BD) is a latest oil crop variety enriched with Omega-3 fatty acid,
which is introduced by Sher-e-Bangla Agricultural University in 2021. The seed contains ⁓40%
edible oil and is recommended for growing in Kharif-2 season when no oil crop is grown in
Bangladesh. However, for Robi seasonal trail, the crop was sown on 21 November (D
1
), 28
November (D
2
), 05 December (D
3
), and 12 December (D
4
) with 40 cm × 40 cm (S
1
), 40 cm ×
30 cm (S
2
), and 40 cm × 20cm (S
3
) planting configurations maintained in each of the dates.
The research was aimed mainly on thermal effects on phenological parameters (germination,
flowering and biological yields) as evaluated by the Growing Degree Days (GDD) and Heat
Use Efficiency (HUE) over stover yield and grain yield of SAU Perilla-1. The results revealed
that sowing dates had significant effect on the yield variations as evaluated by the studied
parameters of the crop. However, D
2
showed the uppermost level of seed weight per plant. The
highest seed weight per plant was recorded due to the effect of S
3
and that of the value touched
at the bottom for S
2
. The maximum seed weight was recorded in D
2
S
3
and that of the lowest
was found in D
4
S
3
. The GDD values increased with increasing days to germination of seeds.
Sowing date strongly influenced the GDD requirement for germination of SAU Perilla-1. When
the crop was sown on D
1
, 75 days were needed accumulating 1670.4 ℉ for flowering of the
crop. The GDD requirement was highest (1802℉) in D
4
sowing treatment, when 82 days were
required to initiate flowering. The GDD requirement declined as sown on D
2
dates. The
results indicated that the variation in temperature prevailed under different dates of sowing.
HUE was higher in producing stover plant when sown on 21st November (D
1
) with second
highest grain production (4.10 mg/plant//℉/Day). Contrary to that the highest HUE for grain
(8.13 mg/plant//℉/Day) was yielded in D
2
sowing date although the stover production was
reduced from that of D
1
treatment found. When sowing is delayed, either of grain and stover
synthesis were lowered down as found in D
3
and D
4
treatment
EFFECT OF BIO-FERTILIZER WITH REDUCED AMOUNT OF CHEMICAL FERTILIZER ON GROWTH, YIELD AND QUALITY OF KOHLRABI VARIETY
Get PDFA 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
HORTICULTUREA field experiment was conducted at research field of Sher-e-Bangla Agricultural
University, Dhaka during the period from October 2020 to January 2021 in Rabi
season to study the on the effect of bio-fertilizer with reduced amount of chemical
fertilizer on growth, yield and quality of kohlrabi variety. The experiment consisted
of two factors, and followed Randomized Complete Block Design (RCBD) with three
replications. Factor A: Kohlrabi varieties (3) viz; V
1
= Quick star, V
= Challenger,
V
3
= Rapid and Factor B: Different fertilizer managements (3) viz; F
=
Recommended dose of NPK (Control), F
1
2
= 50 % NPK + 2 kg/ha biofertilizer, F
= 50
% NPK + 4 kg/ha biofertilizer and F
= 50 % NPK + 6 kg/ha biofertilizer.
Experimental results revealed that different varieties and application of different doses
of bio-fertilizers significantly influenced the growth, yield and quality of kohlrabi. In
case of different kohlrabi varieties the lowest yield (12.96 t ha
3
-1
2
) was observed in V
(Quick star) variety. Whereas cultivating Challenger (V
) variety gave the highest
fresh weight of knobs (128.12 g), dry weight of knob (8.16 g), knob diameter (6.43
cm), yield (14.24 t ha
-1
2
), magnesium content (0.89 %), potassium content (2.31 %),
manganese content (25.38 ppm) and vitamin C content (28.17 mg 100 g
). Among
different doses of bio-fertilizers application the highest fresh weight of knobs (140.64
g), dry weight of knobs (8.26 g), knob diameter (6.70 cm), yield (15.63 t ha
), and
nutrient status were observed in F
(50 % NPK + 6 kg/ha biofertilizer) treatment. In
case of combination, V
2
F
3
3
combination treatment gave the highest fresh weight of
knobs (150.67 g), yield (16.74 t ha
-1
), magnesium content (0.98 %), potassium content
(3.18 %), manganese content (34.98 %) and Vitamin C content (33.33 mg 100 g
) in
kohlrabi comparable to other treatment combination. Therefore, it was suggested that
cultivation of Challenger variety along with application of 50 % NPK + 6 kg/ha
biofertilizer (V
2
F
) combination treatment would help to influenced plant growth and
increase its ability to enhanced better yield and quality production of kohlrabi
RESPONSE OF POTATO YIELD AND QUALITY TO BIOCHAR AND ITS EFFECT ON SOIL PROPERTIES
Get PDFA 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
SOIL SCIENCEA field experiment was carried out at the experimental plot of Sher-e-Bangla
Agricultural University, Sher-e-Bangla Nagar, Dhaka-1207 during the period from
November, 2021 to March, 2022 in Rabi season to find out the effect of biochar on
yield and quality of potato tuber. In this experiment test crop variety was Diamant. The
experiment comprised of the following 9 treatments as T
= Control (No chemical
fertilizer and biochar), T
2
= RFD (Recommended Fertilizer Dose), T
ii
1
= RFD + Biochar
@ 1 t ha
-1
, T
4
= RFD + Biochar @ 1.5 t ha
-1
, T
5
3
= RFD + Biochar @ 2 t ha
= 75%
of RFD + Biochar @ 1 t ha
-1
, T
7
= 75% of RFD + Biochar @ 1.5 t ha
= 75% of
RFD + Biochar @ 2 t ha
-1
and T
9
= No chemical fertilizer + Biochar @ 2 t ha
. The
experiment was laid out in a Randomized Complete Block Design (RCBD) with three
replications. Data were recorded on different yield attributes, yield and quality of
potato and nutrient status of postharvest soil and significant variation was recorded for
different treatments. The maximum plant height (18.33, 35.28 and 56.94 cm) at 20, 40
and 60 DAP respectively) was recorded from T
3
-1
-1
, T
, T
8
treatment (RFD + Biochar @ 1 t ha
).
Biochar appeared to be a potential source of organic amendment. Tuber yield and
quality of potato significantly increased when biochar was applied in combination with
inorganic fertilizers. The maximum yield of tubers (29.77 t ha
-1
6
-1
) was recorded from T
treatment (RFD + Biochar @ 1 t ha
-1
) and the maximum marketable yield (71.67%)
was recorded from T
5
treatment (RFD + Biochar @ 2 t ha
-1
). The fertility and quality of
soil also improved to a great extent. From this study, it was found that biochar had
significant positive response for improving yield and quality of potato and also fertility
of the postharvest soil apprehensively due to application of biochar along with
recommended inorganic fertilizers
ADOLESCENTS' NUTRITION LITERACY AND HEALTH-RELATED BEHAVIOR: THE EFFECT OF COMPUTER-MEDIATED COMMUNICATION MEDIA
Get PDFAbstract
More and more young people are using the Internet for education and
entertainment, and the Internet influences them. This study looks at how 13- to
19-year-olds in Bangladesh describe how they use social media to get information
about nutrition. It also looks at how the information they get supports their healthrelated
behavior. We used research methods, a survey, and online and face-to-face
interviews. We analyzed 345 valid and complete responses using Smart PLSbased
Structural Equation Modelling (SEM). We found that the teenagers had a
satisfactory level of nutrition literacy, and that social media can promote healthand-nutrition-related
content. We also found that the nutrition literacy of
teenagers was unrelated to their behavior. Instead, their choices of content, their
sense of altruism, and different forms social support influence the way they use
media. These factors also reflected and reinforced their attitudes to health. This
study concludes with recommendations for influencing the nutrition- and health-
related behavior of teenagers.
Keywords: adolescent, nutrition literacy, health behavior, computer-mediated communication,
social media
EFFECT OF ZINC AND BORON ON GROWTH AND YIELD OF TOMATO IN SOILLESS CULTURE
Get PDFA 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 (MS)
IN
HORTICULTUREAn experiment was conducted to study the effect of zinc and boron on growth and yield
of tomato in soilless culture from October 2021 to September 2022 in the
Hortticulture Farm of Sher-e-Bangla Agricultural University. The experiment
consisted of two
factors: Factor A: Four Zn levels viz. Zn
0
ii
= 0 ppm zinc, Zn
1
= 1.0
ppm zinc, Zn
2
= 2.0 ppm zinc, Zn
3
= 0 ppm boron, B
1
= 3.0 ppm zinc and Factor B: Four B levels viz. B
0
=1.0 ppm boron, B
2
= 2.0 ppm boron, B
3
= 3.0 ppm boron. The
experiment was laid out
in Completely Randomized Design (CRD) with three
replications. BARI tomato 4 was used as plant materials. Different zinc and boron
levels influenced significantly on most
of the recorded parameters. The treatment Zn
2
(2.0 ppm zinc) showed the highest
number of fruits plant
-1
(33.70), fruit weight plant
(4.08 kg) and fruit yield (32.17 t ha
-
1
). Regarding boron treatment, B
2
(2.0 ppm boron)
showed the highest number of fruits
plant
-1
(33.96), fruit weight plant
(4.09 kg) and
fruit yield (32.34 t ha
-1
). In terms of treatment combination of zinc and boron, the
highest number of branches plant
-1
(6.25), number of fruits plant
-1
(34.90), average
fruit weight (61.32g), average fruit volume (86.67 cc), fruit weight plant
(4.30 kg)
and fruit yield (35.95 t ha
-1
) were recorded
from Zn
2
B
2
(2.0 ppm zinc + 2.0 ppm
boron) whereas the lowest was recorded from Zn
0
B
0
(0 ppm zinc + 0 ppm boron). The
highest °Brix content (5.83), ascorbic acid
content (18.46mg/100g FW) and titratable
acidity (1.05%) were recorded from the treatment
combinations of Zn
3
and
Zn
2
B
2
, respectively whereas the lowest ˚Brix content
(4.40), ascorbic acid content
(11.40mg/100g FW) and titratable acidity (0.70%) were recorded from
Zn
1
and Zn
3
B
3
, respectively. Again, the treatment combination of Zn
2
B
2
(2.0
ppm zinc +
2.0 ppm boron) gave the maximum fruit yield (35.95 t ha
-1
) and BCR (2.41) compared
to
other treatment combinations. So, the treatment combination of Zn
2
(2.0 ppm
zinc + 2.0
ppm boron) can be considered as the best compared to the rest of the
treatment combinations regarding achievement of tomato yield in soilless culture
EFFECTIVENESS OF KRISHI RADIO FOR DISSEMINATING FARM INFORMATION
Get PDFA Thesis
Submitted to Department of Entomology,
Faculty of Agriculture.
Sher-e-Bangla Agricultural University,
Dhaka-
In partial fulfillment of the requirements for the degree of
MASTERS OF SCIENCE (MS)
IN
AGRICULTURAL EXTENSION & INFORMATION SYSTEMAs a community radio, Krishi radio helps in disseminating agricultural information
quickly to the listener farmers. This research aimed to: i) investigate effectiveness of
Krishi radio for disseminating farm information as perceived by the listeners farmers;
ii) to determine some selected socio-economic characteristics of the Krishi radio
listener farmers; iii) to explore the contribution of the selected characteristics of the
listener farmers to their perceived effectiveness of Krishi radio and iv) to determine
the problems faced by the listener farmers to get agricultural information from krishi
radio with the suggestions to minimize the problems. Data were collected from
randomly selected 106 listener farmers of ‘Krishi Radio’ from Barguna sadar and
Amtoli upazilla of Barguna district. Findings reveled that majority (77.4%) of the
respondent listener farmers perceived moderate effectiveness of agricultural program
of Krishi radio and rest 22.6% of them perceived high effectiveness of agricultural
programs of Krishi radio for disseminating agricultural information. Based on
descending order of Standardized Effective Index (SEI), ‘timeliness of broadcasting
information’ ranked 1
st
followed by ‘adequacy of agricultural information’, ‘reliability
of agricultural information’ and ‘usability of agricultural information. Stepwise
multiple regression analysis showed that ‘time spend in farming’, ‘attitude towards
agricultural radio program’, and ‘education’ of the Krishi radio listening farmers had
positive contribution to their perceived effectiveness of Krishi radio for disseminating
agricultural information. Based on descending order of Standardized Problem Faced
Index (SPFI), ‘lack of radio for listening’ ranked 1
st
followed by, ‘limited broadcasting
time of agricultural program’ ‘weakness of network/signal’ and ‘lack of feedback
facility after hearing’. Based on these findings, it may be said that agricultural
programs containing usable, reliable and adequate information on innovations should
be broadcasted at suitable time by supplying radio to the listener farmers’ club,
strengthening of network and signal capacity of the radios, increasing broadcasting
time of agricultural program and increasing feedback facility with the listener farmers
for increasing effectiveness of Krishi radio for disseminating farm information among
all categories of farmers
GROWTH AND YIELD OF AROMATIC RICE AS INFLUENCED BY SEEDLING CLIPPING AND PLANTING DENSITY
Get PDFA 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
AGRONOMYA field experiment was carried out at Sher-e-Bangla Agricultural University, Dhaka,
Bangladesh, during the period from July to December, 2022 to investigate the efficacy
of seedling clipping and different planting geometry on the performance of an aromatic
rice variety BRRI dhan80. The experiment comprised of two factors; Factor A:
Seedling clipping (3) viz. C
1
= Control (no clipping); C
2
= 1/3rd top seedling clipping;
C
3
=1/2nd top seedling clipping and Factor B: Different planting geometry (4) viz. G
1
=
25 cm x 20 cm, G
2
= 20 cm x 20 cm, G
3
= 20 cm x 15 cm, and G
4
= 15 cm x 15 cm. The
experiment was laid out in randomize complete block design with three replications.
Results revealed that seedling and different planting geometry either individually or
combined showed significant variations in most of the characteristics of aromatic rice.
In case of seedling clipping, the effective tillers hill
-1
(14.52), panicle length (26.14 cm),
filled grains panicle
-1
(171.09), total grains panicle
-1
(190.07), 1000-grains weight
(24.59 g), grain yield (4.14 t ha
1
-1
), straw yield (7.94 t ha
) and harvest index (34.18 %) were observed in C
2
-1
), biological yield (12.09 t ha
(1/3rd top seedling clipping)
treatment. In case of different planting geometry, the maximum effective tillers hill
(15.31), panicle length (26.68 cm), filled grains panicle
1
1
(196.27), 1000-grains weight (25.30 g), grain yield (4.28 t ha
), biological yield (12.33 t ha
-1
-1
(179.00), total grains panicle
-1
), straw yield (8.05 t ha
) and harvest index (34.65 %) were observed in G
3
(20
cm x 15 cm) treatment. In case of combined effect, the maximum effective tillers hill
(16.23), panicle length (27.41 cm), filled grains panicle
1
1
(204.48), 1000-grains weight (26.52 g), grain yield (4.62 t ha
), biological yield (12.76 t ha
-1
-1
(189.05), total grains panicle
-1
), straw yield (8.14 t ha
) and harvest index (36.02 %) were observed in C
2
treatment combination. Based on the findings it was concluded that treatment
combination of 1/3rd top seedling clipping (C
2
) along with 20 cm x 15 cm (G
3
) planting
geometry has positive influence on BRRI dhan80 to have maximum yield attributes of
grain yield
EFFECT OF ORGANIC (COMPOST) AND INORGANIC FERTILIZERS ON GROWTH AND YIELD OF POTATO
Get PDFA 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
SOIL SCIENCEThe experiment was conducted at Sher-e-Bangla Agricultural University, Dhaka-1207
during the period from November 2021 to February 2022 to examine the effect of organic
(compost) and inorganic fertilizers on growth and yield of potato. The experiment
consisted of seven treatments viz. T
1
(100% RCF of NPKZnS; N
150
P
40
K
+ 0 t ha
-1
compost), T
2
(75% RCF of NPKZnS + 2 t ha
-1
compost), T
(75% RCF of
NPKZnS + 4 t ha
-1
compost), T
4
(75% RCF of NPKZnS + 8 t ha
-1
150
3
Zn
4
S
compost), T
(50%
RCF of NPKZnS + 2 t ha
-1
compost), T
6
(50% RCF of NPKZnS + 4 t ha
compost) and
T
7
(50% RCF of NPKZnS + 8 t ha
-1
compost). The experiment was laid out in
Randomized Complete Block Design (RCBD) with three replications. Significant
variation among the treatments was found for most of the parameter due to different
levels of organic (compost) and inorganic fertilizers. The treatment T
(75% RCF of
NPKZnS + 8 t ha
-1
compost) exposed the minimum days to first emergence (15.67 days)
and final emergence (17.00 days) while the maximum plant height (81.20 cm), number of
leaves plant
-1
(78.24), number of stem plant
-1
-1
4
(7.20), number of tuber plant
(7.92),
weight of tuber plant
-1
(277.50 g), tuber weight plot
-1
20
kg ha
-1
(14.43 kg) and tuber yield ha
(28.86 t) followed by T
3
(75% RCF of NPKZnS + 4 t ha
-1
compost) whereas the
treatment T
5
(50% RCF of NPKZnS + 2 t ha
-1
compost) performed the lowest results
regarding these parameters. Regarding the grading of potato, T
(75% RCF of NPKZnS +
8 t ha
-1
4
compost) treatment also showed the highest percentage of 28-45 mm grade tuber
(45.24%) followed by T
3
(75% RCF of NPKZnS + 4 t ha
-1
compost) (43.80%) treatment
whereas the minimum percentage (35.90%) was recorded from the treatment T
(50%
RCF of NPKZnS + 2 t ha
-1
compost). In case of post harvest soil, different treatments
showed non-significant variation on pH, organic matter and organic carbon content but
available P and S of post harvest soil affected significantly. The treatment T
(75% RCF
of NPKZnS + 8 t ha
-1
compost) showed the highest P (23.42 ppm) and S (28.47 ppm)
content of post harvest soil whereas the lowest P and S content (18.80 and 23.85 ppm,
respectively) was obtained from the treatment T
5
4
(50% RCF of NPKZnS + 2 t ha
compost). So, this treatment T
4
(75% RCF of NPKZnS + 8 t ha
-1
compost) can be
considered as the best treatment for potato production compared to other treatments