Search Result of "Hossain, A"

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of planting times and plant densities of top-shoot cuttings on multiplication of breeder seed potato)

ผู้เขียน:ImgMd. Abdullah Al Mamun, ImgAbdullah Al-Mahmud, ImgMohammad Zakaria, ImgM. Mofazzal Hossain, ImgMd. Tofazzal Hossain

สื่อสิ่งพิมพ์:pdf

Abstract

Top-shoot cuttings were planted with the whole tuber (as a control) at different dates using three spacings at the Horticultural Research Farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University to evaluate the performance of top-shoots as planting material and to determine the optimum time of planting and the optimum spacing for top-shoot cuttings as planting material for breeder seed production. The survival of top shoot cuttings was more than 97.8% irrespective of the planting time and plant spacing. Significant variations were found among the treatment combinations for plant height at 45 and 60 days after planting (DAP), foliage coverage at 45 and 60 DAP, number of branches per plant, number of tubers per plant, individual tuber weight, tuber yields per plant and per hectare yield. The highest mean yield (46.57 t/ha) was produced by whole tubers planted on 10 November with 50  10 cm spacing which was similar to whole tubers planted on 1 November with 50  10 cm spacing. On the other hand, plants from top-shoot cuttings yielded 34.82 t/ha in T3S2 followed by T1S1 (33.34 t/ha), T3S3 (30.70 t/ha). The total yield of potato increased 122.8% from a single, early crop due to taking two repeated cuttings compared with 89.6% from a single late crop. Early planting of top-shoot cuttings with closer spacing (50  10 cm and 50  15 cm) is recommended for the multiplication of breeder seed potato.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 050, Issue 1, Jan 16 - Feb 16, Page 26 - 31 |  PDF |  Page 

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ผลงานตีพิมพ์ในวารสารวิชาการ

Inactivation strategies for Clostridium perfringens spores and vegetative cells

ผู้แต่ง:ImgPraphat K. Talukdar, ImgDr.Pathima Udompijitkul, Assistant Professor, ImgAshfaque Hossain, ImgMahfuzur R. Sarker,

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา สังคมศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Agriculture and Livelihoods in the Flood-prone Ecosystem in Thailand)

ผู้เขียน:ImgWilailak Sommut, ImgManik Lal Bose, ImgVirendra Pal Singh, ImgMahabub Hossain

สื่อสิ่งพิมพ์:pdf

Abstract

The study aimed to assess recent changes in agriculture and livelihoods of farmers in the flood-prone ecosystem of Thailand. One thousand two hundred and sixty-six households were randomly interviewed by using a structured questionnaire in twenty provinces under the ecosystem during 2000/2001. The findings revealed that Thailand had a favorable endowment of land with an average size of holding of 4.73 ha. The size of holding varied greatly across regions. Tenancy cultivation has been widespread (41% of the land) because of the high incidence of rural-urban migration. Most of the household heads had only primary level education. High diversity of rice varieties was found due to widespread cultivation of local varieties in the rainfed lands. Irrigation infrastructure has expanded greatly in the flood-prone ecosystem contributing to intensification of cropping. But the monocrop of flood-prone rice was still dominant. The double cropping of rice was found to vary from 5 to 28 percent in shallow flooded areas, and from 10 to 30 percent in deepflooded areas depending on the regions. The incidence of double cropping of modern varieties was still low. The average rice yield increased from 2.20 to 2.78 t/ha. The costs of rice cultivation was mainly on account of material inputs particularly, chemical fertilizers and machine rental charge. An average household earned about Baht 128,000, mostly from non-farm activities. Agriculture accounted for only 38 percent of the household income, and rice cultivation only 22 percent. The rural household income was highly unequally distributed. Rice cultivation accounted for a small fraction of income inequality. The level of income and rice's share of household income varied greatly across regions, depending mostly on the size of landholding and the opportunity of non-farm employment. A system approach must be taken in designing research strategy for the flood-prone ecosystem. Development of modern varieties with high yields, shorter maturity period, tolerance to submergence, and improved grain quality could lead to further intensification of rice farming. In addition, wider adoption of two modern varieties within the year, and reduction in the instability in yield from climatic stresses could make significant impact of the livelihoods of the flood-prone rice farmers than the improvement of the traditional deepwater rice plant.

Article Info
Kasetsart Journal of Social Sciences -- formerly Kasetsart Journal (Social Sciences), Volume 025, Issue 1, Jan 04 - Jun 04, Page 69 - 89 |  PDF |  Page 

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Researcher

ดร. ปัทธิมา อุดมไพจิตรกุล, ผู้ช่วยศาสตราจารย์

ที่ทำงาน:ภาควิชาวิทยาศาสตร์และเทคโนโลยีการอาหาร คณะอุตสาหกรรมเกษตร บางเขน

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา สังคมศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Optimal Rotation Interval of Akashmoni (Acacia auriculiformis) Plantations in Bangladesh)

ผู้เขียน:ImgSheikh Sirajul Islam, ImgMohammed Syedul Islam, ImgMd. Abu Taher Hossain, ImgZahirul Alam

สื่อสิ่งพิมพ์:pdf

Abstract

The rotation interval for akashmoni (Acacia auriculiformis) plantations in Bangladesh is discussed for fuel wood and timber under strip plantation, woodlot, and community forest management systems. The rotation interval was calculated on the basis of the market price, the market mechanism, and the costs and returns of akashmoni plantations during 2000–2001. Considering the present management system, the mode of marketing, the market mechanism, and all economic criteria, the rotation interval of akashmoni species may be fixed at 8 years for fuel wood and 13–15 years for timber. The average market price of round wood and fuel wood was US $147.24 per m3 and US $0.72 per md (1 md = 37.3261 kg), respectively. The elimination rate varied from 5 to 90 percent depending on the plantation, the year, and the location, with values of 5 percent in the areas of Dinajpur, Bogra, and Dhaka and more than 50 percent in Tangail and Jessore. If the Net Present Value is considered as the rotation criterion, the rotation interval may be prescribed at age 15 years for timber. If the Internal Rate of Return and the Land Expectation Value are considered, the rotation interval may be fixed at 13 years for timber. Considering available data from plantations aged between 5 and 17 years, the recommended optimum rotation interval for timber and fuel wood was 15 and 8 years, respectively. At 15 years, the plantation was mature for timber use while fuel wood was a priority at 8 years as it was not necessary to use mature plantation wood.

Article Info
Kasetsart Journal of Social Sciences -- formerly Kasetsart Journal (Social Sciences), Volume 034, Issue 1, Jan 13 - Apr 13, Page 181 - 190 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Anthesis and Silking Dynamics of Maize under Contrasting Nitrogen and Water Levels)

ผู้เขียน:ImgMd. Samim Hossain Molla, Imgดร.สุตเขตต์ นาคะเสถียร, รองศาสตราจารย์, Imgดร.เอ็จ สโรบล, รองศาสตราจารย์, Imgดร.วิจารณ์ วิชชุกิจ, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

Anthesis-silking and kernel setting may vary with the plant growth rate and environment. Two field experiments were conducted in December 2010 and January 2012 focusing on the short pre-anthesis and the prolonged bracketing-flowering stage drought (PBD), respectively, at the National Corn and Sorghum Research Center, Thailand. A split plot design with factorial randomized complete blocks was established with three replications, where two water regimes (well-watered and water-stressed) formed the main plots and two maize hybrids (Pioneer 30B80 and Suwan 4452) and three nitrogen levels (0, 160 (optimal) and 320 (supra-optimal) kg.ha-1 of N) collectively formed subplots. Under all conditions, relatively more biomass partitioning to the roots during the early vegetative stage might have lowered aerial growth and subsequently caused a slight delay in anthesis and silking in Pioneer 30B80. Albeit the plant and silk growth rates during the bracketing-flowering stage were higher in Pioneer 30B80 (even under combined stresses, which shortened the anthesis-silking period and interval (ASI) that caused more kernel setting than Suwan 4452), Pioneer 30B80 failed to complete 100% silking under PBD. Silking was more affected than anthesis by both stresses especially under PBD. Across the varieties, optimal nitrogen and water accelerated plant and silk growth, which also subsequently influenced timely flowering and shortened the ASI followed by more kernel setting.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 048, Issue 6, Nov 14 - Dec 14, Page 837 - 850 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Growth and Physiological Responses to Supra-Optimal Nitrogen and Pre-Anthesis Drought Stress in Maize)

ผู้เขียน:ImgMd. Samim Hossain Molla, Imgดร.สุตเขตต์ นาคะเสถียร, รองศาสตราจารย์, Imgดร.เอ็จ สโรบล, รองศาสตราจารย์, Imgดร.วิจารณ์ วิชชุกิจ, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

Water and nitrogen (N) are major limiting factors in the production of maize (Zea mays L.) in the tropics and subtropics. A field experiment was conducted during the dry season in 2010–11 at the National Corn and Sorghum Research Center, Thailand to determine the sole and interactive effects of N, water and variety on the growth, physiology and grain yield of maize. Two water regimes (wellwatered and water-stressed) formed the main plots and two hybrids (Pioneer 30B80 and Suwan 4452) and three N levels (0 kg.ha-1, 160 kg.ha-1 (optimal) and 320 kg.ha-1 (supra-optimal) were subplots with three replications using a split plot design and a factorial randomized complete block arrangement. Zero and supra-optimal N, and water-stress significantly reduced the green leaf area (37.86, 6.76 and 17.64%, respectively, at silking), root dry matter (RDM) (62.48, 15.66 and 48.83%, respectively), grain number (20.43, 11.96 and 16.76%, respectively) and grain yield (GY) (31.64, 14.07 and 19.20%, respectively) but not leaf rolling when compared to the control. The leaf relative water content (RWC) decreased (12.87%) significantly only with water-stress. The two hybrids responded differently to N with regard to leaf area—Suwan 4452 was more sensitive to zero N and Pioneer 30B80 was more sensitive to supraoptimal N. Suwan 4452 was lower in RDM (53.92%), grain number (12.90%), and GY (9.66%) than Pioneer 30B80, with the latter performing better under single or combined stress. Higher RDM levels in the surface soil during vegetative growth, the amount of kept green leaves and more grain and a higher RWC were exhibited as drought and N stress tolerance indicators.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 048, Issue 5, Sep 14 - Oct 14, Page 676 - 688 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effects of Water Stress on Plant Canopy, Yield Attributes and Yield of Potato)

ผู้เขียน:ImgAbdullah-Al-Mahmud, ImgM. Mofazzal Hossain, ImgMohammad Zakaria, ImgM.A. Khaleque Mian, ImgM. Abdul Karim

สื่อสิ่งพิมพ์:pdf

Abstract

Four potato clones of the International Potato Center with one check variety (Asterix) were planted in the third week of November 2010 at the Horticultural Research Farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University to observe the effect of water stress on plant canopy growth, development and yield of potato. Plant heights, the number of leaves and leaf area of all the clones were significantly affected by water stress. Tolerant clones produced greater tuber dry matter under stressed conditions. The largest reduction in yield (greater than 50%) was found in the susceptible clones; the tolerant clones showed comparatively less yield reduction (less than 50%). The yield reduction caused by water stress was attributed mainly to the reduction in number of tubers per plant with small-sized tuber production. In addition, the percentage difference in dry matter in the tubers of susceptible clones was greater than in the tolerant clones due to the utilization of water from the tubers in the water stress treatment.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 049, Issue 4, Jul 15 - Aug 15, Page 491 - 505 |  PDF |  Page 

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Researcher

นาย ศิวเรศ อารีกิจ, ผู้ช่วยศาสตราจารย์

ที่ทำงาน:ภาควิชาพืชไร่นา คณะเกษตร กำแพงแสน

สาขาที่สนใจ:DNA technology, Plant genetic and epigenetic, Plant biotechnology, Plant molecular breeding

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ดร. ธรรมศักดิ์ ทองเกตุ, รองศาสตราจารย์

ที่ทำงาน:ภาควิชาพืชสวน คณะเกษตร กำแพงแสน

สาขาที่สนใจ:การผลิตผัก, การปลูกพืชโดยไม่ใช้ดิน, เทคโนโลยีเมล็ดพันธฺุ์, การปลูกพืชในสภาพแวดล้อมควบคุม

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ดร. วชิรญา อิ่มสบาย, ผู้ช่วยศาสตราจารย์

ที่ทำงาน:ภาควิชาพืชสวน คณะเกษตร กำแพงแสน

สาขาที่สนใจ:วิทยาการหลังการเก็บเกี่ยว, สรีรวิทยาและเทคโนโลยีหลังการเก็บเกี่ยวผลไม้ ดอกไม้และผัก , สรีรวิทยาไม้ผลเขตร้อน

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ดร. สิริพล อนันตวรสกุล, รองศาสตราจารย์

ที่ทำงาน:ภาควิชาวิศวกรรมเคมี คณะวิศวกรรมศาสตร์ บางเขน

สาขาที่สนใจ:Polymer Science and Engineering, Modeling and Simulation, Transport Phenomena

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ดร. สุตเขตต์ นาคะเสถียร, รองศาสตราจารย์

ที่ทำงาน:ภาควิชาพืชไร่นา คณะเกษตร บางเขน

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