Open Access Original Research Article

Monitoring of Fish and Shellfish Biodiversity and Marketing Channels in Fish Landing Centre, Noakhali, Bangladesh

Smriti Chakraborty, Debasish Saha, Swapan Chandra Dey, Rahima Yasmin

Current Journal of Applied Science and Technology, Page 11-27
DOI: 10.9734/cjast/2020/v39i4331136

The present study was conducted to know the species diversity and marketing channels of fish and shellfishes in Chairman Ghat Fish Landing Center, Noakhali. The diversity status of fish and shellfishes was assessed by collecting samples from the study area for a period of one year. Collected samples are identified in the laboratory of Noakhali Science and Technology University. Only 32 fish species, 4 prawn and 1 shrimp species under 22 families were found during the study period. The highest number of species (4) was found from the family Engraulidae and Palaemonidae. Among the species of fishes found, twenty-four (24) species were considered as not threatened (NO), three (3) as critically endangered (CR), and ten (10) as data deficient (DD). The non-availability and less availability of fish species indicate the alarming decline of the biodiversity of fishes in the study area and in the country as a whole. Apart from this, general pattern of marketing channels in the Chairman Ghat Fish Landing Center is - after buying fish from fishermen, middlemen bring to the wholesale market and sell to the wholesaler. The retailers buy fish from wholesaler through auction with a highest bid. The retailers then bring the fish to particular market where they usually sell the fish to the consumers. But consumers can buy fish directly from fisherman or from arotdar, or may be from beparies. Therefore, in depth long-term investigation of fish is urgently needed not only for the conservation and rehabilitation, but also for creating the awareness among the policy makers of the government and non-government organizations, groups and general mass. Finally, the outputs from this study can be applied in the development of national biodiversity strategies, biodiversity conservation planning and in integration of biodiversity information within the development and environmental planning process.

Open Access Original Research Article

In –Vitro Assessment of Probiotic Attributes of Propionibacterium freudenreichii Isolated from Dairy Cheese

K. Harish Kumar, V. C. Suvarna, B. H. Sarvani, R. U. Abhishek, Veena S. Anil

Current Journal of Applied Science and Technology, Page 28-37
DOI: 10.9734/cjast/2020/v39i4331137

Dairy propionibacteria possess innumerable advantages as probiotics, in food preservation and vitamin production. Propionibacterium freudenreichii is one among them and is known to produce cyanocobalamine (Vitamin B12) in stable quantities. Deficiency of Vitamin B12 is a major health issue among vegetarians and vegans making it a global concern.  Hence, an attempt has been made to isolate Propionibacterium from dairy products. Propionibacterium isolates were enumerated by employing standard dilution plate count technique using yeast extract lactone agar (YELA). Gram’s reaction, pigmentation, catalase test, endospore production, nitrate reduction, gas production, fermentation of sucrose and maltose were performed to eliminate non-propionibacteria during isolation. Isolates that tested Gram positive, pigmented, catalase positive, non-endospore formation and could ferment sucrose as well as maltose were further used for identification by 16S rRNA sequencing. One isolate was confirmed to be Propionibacterium freudenreichii (PF) as identified by 16s rRNA gene amplification and Sanger’s sequencing. The confirmed isolate was subjected to various tests to check for its probiotic attributes. Haemolysis activity was tested to ensure non-pathogenicity using blood agar medium and isolate was found to be non-pathogenic. Antibiotic susceptibility pattern of the isolate was studied using currently prescribed seven antibiotics representing activity against both Gram-positive and Gram-negative bacteria. The isolate was found sensitive for all the seven antibiotics tested. The isolate was able to tolerate the pH till 2 and sustain by exhibiting minimal growth at 2.0 g L-1 of bile salts. Results reveal that PF, isolated native culture from cheese, proved to possess attributes for probiotic agent under in -vitro conditions.

Open Access Original Research Article

On-farm Fertility Management through Target Yield Approach for Sustenance of Tribal Farmers

Kasthuri Rajamani, A. Madhavi, T. Srijaya, P. Surendra Babu, Pradip Dey

Current Journal of Applied Science and Technology, Page 58-65
DOI: 10.9734/cjast/2020/v39i4331140

The demonstrations on on-farm fertility management through desired yield target were conducted with castor and maize crops at 15 farmers’ fields during rabi 2016-17 at Peddatanda and Sainapally tanda of Nagarkurnool District, Telangana to improve sustenance of tribal farmers and to verify the fertilizer prescription models & to analyze the economics of these models to enhance the productivity and profitability. The results revealed that the targeted yield prescription models ensured higher seed yield, response yard-stick and nutrient ratio to the applied fertilizers, and additional benefits from higher produce, a good benefit-cost ratio obtained over the farmers’ practice. The seed yield from the pre-fixed targets of 25 and 60 q ha-1 of castor and maize were achieved within ± 10 % yield deviation at almost all the locations, which ensure for further nourishment of tribal farmers. The targeted yield prescription models for fertilizer recommendations were more precise to achieve the targeted yield, additionally led to higher profits and soil health.

Open Access Minireview Article

Chandrayaan-2: A Memorable Mission Conducted by ISRO

Buddhadev Sarkar, Pabitra Kumar Mani

Current Journal of Applied Science and Technology, Page 43-57
DOI: 10.9734/cjast/2020/v39i4331139

Aims: The Chandrayaan-2 aims to wave the Indian flag on the dark side (South Pole) of the Moon that had never been rendered by any country before. The mission had conducted to gather more scientific information about the Moon. There were three main components of the Chandrayann-2 spacecraft- an orbiter, a lander, and a rover, means to collect data for the availability of water in the South Pole of the Moon.

Place and Duration of Study: The rover (Pragyan) was designed to operate for one Lunar day that is equivalent to 14 Earth days, whereas the orbiter is assumed to orbit the Moon for seven years instead of the previously planned for just one year.

Overview: The Chandrayaan-2 spacecraft launched by India's heavy-lift rocket Geosynchronous Satellite Launch Vehicle-Mark III (GSLV MKIII) from the Satish Dhawan Space Center launch pad located on Sriharikota island of Andhra Prades. Unlike, Chandrayaan-1, this lunar mission aimed to perform a soft-landing on the South Pole of the Lunar surface and do scientific experiments with the help of the rover (Pragyan).

Reason: The Chandrayaan-1, the first lunar mission of ISRO that detected water molecules on the Moon. The Chandrayaan-2 was a follow-on mission of Chandrayaan-1 to explore the presence of water molecules on the South Pole of the Moon.

Conclusion: Although the orbiter fulfilled all of the command, unfortunately, the lander (Lander) lost its communication at the last moment to touch the Moon’s surface softly. Despite that, India again showed its potential in space missions. Chandrayaan- 2 was the most low budget lunar mission ever conducted by any space organization. The developing or even underdeveloped countries may come forward in their space program as ISRO is showing a convenient way in space missions.

Open Access Original Research Article

Distribution of Various Geochemical Forms of Potassium under Horticulture Land Use System of District Ganderbal

. Khushboo, Mohammad Auyoub Bhat, Mushtaq Ahmad Wani, Shabir Ahmed Bangroo

Current Journal of Applied Science and Technology, Page 1-10
DOI: 10.9734/cjast/2020/v39i4331135

Surface (0-20 cm) and sub-surface (20-40 cm) soil samples were collected from five locations under horticulture land use system of District Ganderbal. The distribution of potassium forms (water soluble, available, exchangeable, non-exchangeable, fixed, lattice and total) were investigated. Soil samples were analyzed for different physical and chemical properties and fractions of potassium. The soils were slightly acidic to neutral in reaction  and soil texture varied from silty clay loam to silt loam. Irrespective of soil depth sequential order of potassium fractions were TK>LK>FK>NEK>AK>EK>WSK. The trend of decrease in water soluble and exchangeable K was noticed in these soils from surface to sub-surface layers. All forms were in dynamic equilibrium with one another and  positively  and significantly correlated with  Organic carbon, CEC, Silt and clay and negatively to sand.

Open Access Original Research Article

Performance of Some Bivoltine Silkworm,Bombyx mori L. Hybrids during Summer

Naveena Nazim, Shabir Ahmad Bhat, M. F. Baqual, Shakeel Ahmad Mir

Current Journal of Applied Science and Technology, Page 38-42
DOI: 10.9734/cjast/2020/v39i4331138

Aim: The present study was aimed to find out the robust hybrid during summer season under temperate climatic conditions.

Study Design: Completely Randomized Design (CRD).

Place and Duration of Study: College of Temperate Sericulture (CoTS) Mirgund, Sher-e-Kashmir University of Agricultural Sciences and Technology, of Kashmir (SKUAST-K), in the year 2014.

Methodology: The disease free layings (dfl’s) of the selected hybrids viz., SK31× SK13, SK6 × SK13 and CSR18× CSR19 were obtained from the Germplasm Bank maintained at College of Temperate Sericulture (CoTS) Mirgund, Sher-e-Kashmir University of Agricultural Sciences and Technology, of Kashmir (SKUAST-K). Thesedfl’s were incubated, brushed and reared up to 3rd instar en masse following the standard rearing procedure. Just after 3rdmoult, 3 replications of 100 larvae in each treatment were maintained. Cocoon and post cocoon parameters viz, pupation rate, single cocoon weight, single shell weight, shell ratio, raw silk, denier and leaf cocoon ratio were calculated and recorded during the course of experimentation.

Results: No significant difference was recorded in pupation rate among the hybrids. H1 hybrid was found significantly superior over H2 and H3 for single cocoon and shell weight with mean value as 1.957 and 0.406 respectively. On the other hand influence of hybrids over shell ratio remained non significant. The performance of silkworm hybrids with respect to raw silk was recorded higher in H1 (17.98%) followed by H2 (17.96%) and H3 (17.93%), while the fine denier of 2.86 d was reported in H3 followed by H1 (2.94d) and H2 (3.01d). Leaf cocoon ratio was recorded lower in H1with mean value as 15.16 /100 dfl’s.

Conclusion: Significant differences among the hybrids were observed, but no hybrid performed better in all traits studied, however in maximum traits SK31× SK13, seems to be superior to the other two studied hybrids.

Open Access Original Research Article

Reweigh Temperature as Estimator for Evaluation and Prediction

M. K. Awasthi, Deepak Patle

Current Journal of Applied Science and Technology, Page 66-71
DOI: 10.9734/cjast/2020/v39i4331141

This study aimed to develop estimator for evaluation of reweigh temperature for prediction research extent. Research conducted in Jabalpur district of Madhya Pradesh, India, which comes under the humid subtropical climate region. Temperature recorded at one hour, two hour or three hour either side of maximum temperature may be averaged to get a plateaued value for that much time period. Hourly data on temperature recorded at Weather Underground site are regrouped into different temperature forms namely average of maximum and minimum temperature (Tav), weighted temperature (Twt), maximum temperature (Tmax), Temperature plateaued one hour, two hour and three hour either side of maximum temperature (Tp2, Tp4 and Tp6 respectively). These temperature forms are plotted for all twelve months. Integration of Tav and Tmax was done for estimation of weighted temperature. Values of coefficient of determination raised from fitting of linear regression between each of temperature form; Tmax, Tav, Twt, Tp2 Tp4 and Tp6 with actual pan evaporation. Data set comprises of daily records separately for all twelve months. Daily records are also regrouped into four more categories i.e. for whole year (365 days), hot months (April-May), cold months (December- January) and wet months (July-August). Though the r-squared values are found very low and explains that temperature alone cannot be taken as predictor of evaporation, which is a well comparative fact, but the purpose of presenting these values here to show the comparative effect of different temperature forms on evaporation. In hot months, the Twt with r-squared values of 0.49 seems to be more correlated than other temperature forms. But, in cold months Tmax, Tp2, Tp4 and Tp6 have more influence on evaporation than the Tav or Twt. The research outcome of the present study will be helpful to estimation of reweigh temperature rather average of maximum and minimum temperature for use in prediction research work.

Open Access Original Research Article

Attitude of Farmers towards Information and Communication Technology (Ict) Tools

B. Jaswanth Naik, B. Mukunda Rao, P. Rambabu, M. Sree Rekha

Current Journal of Applied Science and Technology, Page 72-81
DOI: 10.9734/cjast/2020/v39i4331142

Agriculture sector is one among the foremost important sector in India which might be benefited with the utility of ICTs. Therein regards, extensive use of information technologies got to be promoted to farm level for transfer of technologies. The main target of the study was on the attitude of farmers towards information and communication technology tools in Anantapur district of Andhra Pradesh. Interview schedule was used for data collection from the farmers and appropriate statistical tools were used to analyze the collected data. Proportionate random sampling was used in the selection of one hundred and twenty (120) farmers as the sample of the study. The outcomes confirmed that the majority (73.34%) of farmers had medium level of attitude towards ICT tools followed by high (15.00%) and remaining (11.66%) of the farmers had low level of attitude towards ICT tools. Findings of multiple linear regression shows that all the fourteen independent variables put together contributed 75.80 per cent of the total variation in the attitude towards ICT tools by the farmers. The regression coefficient results revealed that the profile characteristics namely age, farming experience, farming experience in ICT tools, training undergone, social participation, innovativeness, economic orientation and risk orientation were found to be positively significant. Remaining profile characteristics viz., education, land holding, possession of ICT tools, annual income, extension contact, scientific orientation and cosmopoliteness were non-significant with the attitude towards ICT tools.

Open Access Original Research Article

Simultaneous Effects of the Climate Change and the Recent Hydromorphological Modification of Vridi Channel (Côte d'Ivoire) on Some Its Hydrochemical Characteristics

N'da Samuel, Yao Marcel Konan, Trokourey Albert

Current Journal of Applied Science and Technology, Page 82-97
DOI: 10.9734/cjast/2020/v39i4331143

This work aims to assess the simultaneous effects of the climate change and the hydromorphological modification of Vridi channel on its hydrochemistry. To best estimate, this fact, the seasonal dynamic of the particle size distribution, pH, redox potential, salinity, conductivity, moisture and organic matter contents of Vridi channel sediments have been followed and compared during two different annual periods, where the climate and the hydromorphology of this estuary have been different. The first annual period, covering the period from April 2014 to March 2015, has been characterized by a climatic regime close to the climatic normal of the study area and, this channel had its former hydromorphology. The second period annual, covering the period from October 2018 to September 2019, has been marked by a disruption of the climatic regime throughout Côte d'Ivoire, and this channel presented its modified hydromorphology.

A monthly sampling has been done in this channel during each annual period. All These physical and chemical parameters have been determined by the corresponding AFNOR standards.

Results have shown that these superficial sediments, with a predominantly sandy texture over the period from April 2014 to March 2015, have presented a texture predominantly of silt and clays over the period from October 2018 to September 2019. The climate change and the recent hydromorphological modification of this ecosystem had simultaneous very few effects on their pH and redox potential over the study period. On the other hand, they have caused an important increase in their salinity, moisture and organic matter contents and, a decrease in their electrical conductivity over the period from October 2018 to September 2019 relative to those determined in these substrates over the period of April 2014 to March 2015. This fact has certainly affected its biodiversity, especially that of its benthic fauna.

Open Access Original Research Article

Evaluation of Wine Purpose Varieties of Grapes under the Environmental Condition of Malwa Plateau

S. R. Anjanawe, I. S. Naruka, Asheesh Sharma, Pradeep Mishra

Current Journal of Applied Science and Technology, Page 98-107
DOI: 10.9734/cjast/2020/v39i4331144

The quality of wine totally depends on the variety of grape. Grapes are unique among fruits. Ripe, they contain sufficient sugar and an appropriate amount of acid so that when they ferment enough alcohol is produced to make a palatable wine that is protected against imminent spoilage. In present investigation experiment was carried during 2014 to 2016 for 3 year. Treatment performance was observed using Tukey’s mean separation method in 95% percent confidence interval. Under this experiment grape ten variety tested under different characteristics. From the result it is found that number of mature and fruitful cane maximum found in Shiraz variety 39.61 and 22.05. Total soluble Solid (TSS) and acidity is important aspect for wine preparation. Minimum TSS and acidity was found in Shiraz variety 0.62 and 18.5. Highest yield variety was recorded in Grenache. From the study, it is observed that performance of Shriraz variety is most suitable for wine preparation in Malwa plateau.