Volume 4 Issue 1

CONTENT LIST

  1. A study on organic matter and nitrogen dynamics in wetland paddy soils of Bangladesh
  2. Influence of N and P fertilizer rates on yield and yield components of bread wheat (Triticum aestivum L.) in Sekota District of Wag-Himira Zone, North Eastern Ethiopia
  3. Performance of tropical sugar beet (Beta vulgaris L.) as influenced by date of harvesting
  4. Evaluation of bloom dynamics and seasonal abundance of cyanobacteria in eutrophic fish culture ponds at three different regions of Bangladesh
  5. Optimization of nitrogen requirement for better growth and yield of brinjal (Solanum melongena L.)
  6. Identification of pathogenic Escherichia coli strain from river and sewage water in Bangladesh
  7. Determination of intra and inter row spacing on the yield of pearl millet (Pennisetum glaucum L.) in the dry land areas of Wag Himra, eastern Amhara, Ethiopia
  8. A comparative study on morphology, mineral and vitamin compositions of two variants of Hibiscus sabdariffa (L.)
  9. Economics of potato (Solanum tuberosum L.) production in terai region of Nepal
  10. Investigating the vertical garden applications in Konya City, Turkey: A case study
  11. Determination of seeding rate and inter row spacing on the yield of tef (Eragrostis tef Zucc. Trotter) in the dryland areas of Wag Lasta, North Eastern Amhara, Ethiopia
  12. Application of coconut shell charcoal and NPK fertilizer toward Acacia mangium growth on the soil of ex-limestone mining in Bogor, Indonesia
  13. A review on production status and growing environments of rice in Nepal and in the world
  14. Screening of wheat (Triticum aestivum L.) lines against salinity under field condition
  15. Current status of bacterial contamination in some fish species of Bakkhali river Estuary, Bangladesh
  16. Determination of irrigation regime for hot pepper (Capsicum annum L.) in dry-land areas of Wag- Himra, North Eastern Amhara, Ethiopia
  17. Key to Indian species of genus Brachygrammatella Girault (Hymenoptera: Trichogrammatidae) with re-description of B. indica and some new distributional records
  18. Interaction of nitrogen doses and establishment methods in lowland rice at Parwanipur, Bara, Nepal

A study on organic matter and nitrogen dynamics in wetland paddy soils of Bangladesh

Md. Ashraful Alam, Md. Mizanur Rahman, Mohammed Ziauddin Kamal*, Humayun Kabir Shiragi, Most. Shirazum Monira and Momtahina Hasnat
Faculty of Graduate Studies, Department of Soil Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, BANGLADESH
*Corresponding author’s E-mail: [email protected]
Received: 30 January 2019; Revised received: 20 February 2019; Accepted: 22 February 2019

ABSTRACT
The present study was aimed to evaluate the effects of different sources organic matter along with various level nitrogen fertilizations on nutrient dynamics and physicochemical variation of soil at different incubation periods in the research field of department of soil science, BSMRAU. RS, VC, RHB, CD and PM were used @ 2 t C ha-1 along with N rates 0, 100 and 150 kg ha-1 in a factorial randomized complete block design. Combined application of VC and RHB with N100 dose significantly reduces soil bulk density. PM-treated plot resulted the highest amount of TN at 90 DAT, while RHB treated plot at 45 DAT. N fertilized plot showed maxi-mum TN content at 75 DAT with N150 treatment. Significant interaction effects of OM and N on TN content of soil were exhibited at the incubation period 15, 30 and 45 DAT. Different organic amendment showed a dissimilar nutrient release pattern. Significantly higher phosphorus content was detected in VC treated soil while the S content was in the CD-treated soil. The RHB treated plots provide a significantly higher exchangeable K content in post-harvest soil. The available P, S and exchangeable K contents in post-harvest soil increased positively in all treatments as compared to initial soils. Organic manures and N fertilization had no significant effect on different chemical properties like soil pH, TN, available S and exchangeable K. Significant P enrichment was occurred in organic and N treated soil. Thus, organic and inorganic fertilization had a significant positive influence on the enrichment of physiochemical properties of wetland paddy soil.

Keywords: Mineralization, Nutrient dynamics, Organic amendment, Rice, Wetland

Influence of N and P fertilizer rates on yield and yield components of bread wheat (Triticum aestivum L.) in Sekota District of Wag-Himira Zone, North Eastern Ethiopia

Alemu Lakew
Amhara Regional Agricultural Research Institute (ARARI), Sekota Dry Land Agricultural Research Center, P.O. Box, 62, Sekota, ETHIOPIA
E-mail: [email protected]
Received: 11 December 2018; Revised received: 17 February 2019; Accepted: 22 February 2019

ABSTRACT
A field experiment was conducted to study the performance of bread wheat sown under different nitrogen and phosphorous fertilizer rates during 2017 main cropping season on farmer’s field at Weleh and Sayda, North eastern Ethiopia. Factorial combinations of four nitrogen (10.25, 20.5, 41 and 60.5 kg ha-1) and four phosphorous (23, 46, 69, and 92 kg ha-1) rates were laid out in randomized complete block design (RCBD) with three replications. The result showed that using a different N and P rate of fertilizer had no significant effect (P≥0. 05) on the number of total and effective tillers in both locations. Similarly, at Sayda, different rate of nitrogen and phosphorus fertilizers did not show a significant effect on biomass yield, Straw yield, and grain yield. On the other hand, plant height was significantly affected by the interactions of nitrogen and phosphorus fertilizers. While days to 50% heading, days to 90% maturity, number of kernels per spike and thousand kernel weight were significantly affected by different rate of nitrogen fertilizer. Besides that, spike length and number of kernels per spike were significantly affected by phosphorus fertilizer application. Since the homogeneity of error variance was significant, it indicates that both locations were not combined together, rather it was done separately. According to the partial budget analysis, the combination of 20.5N and 23P kg ha-1 was economically feasible at both locations. For future conducting of the researches in different seasons and location is important for sound recommendation.

Keywords: Dry land, Nitrogen and phosphorus (NP), Partial budget analysis, Wheat variety, Yield component

Performance of tropical sugar beet (Beta vulgaris L.) as influenced by date of harvesting

Swapan Kumar Paul1*, Rifat Alam Joni1, Md. Abdur Rahman Sarkar1, Md. Sohrab Hossain2 and Shabuj Chandra Paul1
1Department of Agronomy, Bangladesh Agricultural University, Mymensingh 2202, BANGLADESH
2Bangladesh Sugarcrop Research Institute, Ishurdi, Pabna, BANGLADESH
*Corresponding author’s E-mail: [email protected]
Received: 20 February 2019; Revised received: 24 February 2019; Accepted: 02 March 2019

ABSTRACT
An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during November 2017 to April 2018 to study the effect of date of harvesting on the yield and quality of tropical sugar beet. The experiment comprised seven varieties viz. SV 889, SV 892, SV 893, SV 894, SZ 35, KWS Serenada and KWS Danicia and two dates of harvesting viz. 135 days after sowing (DAS) and 155 DAS. The experiment was laid out in a randomized complete block design with three replications. Variety, date of harvesting and their interaction showed significant effect on crop characters, beet yield and juice quality of tropical sugar beet. The highest beet length (23.50 cm), individual beet weight (591.6 g) and beet yield (59.16 t ha-1) were recorded in SV 894 while the highest brix (15.42%) was observed in SV 893. The lowest beet yield (40.25 t ha-1) and brix (13.92%) were observed in KWS Danicia. In case of date of harvesting, the highest beet length (24.26 cm), beet girth (25.40 cm), individual beet weight (536.07 g) and beet yield (53.60 t ha-1) were observed at 155 DAS harvest while the highest brix (14.66%) was recorded at 135 DAS harvest. In interaction, the highest beet length (25.67 cm), individual beet weight (681.2 g) and beet yield (68.12 t ha-1) were recorded in SV 894 with 155 DAS harvest whereas the lowest beet yield (32.03 t ha-1) was recorded in the interaction in KWS Danicia with 135 DAS harvest. From this study, it may be concluded that SV 894 appears as the promising variety that can be harvested at 155 DAS.

Keywords: Date of harvesting, Juice quality, Tropical sugar beet, Yield

Evaluation of bloom dynamics and seasonal abundance of cyanobacteria in eutrophic fish culture ponds at three different regions of Bangladesh

Md. Ayenuddin Haque, Md. Abu Sayed Jewel*, Priyangka Das, Mst. Samsad Khatun, Jakia Hasan and Sharmin Jahan
Department of Fisheries, University of Rajshahi, Rajshahi, BANGLADESH
*Corresponding author’s E-mail: [email protected]
Received: 30 January 2019; Revised received: 26 February 2019; Accepted: 01 March 2019

ABSTRACT
Seasonal cycle and bloom dynamics of cyanobacteria in relation to environmental parameters were studied in three areas- Godagari Upazila under Rajshahi district (GD ponds), Bogra city (BG ponds) and Singra upazila under Natore district (SG ponds) from September 2014 to August 2015. Standard methods were followed to analyze the water quality, sediment parameters and cyanobacterial cell density. Except temperature, mean values of all water quality parameters were found significantly different (P < 0.05) among the three study sites. 7 genera of cyanobacteria were identified whereas the highest density was recorded during September in all the studied ponds in order of BG ponds (130.36×106 cells/l) > SG ponds (84.93×106 cells/l) > GD ponds (58.74×106 cells/l). Gradual decrease in cell density was observed from November to January, whereas the lowest density (12.25×106 cells/l) was recorded at BG ponds in December, 2014. Higher values of soil organic matter, total nitrogen and pH were found to play significant role in determining higher cyanobacterial cell density at BG ponds compared to SG and GB ponds. The dominant species recorded in all the three studied regions was Microcystis sp.

Keywords: Bloom dynamics, Culture ponds, Cyanobacteria, Eutrophic fish culture, Seasonal abundance

Optimization of nitrogen requirement for better growth and yield of brinjal (Solanum melongena L.)

Shaila Sharmin* and Lutfor Rahman
College of Agricultural Sciences, International University of Business Agriculture and Technology, Uttara Model Town, Dhaka-1230, BANGLADESH
*Corresponding author’s E-mail: [email protected]
Received: 03 February 2019; Revised received: 27 February 2019; Accepted: 02 March 2019

ABSTRACT
A field experiment was conducted at the College of Agriculture Sciences, Agriculture Research Field of International University of Business Agriculture and Technology (IUBAT), Uttara, Dhaka, to optimize nitrogen requirements for growth and yield response of brinjal (S. melongena). There were six treatments of urea viz., 0, 275, 300, 325, 350 and 375 kg ha-1 and the experiment was laid out in randomized complete block design (RCBD) with four replications. The texture of the experimental soil was sandy loam and fertility status was very low. Parameters measured include: plant height, number of leaves plant-1, leaf area, number of branches plant-1, number of flower clustersplant-1, number of flowersplant-1, fruit diameter, fruits length, number of fruitsplant-1, fruit weight and yield. Present study results revealed that application of the highest dose of urea showed positive significant influence on growth and reproductive characters of brinjal (S. melongena). Similarly, yield and yield contributing characters of brinjal (S. melongena) increased with the increasing rates of urea. The highest yield (18.0 ton ha-1) was obtained from the application of 375 kg ha-1 urea, while the lowest yield (10.1 ton ha-1) was found from the control treatment. Thus, the overall study results suggested that 375 kg ha-1 urea performed the best in context Agriculture Research Field soils of IUBAT, Uttara, Dhaka. The study concluded that before final recommendation of the application dose, further study is needed in different agro-ecological zones of Bangladesh

Keywords: Brinjal (S. melongena), Growth and yield, Optimization, Nitrogenous fertilizer

Identification of pathogenic Escherichia coli strain from river and sewage water in Bangladesh

Minhaz Uddin1, Muhammad Tofazzal Hossain2, Ram Proshad3*, Tapos Kormoker4, Krishno Chandra5 and Tahmina Akter Rimi6
1Department of Environmental Science, Bangladesh Agricultural University, Mymensingh-2202, BANGLADESH
2Department of Microbiology & Hygiene, Bangladesh Agricultural University, Mymensingh-2202, BANGLADESH
3Department of Soil Science, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, BANGLADESH
4Department of Emergency Management, Patuakhali Science and Technology University, Dumki, Patuakhali-8602, BANGLADESH
5Faculty of Agricultural Engineering and Technology, Sylhet Agricultural University, Sylhet-3100, BANGLADESH
6Department of Economics, Nasirabad College, Mymensingh-2200, BANGLADESH
*Corresponding author’s E-mail: [email protected]
Received: 21 February 2019; Accepted: 02 March 2019

ABSTRACT
The study was conducted to isolate and identify the presence of Shiga toxin producing Escherichia coli (STEC) strains in water samples of the Old Brahmaputra River and Sewage water at Mymensingh Municipality. A total of 20 water samples were collected for this experiment. Samples were cultured on EMB agar, stained and PCR was done to detect the pathogenic E. coli. The Old Brahmaputra River is used as a sink of all types of municipal sewage, agricultural wastes, domestic wastes and religious ritual wastes through unplanned sewerage to the river water body. Low quality sanitation system and open defecation are also considerable problems to deteriorate river water quality. Due to accumulation of municipal untreated wastes to river body, it is possible to contain various pathogens. After investigation and identification, fourteen isolates of E. coli was found to contain stx-1 gene with none of stx-2 gene among twenty isolates which indicate pathogenic STEC. There may present major health risk to human and animal due to STEC. Several human diseases like mild diarrhea, bloody diarrhea or even severe hemolytic-uremic syndrome (HUS) may occur for drinking of untreated river water. Domestic ruminants can act as a reservoir for STEC and play a significant role in the epidemiology of human infections.

Keywords: Escherichia coli, Old Brahmaputra River, PCR, STEC, Water quality

Determination of intra and inter row spacing on the yield of pearl millet (Pennisetum glaucum L.) in the dry land areas of Wag Himra, eastern Amhara, Ethiopia

Alemu Lakew and Tafere Berhanu*
Amhara Regional Agricultural Research Institute (ARARI), Sekota Dry land Agricultural Research Center, P.O. Box, 62, Sekota, ETHIOPIA
*Corresponding author’s E-mail: [email protected]
Received: 12 December 2018; Revised received: 10 February 2019; Accepted: 19 February 2019

ABSTRACT
Recently in Ethiopia pearl millet has drawn a lot of attention as a replacement for maize and sorghum in the dry land areas because of its ability to reliably produce grains on a wide range of soils and harsh production environment. A field experiment was conducted during the 2014 cropping season on the Research sites of Abergele and Aybra, at Sekota dryland agricultural research Centre, eastern Amhara, Ethiopia, with the objective of to increase the productivity of pearl millet in the study areas of Wag-Himra Zone through optimizing its intra and inter-row spacing. The treatments considered in the study were consisting of four intra row spacing’s (5, 10, 15 and 20 cm) and four inter-row spacing (30, 50, 60 and 75 cm) and making a total of sixteen treatments. The Randomized Complete Block Design factorial arrangement with three replications a plot size of 5m × 3m was used. Based on the Combined analysis main effects of inter and intra row spacing by location showed significance difference (p<0.05) for the parameters of grain yield. The heights grain yield was recorded from 50cm and 5cm inter and intra row spacing respectively, whereas the lowest grain yield was recorded from 60 cm and 75 cm with 20 cm inter and intra row spacing respectively. It is possible to recommend that, sowing of pearl millet with inter row spacing of 50cm and 5cm intra row spacing is effective in attaining higher grain yield in the study area.

Keywords: Inter row spacing, Intra row spacing, Pearl millet

A comparative study on morphology, mineral and vitamin compositions of two variants of Hibiscus sabdariffa (L.)

C.V. Ilodibia1*, U.A. Achebe2, C.U. Arubalueze2 and E. Ibeh1
1Department of Botany, Nnamdi Azikiwe University, P.M.B 5025, Awka, Anambra State, NIGERIA
2Department of Agricultural Education, Nwafor Orizu College of Education Nsugbe, Anambra State, NIGERIA
*Corresponding author’s E-mail: [email protected]
Received: 07 February 2019; Revised received: 11 February 2019; Accepted: 25 February 2019

ABSTRACT
Morphological, mineral and vitamin compositions of leaves and seeds of two varieties of Hibiscus sabdariffa L. were evaluated using standard techniques and compared. Analysis of variance was employed in data analyses. Morphological study showed no significant difference in their habit, structure and phyllotaxy but varied mostly in sizes and colour. The red variety had a greater leaf area (94.25±0.310cm2) and petiole length (6.50±0.620cm) than the green variety, whose leaf area and petiole length are 53.95±0.400cm2 and 3.60±0.332cm respectively. The minerals and vitamins were found to be present in all the parts of the two varieties investigated but in varying levels. Higher composition of the minerals and vitamins were found in the leaves than the seed. However, the nutrients were higher in the red variety. The results of the study revealed that these parts of the two varieties investigated are nutritious and can contribute significantly to the human health requirements thus could be extracted for the manufacture of food and drugs supplements. Overall data could be used as a viable tool in Roselle breeding for improvement in Roselle production and also to enhance proper taxonomic characterization and identification of the plant species which have immense economic potentials as ornamental plants.

Keywords: Comparative, Food and drug supplements, Hibiscus sabdariffa, Mineral, Morphological, Vitamins

Economics of potato (Solanum tuberosum L.) production in terai region of Nepal

Sanjiv Subedi1*, Yuga Nath Ghimire1, Sudip Gautam1, Hema Kumari Poudel1 and Jiban Shrestha2
1Socioeconomics and Agricultural Research Policy Division, Nepal Agricultural Research Council, Khumaltar, Lalitpur, NEPAL
2Nepal Agricultural Research Council, Agriculture Botany Division, Khumaltar, Lalitpur, NEPAL
*Corresponding author’s E-mail: [email protected]
Received: 06 February 2019; Revised received: 15 February 2019; Accepted: 17 February 2019

ABSTRACT
Potato is an important cash crop of Nepal. Research was conducted from January to May, 2018 in Jhapa, Bara and Kailali districts for economic assessment of potato production in terai region of Nepal. Pre-tested interview schedule was used to collect the primary information; moreover, one Focal Group Discussion and two Key Informant Interviews were performed. Furthermore, relevant literatures were reviewed for secondary information. The simple random method of sampling was used within the clusters that were identified in consultation with District Agriculture Development Office, Potato Superzone Office and agricultural officials of the local government. Altogether, 165 samples, 55 samples from each of the three districts were taken for the purpose of the study. The Statistical Packages for Social Sciences (SPSS) and Microsoft excel software were used for data analysis. The majority of the respond-ents (52.7%) prioritized the source-Own home production/ Neighbors/ Friends as the first major source for seed followed by Cooperatives/ Farmer’s group (20%). More than one third of the farmers (35.2%) sold their produce at Home/Local market/Haatbazar followed by Wholesalers/ Distant market (34.5%). The average gross margin per Kattha from potato production was found NRs. 6604.4 and benefit cost ratio was 2.13. The indexing identified- lack of availability of improved quality seed (I= 0.79) as the most important problem followed by incidence of disease and insect/pest (I= 0.71) for potato production. The provision of technical knowledge to control diseases as well as proper allocation of improved quality seed would help to increase profitability and productivity of potato.

Keywords: Benefit cost ratio, Descriptive statistics, Indexing, Potato production

Investigating the vertical garden applications in Konya City, Turkey: A case study

Safa Aydin Qasim QASİM and Sertaç GÜNGÖR*
Selcuk University Faculty of Agriculture Department of Landscape Architecture Konya, TURKEY
*Corresponding author’s E-mail: [email protected]
Received: 18 January 2019; Revised received: 13 February 2019; Accepted: 18 February 2019

ABSTRACT
Vertical garden applications have made serious contributions to the environment not only in terms of aesthetics but also in terms of functionality. In this study, vertical garden samples found in Konya city were examined by being photographed in their places. In order to examine the satisfaction of users, the questionnaire which includes questions under the determined headings (socio-economic structure, field uses, and plant elements, plant species) was applied on a voluntary basis. By calculating the universe size according to the population, a questionnaire composed of 28 questions was applied to 400 people randomly selected from people living in the city of Konya. Frequency distribution analysis of the obtained results was performed using SPSS 20 software. According to the results of the study, vertical gardens are perceived as an aesthetic element in Konya city. People accept that vertical gardens are high-cost applications. When the applications abroad are considered, it can be stated that the applications in Konya city are in the beginning phase.

Keywords: Green façade, Konya/TURKEY, Landscape, Questionnaire, Vertical garden

Determination of seeding rate and inter row spacing on the yield of tef (Eragrostis tef Zucc. Trotter) in the dryland areas of Wag Lasta, North Eastern Amhara, Ethiopia

Alemu Lakew * and Tafere Berhanu
Amhara Regional Agricultural Research Institute (ARARI), Sekota Dry Land Agricultural Research Center, P.O. Box, 62, Sekota, ETHIOPIA
*Corresponding author’s E-mail: [email protected]
Received: 11 December 2018; Revised received: 10 February 2019; Accepted: 20 February 2019

ABSTRACT
Tef production and productivity in Wag lasta is very low as compared to the national average due to many production constraints, including use of inappropriate agronomic practices and low yielder varieties. Therefore, an experiment was conducted to optimize seeding rate and inter-row spacing of tef in the study areas of Wag-Lasta in 2013 and 2014 cropping season. Five seeding rates (5, 10, 15, 20 and 25 kg ha-1) and three inter row spacing’s (15, 20, 25 cm) were laid out in a factorial RCBD with three replications. An additional plot of broad cast of tef seed with 25 kg/ha as a satellite control was included and making a total of 16 treatments. Grain yield showed significance difference at Woleh 2014 on both seeding rate and inter row spacing and combined analysis by location for the year 2014 cropping season for the factor seeding rate. At Lalibela, grain yield and other agronomic traits did not show a significance difference except days to heading, in case of inter row spacing in 2013 and number of tillers in case of seeding rate in 2014 cropping seasons. Based on the combined analysis result the highest grain yield was recorded from 15 kg/ha seeding rate with 20 cm inter row spacing. Generally sowing of tef with the rate of 15 kg ha-1 and 20cm inter row spacing is effective in attaining higher grain yield and economic benefit.

Keywords: Dryland areas, Eragrostis tef, Ethiopia, Inter row spacing, Seeding rate

Application of coconut shell charcoal and NPK fertilizer toward Acacia mangium growth on the soil of ex-limestone mining in Bogor, Indonesia

Basuki Wasis*, Siti Hanna Ghaida and Bayu Winata
Department of Silviculture, Faculty of Forestry, Bogor Agricultural University. Jl. Lingkar Kampus, Kampus IPB Darmaga, Bogor 16680, West Java, INDONESIA
*Corresponding author’s E-mail: [email protected]
Received: 12 February 2019; Revised received: 27 February 2019; Accepted: 02 March 2019

ABSTRACT
Limestone mining is an activity that can cause damage and negative impact on the environment. Revegetation is needed to be done so that the damaged land condition can be returned in accordance with its designation. Acacia mangium is one of the species that can be used in revegetation of mining area. This study aims to increase the A. mangium growth response at the limestone mining land that can be used as a tool for consideration in revegetation activities. The design used in this experiment was a complete randomized design (CRD) factorial with 2 factors. The first factor was the application of coconut shell charcoal and the second factor was the application of NPK fertilizer. The results showed that the addition of coconut shell charcoal could give effect to the number of nodules with the best dose of 90 g and NPK fertilizer was able to give effect to the growth of diameter and the number of root nodules with the best dose of 15 g.

Keywords: Acacia mangium, Coconut shell charcoal, Lime mining, NPK fertilizer, Revegetation

A review on production status and growing environments of rice in Nepal and in the world

Nirmal Gadal1*, Jiban Shrestha2, Mina Nath Poudel3 and Bhanu Pokharel4
1Food Security and Agriculture Business Promotion Division, Ministry of Land Management, Agriculture and Cooperatives, Provice-3, NEPAL
2Nepal Agricultural Research Council, Agriculture Botany Division, Khumaltar, Lalitpur, NEPAL
3National Agriculture Genetic Resource Centre, NARC, Khumaltar, NEPAL
4Regional Agricultural Research Station, NARC, Doti, NEPAL
*Corresponding author’s E-mail: [email protected]
Received: 19 January 2019; Revised received: 02 February 2019; Accepted: 14 February 2019

ABSTRACT
Rice is a major food crop for the people of the world. The role of rice is inevitable in the current and future global food security. It is the number one staple food crop in Nepal and contributes significantly to livelihood of majority of people and to the national economy. This article reviews global rice production scenarios; figures out global Mega Rice Environments (MREs) and based on these analyses, the authors developed Nepal’s Rice Production Environments (RPEs). The Asian countries dominate the global rice production. India has the largest area of rice cultivation. China is the world’s largest producer of rice. Rice productivity is highest in Japan. Rice is cultivated in diverse agro-ecosystems. Rice environments are classified mainly based on land types (upland vs. lowland) and water regimes (irrigated and rainfed). The MREs of the world are classified into seven categories (Four irrigated, two rainfed and one for deep water rice). A total of nine RPEs were identified for Nepal- six under irrigated and three under rainfed conditions. The findings of this study are useful for rice researchers, producers and policy makers.

Keywords: Environments, Food security, Nepal, Production, Rice

Screening of wheat (Triticum aestivum L.) lines against salinity under field condition

S. Banik1, S. Biswas2, F.H. Bipasha3, F. Haque4, M. Morshed5*, M.S. Rahman6 and S.K. Singh7
1Department of Genetics & Plant Breeding, Patuakhali Science and Technology University, Patuakhali, BANGLADESH
2Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur–1706, BANGLADESH
3Bangladesh Agricultural University, Mymensingh-2202, BANGLADESH
4,5Department of Soil Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur–1706, BANGLADESH
6Scientific Officer, Regional Agricultural Research Station, Agricultural Research Institute (BARI), Moulovibazar, BANGLADESH
7Department of Biochemistry, Sher-e-Bangla Agricultural University, Dhaka, BANGLADESH
*Corresponding author’s E-mail: [email protected]
Received: 07 February 2019; Revised received: 26 February 2019; Accepted: 03 March 2019

ABSTRACT
An experiment was undertaken in order to screening wheat genotypes against salinity under field condition with 14 wheat genotypes including 6 check varieties. The genotypes were tested in saline soil where the salinity of the experimental field ranges from 1.5 to 10.3 dS/m during the cropping period. Analysis of variance revealed significant variation among the genotypes for all characters. Phenotypic and Genotypic co-efficient of variation was low for almost all the characters. Phenotypic co-efficient of variation ranged from 8.42 to 23.45 for plant height and yield respectively, while the highest genotypic coefficient of variation (18.90) was observed in yield and lowest (6.83) was found in seed per spike. All of the trait exhibited moderate to high heritability in broad sense (h2b) coupled with a wide range of genetic advance and genetic advance in percentage of mean. Heritability ranged from 37.64`to 91.14 for seed per spike and thousand seed weight respectively. Yield had significant positive correlation with spike length, spikelet per spike, seed per spike, thousand seed weight. On the other hand, yield was found to show a positive relationship with tiller per plant. Tiller per Plant, spikelet per spike, 1000 seed weight were responsible for reduction of yield per plant indirectly. Yield ranged from 1.14 ton/ha to 2.1 ton/ha. The present research work clearly demonstrated that based on field performance considering yield, the genotypes BARI Gom 25 and BARI Gom 26 is best and other some genotypes BAW 1182, BAW 1177 respectively showed their most effective performance on saline soil.

Keywords: Phenotypic and Genotypic co-efficient, Salinity, Wheat (Triticum aestivum L.), Wheat lines

Current status of bacterial contamination in some fish species of Bakkhali river Estuary, Bangladesh

Sharmin Jahan1, Md. Abu Sayed Jewel1*, Md. Ayenuddin Haque1, Jakia Hasan2, Most. Momtahena Mita1, Ambia Aktar1 and Md. Al-Amin1
1Department of Fisheries, Faculty of Agriculture, University of Rajshahi, BANGLADESH
2Bangladesh Fisheries Research Institute (BFRI), Marine Fisheries & Technology Station, Cox’s Bazar, BANGLADESH
*Corresponding author’s E-mail: [email protected]
Received: 30 January 2019; Revised received: 26 February 2019; Accepted: 02 March 2019

ABSTRACT
The present study aims to investigate the isolation of human pathogenic bacteria (Escherichia coli, Salmonella spp. Shigella spp. and Vibrio spp.) and in gills, intestines, skin of fishes of Bakkhali River Estuary, Cox’s Bazar. A total of 50 fish species (25 of Pomadasys hasta and 25 of Glossogobius giuris) were collected from two sampling stations namely Station-1 (Rumalia Chara) and Station-2 (Kusturi Ghat). Bacterial analyses were made by standard methods. Total heterotrophic bacterial load of the isolates was found to be lower than the recommended public health and standard. However, the highest pathogenic bacterial (E. coli, Salmonella spp. Shigella spp. and Vibrio spp.) count at Station-2 might be due to the contamination of municipal and domestic wastes and discharges from small industries that constitute the main pollution source of this estuarine river. Skin was found to be the most preferred organs for higher bacterial load compared to intestine and lower count was recorded in gills. Further research on the microbial quality assessment should be undertaken to prevent pollution of this river estuary.

Keywords: Bacterial pollution, Bakkhali River estuary, Fish organs, Pathogenic bacteria

Determination of irrigation regime for hot pepper (Capsicum annum L.) in dry-land areas of Wag- Himra, North Eastern Amhara, Ethiopia

Aemro Wale* and Gebrehana Girmay
Sekota Dry Land Agricultural Research Center, P.O. Box 62, Sekota, ETHIOPIA
*Corresponding author’s E-mail: [email protected]
Received: 16 February 2019; Revised received: 26 February 2019; Accepted: 03 March 2019

ABSTRACT
A field experiment to evaluate CROPWAT model estimations was conducted during the year 2014 and 2015 on Ziqualla and Abergelle. This field experiment was therefore conducted to determine net irrigation requirements and irrigation schedules of hot pepper (Capsicum annum L.) using CROPWAT computer model and to validate using field trial. A split plot design with the main plot of water depth and subplot of irrigation frequency has been used. Three levels of water amount with (I1), (I2), and (I3) CROPWAT generated depth and three levels of irrigation frequency at (5), (7) and (9) days interval were used as a treatment. Additionally, one treatment farmer practice irrigation depth and interval has been used as a control. The experimental result showed that irrigation application of I1 CROPWAT generated depth at 5 days irrigation interval obtained a relatively higher and statistically significant marketable yield, water productivity on both Ziqualla and Abergelle. In terms of economic profitability, it was found that irrigation application I1 CROPWAT generated depth at 5 days irrigation interval had 7.7ton/ha and 6ton/ha economically yield advantageous associated that I2 CROPWAT generated depth with 7 days irrigation interval on Ziqualla and Abergelle, congruently. Considering the above results, irrigation application of I1 CROPWAT generated depth at 5 days interval was found economically feasible and recommended to improve crop and water productivity of the irrigation schemes by saving a significant amount of water for irrigating additional lands for hot pepper (C. annum) crop production both Ziqualla and Abergelle small-scale irrigation schemes.

Keywords: Hot pepper (Capsicum annum L.), Irrigation regime, Marketable yield, Wag-Himra, Water productivity

Key to Indian species of genus Brachygrammatella Girault (Hymenoptera: Trichogrammatidae) with re-description of B. indica and some new distributional records

Mohd. Yousuf, Mohsin Ikram* and Neha Rajwar
Forest Entomology Discipline, Forest Protection Division, Forest Research Institute, P.O. New Forest, Dehradun – 248006 (Uttarakhand), INDIA
*Corresponding author’s E-mail: [email protected]
Received: 19 February 2019; Revised received: 25 February 2019; Accepted: 03 March 2019

ABSTRACT
The aim of the study was to re-describe the egg parasitoid Brachygrammatella indica Viggiani and Hayat with some additional morphometric characters, especially of the genitalic component with SEM photography, they are mostly attacked on eggs of hemipterous insect pests and they keep their population under check and balance. During present research, materials were collected from the forestry and adjoining agro-forestry areas of Bihar, Haryana, Punjab, Uttarakhand and Uttar Pradesh by sweeping with net and parasitized eggs collection. In this paper Brachygrammatella indica Viggiani & Hayat is re-described with some new distributional records and key to Indian species of genus Brachygrammatella Girault also updated.

Keywords: Brachygrammatella, Indian species, Re-description records, Trichogrammatidae

Interaction of nitrogen doses and establishment methods in lowland rice at Parwanipur, Bara, Nepal

Mitali Kumari Sah1*, P. Shah1, R. Yadav1, Jit N. Sah2 and Rumesh Ranjan3
1Regional Agricultural Research Station, Parwanipur, Bara – 44400, NEPAL
2Institute of Forestry, Tribhuvan University, Pokhara – 33700, NEPAL
3Indian Agricultural Research Institute, New Delhi – 110012, INDIA
*Corresponding author’s E-mail: [email protected]
Received: 01 January 2019; Accepted: 08 March 2019

ABSTRACT
The experiment was laid out in split plot design: three establishment methods were designed (Puddled transplanted rice, Non- puddled transplanted rice, Conventional dry tillage +DSR) as a main plot and four levels of nitrogen rate (0, 60, 120, 180) as sub plot and replicated three times during summer season of 2015 and 2016 at RARS, Parwanipur. Grain yield and other yield attributes like plant height, penicle length and number of tiller per m2 of rice was observed significantly differed (p<0.05) between different establishment methods and nitrogen levels. In 2015 there was not significant effect of establishment practices on grain yield but significantly highest grain yield (4603 kg/ha) was obtained from application of [email protected] kg/ha and grain yield decreased with increased of nitrogen application @ 180 kg/ha (4365 kg/ha). Results reveled that significantly higher grain yield was obtained under non puddled transplanted rice (3314 kg/ha) than puddle transplanted rice (3280 kg/ha) which were at par with conventional tillage plus DSR (2123 kg/ha) and significantly highest grain yield (3424 kg/ha) was obtained from application of [email protected] kg/ha during 2016. In both years the highest grain yield was obtained from puddled transplanted rice with the nitrogen application @ 120 kg/ha. Based on two years results, it can be concluded that N is limiting factor for the productivity of rice in Parwanipur. Therefore 120 kg/ha nitrogen could be optimum dose for puddled transplanting and direct seeded rice at Parwanipur condition.

Keywords: Establishment methods, Grain yield, Interaction, Nitrogen doses, Rice