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| Articles
by
M. M. Alam |
Total Records (
6 ) for
M. M. Alam |
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Md. A. Alim
,
M. M. Alam
,
S. Khandker
,
S. A. Ahmed
,
Ahsanul Haque
and
Nargis Akhter
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An investigation was undertaken to evaluate the impact of different crop residues on late
jute seed yield and organic matter content of soil. The plant height, number of branch/plant,
number of pod/plant, number of seeds/pod and seed yield/plant were significantly increased
with different crop residues. The performance in seed yield were dry jute leaves (89.30%)
> lentil straw (87.77%) wheat straw (43.28%) > compost (35.35%) > rice straw
(32.740%) > saw-dust (16.91%) over the control. The resources increased the soil organic
matter content in soil by 24.59, 22.92, 26.22, 19.67, 29.51 and 30.33% respectively over
the control indicating the enrichment of soil health. In correlation studies it was observed
that the jute seed yield parameters, the seed yield was highly correlated with plant height,
number of branches/plant and number of pods/plant. |
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Md. A. Alim
,
M. M. Alam
,
Ahsanul Haque
,
Nargis Akter
,
Zebun Naher
and
A. S. M. Iqbal Hossain
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An experiment was conducted to investigate the influence of fresh jute leaves as a source
of plant nutrients on late jute seed production. Fresh jute leaves were collected just after
harvest of jute crop and was incorporated to the soil at the rate of 0, 1, 2, 3, 4, 5 and 10
percent along with a recommended dose of chemical fertilizer (Urea-TSP-MP-Gypsum-Zincsulphate - Borax at the rate of 200-100-40-100-22-10 kg ha‾1 respectively). With the
increasing rate of fresh jute leaves pH of the soil successively decreased from 6.47 to 6.31
and organic matter content of the soil increased from 2.45 to 48.36 % and nutrient
contents in soil was also increased and of N, P, K and S were increased upto 47.36,53.00,
62.50 and 55.55 percent respectively. A highly significant increase in number of branch,
number of pod and seed yield was obtained with 4,5 and 10 percent of fresh jute leaves
and a spectacular increase was also found with 1,2 and 3 percent of fresh jute leaves. The
seed yield was significantly correlated with number of branches, number of seeds and
number of pods per plant. |
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M. I. U. Mollah
,
A. Khatun
,
M. M. Alam
,
A. H. Khan
and
N. E. Elahi
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A field experiment of hedgerow intercropping
of pigeonpea with rice and mungbean followed by blackgram and groundnut,
respectively, as alley crops was conducted to determine the effect of
hedgerow crop on the yield of alley crops, the productivity of hedgerow
crop and its contribution to the alley crops. Alley cropping of rice-blackgram
and mungbean-groundnut crop sequences with 1.5 and 2.5 m hedgerow distance
of pigeonpea along with sole cropping sequences were evaluated. Grain
yield of all crops were affected by hedgerow intercropping systems.
Significantly highest rice equivalent yields and gross returns were
obtained by hedgerow intercropping systems with 2.5 m hedgerow distance
for both the crop sequences in both 1995 and 1996. The highest gross
margin and the highest benefit-cost ratio (BCR) were resulted from hedgerow
intercropping at 2.5 m distance with rice-blackgram crop sequence and
the system was found profitable. |
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M. Maniruzzaman
,
M. M. Alam
,
F. I. M. Golam Wahed Sarker
,
M. T. Islam
and
M. N. Islam
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This study was undertaken at two locations in the central part of Bangladesh to assess the
performance of PVC and plastic pipe water distribution system for command area
development and irrigation time saving by minimizing water losses. In the system, total
discharge from deep tubewell (DTW) was diverted to two or three directions by using PVC
and plastic pipe of different lengths and diameters. Technical and economic feasibility of the
system were also evaluated. The conveyance loss was 2.80 to 9.50% in PVC and plastic
pipe whereas in earthen channel it varied from 30 to 33% in silty-clay loam soil, which
indicates that on an average 83% water can be saved by improved pipe distribution system.
The maximum pressure head in two-way flow condition was 4.25 m. The total head of DTW
developed due to the pipe distribution system was 16.52 m at the peak irrigation period,
which was below the limit of the total head of the DTW and did not create any problem on
pump unit. The motor speed varied from 1490-1500 rpm in two-way or three-way flow
conditions, which did not create any back-pressure on pump. By introducing the pipe
distribution system about 37 to 41% command area was increased in both locations. The
BCR of the pipe irrigation system varied from 2.74 to 1.43 on the basis of 15 to 45%
discount rates. The partial pipe distribution system in DTW area was highly economical
considering the BCR and IRR analysis. |
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S. M. E. Hassan
,
M.Sq. Rahman
,
M. F. Hossain
,
M.R. Amin
and
M. M. Alam
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An investigation was carried
out to ascertain the effect of planting density and nitrogen on the performance
of kaon. The planting density was regulated by the seed rate per hectare. Four
different seed rates (4, 6, 8 and 10 kg ha‾1) and five nitrogen
levels (0, 15, 30, and 60 ka ha‾1) were used for this study.
The result of the study revealed that the planting density significantly influenced
the yield and yield contributing characters such as plant population per square
meter, plant height, number of tiller per plant, effective tiller per plant,
grains per panicles, grain and straw yields. Nitrogen too significantly influenced
the yield and yield contributing characters except plant population per square
meter. The maximum grain yield (1.98 t ha‾1). The dose of 60
kg N ha‾1 produced the highest grain yield (1.87 t ha‾1)
and it was statistically similar to 45 kg N ha‾1 (1.82 ha).
The interaction effect due to seed rates and nitrogen levels showed significant
influence on effective tiller per plant, grain and straw yield and harvest index.
The combination of 10 kg seed and 60 kg nitrogen per hectare produced the highest
grain yield (2.15 t ha‾1). |
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S.M. Bokhtiar
,
M.L. Kabir
,
M.J. Alam
,
M. M. Alam
and
M.H. Rahman
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The site-specific nutrient requirement of sugarcane (Saccharum
officinarum) and companion crops, viz. onion (Allium cipa)
and lentil (Lens culinaris) in sugarcane based cropping systems
field experiments was determined under two Agro-ecological zones (AEZ),
namely High Barind Tract (AEZ 26) and Tista Meander Floodplain soils
(AEZ 3). The application of fertilizers for sugarcane and intercrops,
onion and lentil as per soil test basis followed by dhaincha (Sesbania
aculeata) significantly increased cane yield to the extent of 19
% at AEZ 26 and 45 % at AEZ 3 over the sole cane crop. Maximum cane
yield (119 t ha‾1) with highest BCR of Tk.4.37 was
found in High Barind Tract with the application of N190 +
P44 + K65 + S25 + Zn3.5
kg ha‾1 to sugarcane and N55 + P18
+ K25 + S6 kg ha‾1 to potato.
In Tista Meander Floodplain soils, application of N120 +
P40 + K75 + S20 + Zn2 +
Mg15 kg ha‾1 and N15 + P5
+ K6 + S3 kg ha‾1to sugarcane
and lentil, respectively produced the highest yield of 117 t ha‾1
with BCR of Tk.4.25. Green manure Sesbania aculeata increased
cane yields about 2 to 9 per cent and contributed 56 - 66 kg N ha‾1. |
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