The Agriculturists最新文献_第5页

Response of Some Landrace Rice (Oryza sativa L.) Cultivars to Applied Nitrogen in Lowland Ecosystem 部分地方稻(Oryza sativa L.)的响应低地生态系统施氮品种研究

The Agriculturists Pub Date : 2018-07-21 DOI: 10.3329/AGRIC.V16I1.37529

M. Mamun, M. Haque, Q. Khaliq, M. Karim, A. Karim

{"title":"Response of Some Landrace Rice (Oryza sativa L.) Cultivars to Applied Nitrogen in Lowland Ecosystem","authors":"M. Mamun, M. Haque, Q. Khaliq, M. Karim, A. Karim","doi":"10.3329/AGRIC.V16I1.37529","DOIUrl":"https://doi.org/10.3329/AGRIC.V16I1.37529","url":null,"abstract":"An experiment was conducted to determine the effects of nitrogen (N) fertilization on growth and yield of some landrace rice (Oryza sativa L.) cultivars in lowland ecosystem. Three popular landrace rice cultivars: Rajashail, Kutiagni and Sadamota were treated with five times of N application viz. (i) two split applications of prilled urea (PU) at 10 days after transplanting (DAT) and before panicle initiation (PI) stage, (ii) deep placement of urea super granule (DPUSG) at 10 DAT, (iii) DPUSG before PI stage, (iv) PU application before PI stage and (v) control. The results showed that the landrace rice cultivar Kutiagni had the highest number of tillers under PU, while Rajashail gave the highest number of tillers under DPUSG applied before PI stage. Further, Kutiagni produced higher amount of dry matter under two splits of PU, while Rajashail produced higher amount of dry matter under DPUSG applied before PI stage. However, application of PU before PI stage significantly increased leaf area index in all the three landraces. The varieties responded to applied N and produced the highest yield in Kutiagni. The DPUSG at 10 DAT increased straw yield but failed to increase grain yield even over control. The DPUSG before PI stage significantly increased rice yield and economic return. The yield of rice in DPUSG applied before PI stage was comparable to two splits of PU and top dressing of PU before PI stage. Compared to control (2.93 t ha-1), yield increase was 26% in Kutiagni (3.70 t ha-1) under DPUSG before PI stage. These results suggest that Kutiagni was more responsive to added N and this cultivar could be cultivated with DPUSG at PI stage.The Agriculturists 2018; 16(1) 01-12","PeriodicalId":322702,"journal":{"name":"The Agriculturists","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126691935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Evaluation of Rice (Oryza sativa L.) Genotypes for Drought Tolerance at Germination and Early Seedling Stage 水稻(Oryza sativa L.)评价发芽和苗期早期抗旱基因型研究

The Agriculturists Pub Date : 2018-07-21 DOI: 10.3329/AGRIC.V16I1.37533

M M Islam, E. Kayesh, E. Zaman, T. Urmi, M. Haque

{"title":"Evaluation of Rice (Oryza sativa L.) Genotypes for Drought Tolerance at Germination and Early Seedling Stage","authors":"M M Islam, E. Kayesh, E. Zaman, T. Urmi, M. Haque","doi":"10.3329/AGRIC.V16I1.37533","DOIUrl":"https://doi.org/10.3329/AGRIC.V16I1.37533","url":null,"abstract":"Drought stress is a major constraint to the production and yield stability of crops. Rice (Oryza sativa L.) is considered as a drought-sensitive crop species. Within this species, there are considerable varietal differences in sensitivity to this environmental stress. An experiment was conducted at the laboratory of the Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Bangladesh during April to September 2016 to evaluate 100 rice genotypes for drought tolerance during germination and early seedling growth stage. The genotypes were tested against five levels of drought stress imposed by Polyethylene glycol 6000 (PEG-6000) @ 0, 5, 10, 15 and 20%. The experiment was laid out in a complete randomized design with four replications. The results showed that with increasing water stress, germination in all the genotypes decreased from 95.8% in control to 6.6 % in highest stress (20% PEG) level. Seedling height and dry weight also decreased in all rice genotypes with the increase in water stress level. Based on Standard Evaluation System (SES),18 genotypes were selected primarily. Among the 18 genotypes, Ratoil and Chinisakkar showed higher germination index, relative seedling height and relative seedling dry weight than the check drought tolerant BRRI dhan43 at 20% PEG. Beside these, performance of Kumridhan, Pusur and Somondori was also well at this level compared to BRRI dhan43. The genotypes Ratoil, Chinisakkar, Kumridhan, Pusur and Somondori showed the best performance under drought condition. The Agriculturists 2018; 16(1) 44-54","PeriodicalId":322702,"journal":{"name":"The Agriculturists","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126421236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 40

Screening of Rice (Oryza sativa L.) Genotypes at Reproductive Stage for their Tolerance to Salinity 水稻(Oryza sativa L.)的筛选生殖期耐盐基因型研究

The Agriculturists Pub Date : 2018-07-21 DOI: 10.3329/AGRIC.V16I1.37535

Md. Moshiul Islam, M. Faruqe, M. S. Rana, M. Akter, M. Karim

{"title":"Screening of Rice (Oryza sativa L.) Genotypes at Reproductive Stage for their Tolerance to Salinity","authors":"Md. Moshiul Islam, M. Faruqe, M. S. Rana, M. Akter, M. Karim","doi":"10.3329/AGRIC.V16I1.37535","DOIUrl":"https://doi.org/10.3329/AGRIC.V16I1.37535","url":null,"abstract":"Soil salinity is one of the most devastating environmental stresses for rice production in the coastal areas of Bangladesh. Improvement in salt tolerance of rice is an important way for the economic utilization of coastal zones. An experiment was conducted at the vinyl house of the Department of Agronomy, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Bangladesh during December 2016 to April 2017 to determine the effects of different salinity levels on the yield and yield components of some rice (Oryza sativa L.) genotype sand finally, screening of rice genotypes for salt tolerance. The experiment containing four treatments was laid out in a complete randomized design with five replications. The treatments were four levels of saline water with electrical conductivities at control (0.3 dSm-1), 5, 10 and 15dSm-1. Based on screening at germination stage, relatively salt-tolerant eleven genotypes with two check varieties were used in this experiment. The study showed that increase in salinity level significantly decreased yield and yield contributing characters of rice. However, among the eleven, three genotypes (Chapali, Patnai 23 and Soloi) were considered as moderately salt tolerant at 15 dSm-1 on the basis of their yields and yield contributing characteristics such as plant height reduction, total tiller reduction, effective tiller reduction, reduction of fertile grains per panicle, grain yield and relative grain yield. Therefore, Chapali, Patnai 23 and Soloi might be recommended as moderately salt tolerant rice genotypes. The Agriculturists 2018; 16(1) 65-77","PeriodicalId":322702,"journal":{"name":"The Agriculturists","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125609051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Management of Foot and Root Rot Disease of Eggplant (Solanum melongena L.) Caused by Sclerotium rolfsii under In Vivo Condition 茄子足、根腐病的防治体内条件下由罗氏菌核菌引起

The Agriculturists Pub Date : 2018-07-21 DOI: 10.3329/AGRIC.V16I1.37536

M. A. Siddique, A. Ahmmed, N. Jahan, Golam Hasan Mazumder, R. Islam

{"title":"Management of Foot and Root Rot Disease of Eggplant (Solanum melongena L.) Caused by Sclerotium rolfsii under In Vivo Condition","authors":"M. A. Siddique, A. Ahmmed, N. Jahan, Golam Hasan Mazumder, R. Islam","doi":"10.3329/AGRIC.V16I1.37536","DOIUrl":"https://doi.org/10.3329/AGRIC.V16I1.37536","url":null,"abstract":"An experiment was conducted to evaluate the efficacy of fungicides, plant extracts, organic manure and biocontrol-agents against foot and root rot disease of eggplant caused by Sclerotium rolfsii. Five chemical fungicides, two plant extracts, organic amendment - poultry manure and biocontrol-agent Trichoderma harzianum were evaluated against the disease in field condition. Fungicides and plant extracts were sprayed at the base of each plant and adjacent soil at 40, 50 and 60 days after transplanting. Organic manure and biocontrol-agent were applied to the soil before transplanting. The lowest disease incidence (7.10 %) and no disease severity were observed in Bavistin 50 WP at 120 DAT followed by Topgan 50 WP and Ridomil Gold. Higher yield and plant growth like plant hight (88 cm), number of branch/plant (7.33) and number of leaf/branch (25.33) was also supported by Bavistin 50 WP . The highest benefit cost ratio was also calculated in Bavistin 50 WP followed by Topgan 50 WP and Ridomil Gold. Application of biocontrol-agent (T. harzianum) also showed promising effect against foot and root rot disease.The Agriculturists 2018; 16(1) 78-86","PeriodicalId":322702,"journal":{"name":"The Agriculturists","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115381267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

In Vitro Shoot Regeneration of Rice (Oryza sativa L.) Varieties under Artificial Drought Stress 水稻(Oryza sativa L.)离体苗再生研究人工干旱胁迫下的品种

The Agriculturists Pub Date : 2018-07-21 DOI: 10.3329/AGRIC.V16I1.37534

A. Chakraborty, S. Chowdhury, Z. Haque, Asim Kanti Dash, A. Mosnaz

引用次数: 3

Effects of Cutting Length and Position on the Seed Yield and Quality of Tossa Jute (Corchorus olitorius L.) 扦插长度和扦插位置对黄麻种子产量和品质的影响

The Agriculturists Pub Date : 2018-07-21 DOI: 10.3329/AGRIC.V16I1.37530

M. Mollah, Md. Tareq, Z. Rafiq, S. Sarkar, B. Hossen

引用次数: 0

Comparative Advantages of Lentil (Lens culinaris) and Mustard (Brassica nigra L.) Production and their Profitability in a Selected District of Bangladesh 小扁豆(Lens culinaris)与芥菜(Brassica nigra L.)的比较优势孟加拉国某选定地区的生产及其盈利能力

The Agriculturists Pub Date : 2018-07-21 DOI: 10.3329/AGRIC.V16I1.37531

Sabrina Momtaj Tithi, B. K. Barmon

{"title":"Comparative Advantages of Lentil (Lens culinaris) and Mustard (Brassica nigra L.) Production and their Profitability in a Selected District of Bangladesh","authors":"Sabrina Momtaj Tithi, B. K. Barmon","doi":"10.3329/AGRIC.V16I1.37531","DOIUrl":"https://doi.org/10.3329/AGRIC.V16I1.37531","url":null,"abstract":"The present study was conducted to estimate the profitability, domestic resource cost (DRC) and comparative advantages of lentil and mustard production in Bangladesh. Primary data were used in this study, where a total of 100 randomly selected farm survey (Mustard 50 & Lentil 50) was conducted in Meherpur district using structured questionnaire. The study revealed that per hectare total cost and net profit of lentil production were about Tk. 78,442 and Tk. 86,590, respectively, whereas they were Tk. 62,527 and Tk. 38,718 for mustard production. The benefit cost ratios (BCR) of lentil and mustard production were 2.32 and 1.73, respectively, indicating that both lentil and mustard cultivation in Bangladesh are profitable. The domestic resource costs (DRC) of lentil and mustard production were 0.39 and 0.55, respectively which imply that Bangladesh has comparative advantage in producing both lentil and mustard. The Cobb-Douglas production function coefficients show that farm area, irrigation, pesticides, and chemical fertilizers (Gypsum, MP) were statistically significant factors affecting lentil production having increasing returns to scale. Farm area, irrigation and manure were statistically significant factors affecting mustard production with constant return to scale. In this study, production, technology and marketing problems have been listed down which will help the policy makers and the researchers to undertake proper steps for further improvement of lentil and mustard production in Bangladesh. The Agriculturists 2018; 16(1) 21-33","PeriodicalId":322702,"journal":{"name":"The Agriculturists","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123483236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Leaf Characteristics and Yield Performance of Mungbean ( Vigna radiata L.) Varieties under Different Levels of Shading 绿豆(Vigna radiata L.)叶片特性及产量特性不同遮荫水平下的品种

The Agriculturists Pub Date : 2018-01-26 DOI: 10.3329/AGRIC.V15I2.35463

M. A. Hossain, M. Hasan, S. Sikder, A. Chowdhury

{"title":"Leaf Characteristics and Yield Performance of Mungbean ( Vigna radiata L.) Varieties under Different Levels of Shading","authors":"M. A. Hossain, M. Hasan, S. Sikder, A. Chowdhury","doi":"10.3329/AGRIC.V15I2.35463","DOIUrl":"https://doi.org/10.3329/AGRIC.V15I2.35463","url":null,"abstract":"An experiment was carried out to evaluate the leaf characteristics and yield performances of mungbean ( Vigna radiata L.) under different light levels at the Crop Physiology and Ecology Research Field of Hajee Mohammad Danesh Science and Technology University, Dinajpur during March to June 2016. The experiment was laid out in a split plot design with three replications. Three light levels (L 100 - 100 % light intensity, L 75 - 75 % light intensity and L 50 - 50% light intensity) were assigned in the main plots and four varieties (BARl Mung-6, BINA Mung-8, BINA Mung-5 and BU Mug-4) were assigned in subplots. Mosquito nets of different pore size were used for maintaining 75 and 50 percent light intensity. Leaf area was increased due to reduced light levels in all mugbean varieties but the increment was significant in BINA Mung-5 and BINA Mung-8 only at 75% light intensity at 40 days after sowing and only in BARI Mung-6 with L 50 and BU Mug-4 with L 75 and L 50 at 50 days after sowing. Due to reduced light levels, leaf dry weight was affected more in BINA Mung-5 and BU Mug- 4 than BARI Mung-6 and BINA Mung-8. Leaf thickness was reduced under shade in all the mungbean varieties, except in BU Mug-4 at 75% light intensity, and the reduction in leaf thickness was mainly due to the reduction in thickness of spongy layer. The palisade layer thickness was influenced insignificantly but spongy layer thickness was increased in BINA Mung-5 at 100% light intensity. The grain yields (t ha -1 ) of BARI Mung-6 and BINA Mung-8 remained stable under partial shade condition but the grain yield of BINA Mung-5 and BU Mug-4 was reduced drastically under partial shade condition. Higher leaf dry weight, number of pods plant - 1, seeds pod -1 , and heavier grains in BARI Mung-6 and BINA Mung-8 contributed to the higher grain yield plant -1 under partial shade condition than in BINA Mung-5 and BU Mug-4. The Agriculturists 2017; 15(2) 40-51","PeriodicalId":322702,"journal":{"name":"The Agriculturists","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115559484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Technical Efficiency of the Setbag Net Fishery in Bangladesh: An Application of a Stochastic Production Frontier Model 孟加拉渔网技术效率:随机生产前沿模型的应用

The Agriculturists Pub Date : 2018-01-26 DOI: 10.3329/AGRIC.V15I2.35465

G. Rabbani, Akhtaruzzaman Khan, M. S. Islam, R. Lucky

{"title":"Technical Efficiency of the Setbag Net Fishery in Bangladesh: An Application of a Stochastic Production Frontier Model","authors":"G. Rabbani, Akhtaruzzaman Khan, M. S. Islam, R. Lucky","doi":"10.3329/AGRIC.V15I2.35465","DOIUrl":"https://doi.org/10.3329/AGRIC.V15I2.35465","url":null,"abstract":"A study was conducted to examine the technical efficiency for Setbag net fishing boats operated in the year 2014. A total of 100 samples of Setbag net fishing boats were selected, of which 40 were from Cox’s Bazar, 40 were from Chittagong and 20 were from Bagerhat. Stochastic frontier (with technical inefficiency effect) model was specified and estimated. Results have shown that the estimated mean technical efficiency of Setbag net fishing boats is 84 percent. The efficiency of Setbag net fishing boat was positively associated with total cost, while the number of nets were negatively related to fishing day and crew size. Head maji ’s age had significant effect on inefficiency at 5% level. Although, the effect on boats’ efficiency was positive, (though insignificant) for head maji’s experience, head maji’s education, engine horse power and boat age. The use of modern fishing boat and improved fishing technology should be promoted, through proper training and motivation program for fisher. At the same time old and unfit fishing boat and gears should be gradually removed and replaced by new and modern fishing boat. The Agriculturists 2017; 15(2) 59-65","PeriodicalId":322702,"journal":{"name":"The Agriculturists","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129369901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Seed Yield and Quality of Late Season Jute ( Corchorus olitorius L.) Seed as Influenced by Plant Growth Regulators 晚熟黄麻种子产量和品质的研究植物生长调节剂对种子的影响

The Agriculturists Pub Date : 2018-01-26 DOI: 10.3329/AGRIC.V15I2.35474

M. Mollah, M. Rubel, I. Hasan, A. Sultana, Md. Tareq

引用次数: 1