Year 2010
http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/2778
2024-03-29T03:35:38ZEFFECT OF REDUCED LIGHT INTENSITIES ON GROWTH AND YIELD OF TWO CUCURBITS
http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/2532
EFFECT OF REDUCED LIGHT INTENSITIES ON GROWTH AND YIELD OF TWO CUCURBITS
KABIR, MD. HEADAYET ULLAR
The experiments were carried out at the research farm of Sher-e-Bangla Agricultural
University. Sher-e-Bangla Nagar, Dhaka-1207 to investigate the growth and yield
performance of two cucurbits (viz, bottle gourd and ash gourd) under four different
levels of light intensities (100. 75, 50 and
25% PAR).The experiments were laid out
following Randomized Complete Block Design (RCBD) with three replications.
After crop establishment, nylon nets of different sieve sizes were used to create
treatments of different reduced light and light intensity was measured by a light
meter. Morphological characters like internode length. and individual leaf area
increased whereas number of leaves plani', branches plant" and individual fruit
weight were decreased due to the reduction of light levels in the vegetables. At
25% PAR level, the number of leaves plant" decreased markedly in cucurbits,
bottle gourd and ash gourd. Main stem length, stem weight ratio remained almost
unchanged in bottle gourd and ash gourd under different light levels. Leaf weight
ratio (LWR) slightly reduced in both bottle gourd and ash gourd. Compared to
100% PAR the total thy matter (TDM) of bottle gourd and ash gourd did not
affected by reduction of light levels up to 75% PAR. The highest dry matter yield
plant" (634.53 g and 556.47 g) were achieved from 100% PAR level in bottle
gourd and ash gourd. respectively. At 100% PAR level, the fruit yield were 42.40
ha" in bottle gourd and 44.13 tha" in ash gourd. Significant fruit yield reduction
was obscrvcd at 25% PAR in both ash gourd and bottle gourd. The bottle gourd
provided significantly higher yield (52.42 t ha") at 75% PAR level compared to hill
sunlight. The higher fruit yield was the product of higher fruit plant" and higher
individual fruit weight. These results suggested that bottle gourd is more suitable as
under storey crop compared to ash gourd.
A Thesis
Submitted to the Faculty of Agriculture
Slier-c-Bang/a Agricultural University, Dhaka
In partial Jitifuilment of the requirements
for the degree
of
MASTER OF SCIENCE (MS)
IN
AGRICULTURAL BOTANY
SEMESTER: JANUARY-JUNE, 2010
2010-06-01T00:00:00ZEFFECT OF SOWING DATES ON GROWTH AND YIELD PERFORMANCE OF SOME SELECTED WHEAT (Triticwn aestivum L) GENOTYPES
http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/339
EFFECT OF SOWING DATES ON GROWTH AND YIELD PERFORMANCE OF SOME SELECTED WHEAT (Triticwn aestivum L) GENOTYPES
AHMAD, GAZI ASHRAF UDDIN
The experiment was carried out at the experimental field of Sher-e-Bangla
Agricultural University, Dhaka during November 2009 to March 2010 to observe
the effect of sowing dates on growth and yield performance of some selected
wheat genotypes. The experiment comprised of two factors, viz. Factor A: Sowing
dates (4 sowing dates) - Sowing on 17 November, 2009: Sowing on 30
November, 2009: Sowing on 15 December, 2009 and Sowing on 30 December.
2009 and Factor B: Wheat genotypes (9 wheat genotypes)- BAW-1064. Sourab,
4 Prodip, Fang-60. Gourab. Sufi. Shatabdi. Pavan-76 and Bijoy. The experiment
was laid out in Two Factor Randomized Complete Block Design (RCBD) with
three replications. Data on different yield contributing characters and yield were
recorded and significant variation was recorded for sowing dates, wheat
genotypes and their interaction effect. At 30, 40. 50. 60 DAS and harvest the
longest plant (45.09 cm. 66.40 cm, 82.56 cm. 86.20 cm and 89.83 cm) was
recorded from sowing on 30 November. 2009 and the shortest plant (40.7$ cm,
59.51 cm. 74.99 cm, 77.87 cm and 80.65 cm) from sowing on 30 December,
2009. The highest grain yield hi1 (3.64 ton) was found from sowing 30
November. 2009, whereas the lowest (3.15 ton) was recorded from sowing 30
December, 2009. At 30, 40, 50, 60 DAS and harvest the longest plant (45.36 cm,
66.34 cm, 82.77 cm. $6.84 cm and 90.50 cm) was obtained from Gourab, whereas
the shortest plant (40.70 cm. 61.20 cm. 76.44 cm. 79.57 cm and 81.64 cm) was
recorded from Bijoy. The highest grain yield ha (3.67 ton) was found from
Sourab and the lowest (3.10 ton) was observed from 13i joy. At 30, 40. 50. 60 DAS
and harvest the longest plant (49.41 cm. 71.85 cm, 89.72 cm. 94.24 cm and 98.36
cm) was observed in sowing on 30 November. 2009 x Gourab, again the shortest
plant (39.37 cm, 56.89 ciii. 71.63 cm. 73.79cm and 76.31 cm) was recorded from
sowing on 30 December. 2009 x Bijoy. The highest grain yield hi' (4.15 ton) was
found from sowing on 30 November. 2009 c Sourab. whereas the lowest (2.85
ton) from sowing on 30 December, 2009 x Shatabdi. The variety Gourab provided
better and steady yield in case of first, second and third sowings whereas. Gourab
and BAW-1064 provided better yield when sown on 30 November. However, the
yield was reduced in case of all the varieties when sown on 30 December.
2010-12-01T00:00:00ZEFFECT OF TRANSPLANTING DATES ON THE GROWTH AND YIELD OF HYBRID RICE (Oryza saliva L.) VARIETIES IN AUS SEASON
http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/338
EFFECT OF TRANSPLANTING DATES ON THE GROWTH AND YIELD OF HYBRID RICE (Oryza saliva L.) VARIETIES IN AUS SEASON
HOSAIN, MD. TOFAIL
A field experiment was conducted at the Agricultural Botany Experimental field of
Sher-e-Bangla Agricultural University (SAU), Dhaka during Aus season in March to
July 2010, with a view to study the effect of transplanting dates on the growth and
yield of hybrid rice varieties along with one modem variety. The experiment
consisted of two levels of treatments viz. A: Three varieties where two of them were
hybrids and one was inbred: Fleera2, Aloron (Hybrid) and BRRI dhan48 (Inbred). B:
Four transplanting dates: 16°' March. 31 March, 150' April and 301h April. The
experiment was laid out in randomized complete block design with three
a
replications./perimental results showed that transplanting dates and varieties
individually had significant effect on the growth and yield parameters like plant
height, number of total tiller hill, leaf area hilF1 . total dry weight (g hilt'), light
interception percent, chlorophyll content at flag leaf stage, number of effective tiller
hilt', panicle length, number of filled spikelet panicle', number of unfilled spikelet
panicle1, number of total spikelet panicle', spikelet filling percent, grain yield (t hi
5. straw yield (t ha'), biological yield (t ha') and harvest index (%)fFhe results
revealed that 16° March transplanting gave the highest grain yield (3.82 t ha
Chlorophyll content Was higher in Heera2 followed by, Aloron. In contrast chlorophyll
content was lower in BRRI dhan48. Among the varieties BRRI dhan48 gave the
highest grain yield (3.5 It ha1) but both the hybrid varieties Heera2 (3.03 t ha') and
Aloron (2.77 t ha4) gave lower grain yield due to higher spikelet sterility because of
more sensitiveness of hybrid rice varieties to high temperaPire and low sunshine hour
at grain filling stage. The combined effect of transplanting dates and variety had also
significant effect on yield and yield contributing characters. BRRI dhan48
transplanting on 161' March showed highest grain yield attaining good yield
contributing characters.
2010-12-01T00:00:00ZTILLERING, DRY MATTER ACCUMULATION AND PRODUCTIVITY OF HYBRID RICE IN AMAN SEASON
http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/337
TILLERING, DRY MATTER ACCUMULATION AND PRODUCTIVITY OF HYBRID RICE IN AMAN SEASON
MAHMUD, JUBAYER-AL
A field experiment was conducted at the experimental field of Sher-e-Bangla
Agricultural University during July to December 2010 to find out the effect of
1, 2 or 3 seedling(s) per hill on growth. yield and yield components of a
modern inbred (BRRI dhan49) and four hybrid (BRRI hybrid dhan2. Heera,
La and Aloron) transplant Atnan rice varieties. The experiment was laid out
in factorial randomized complete block design with three replications. Results
showed that rice cultivars differed significantly in all growth characters, such as,
plant height, tillers number, chlorophyll content, dry matter weight of different
plant pafls, panicle length, filled grain, unfilled grain, grain filling percentage,
1000-grain weight, grain yield and straw yield. All the varieties exhibited higher
amount of chlorophyll over inbred BRRI dhan49 in their flag leaf. Leaf dry matter,
stem dry matter and total dry matter accumulation ability higher in inbred BRRI
dhan49 compared to all studied hybrid rice varieties. The inbred variety BRRI
dhan49 produced the highest grain (5.58 t hi') and straw yield (8.13 t hi').
Numbers of seedling(s) per hill had remarkable influence on number of total
tillers per hill and total dry matter production and single seedling per hill gave
the highest grain yield (4.20 t hi'). The higher grain yield was attributed
mainly to the number of effective tillers per hill, filled grains per panicle and
1000-grain weight. Remarkable grain and straw yield were found from the
interaction of BRRI dhan49 planted 1 seedling per hill.
2010-12-01T00:00:00Z