Pradip Kumar Sarkar - Academia.edu (original) (raw)

Papers by Pradip Kumar Sarkar

International Journal of Current Microbiology and Applied Sciences

Aegiceras corniculatum L. (Blanco.) is a tropical, small evergreen, true mangrove, and woody shru... more Aegiceras corniculatum L. (Blanco.) is a tropical, small evergreen, true mangrove, and woody shrub or tree species, that grow in the intertidal zone, belonging to the Myrsinaceae family, commonly known as river mangrove and Khalsi in Bengali. It is also known as a crypto viviparous species of mangrove and is one of the pioneer mangroves which can thrive in 3% salinity (6) by secreting salt though its leaf glands (3) . Moreover, it is an important honey-producing mangrove species in the Sundarban of West Bengal and International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 9 Number 11 (2020) Journal homepage: http://www.ijcmas.com

Water, Air, & Soil Pollution

The present study reports the potential of carbon (C) storage in traditional agroforestry systems... more The present study reports the potential of carbon (C) storage in traditional agroforestry systems (i.e., a set of age-old agroforestry systems) under waterlogged environmental conditions from north-eastern India. An experiment was conducted in a farmer’s field and further used CO2FIX model, allometric equations, and destructive sampling methods to know the potential of C sequestration. In this study area, agroforestry system is dominated by woody perennials like Areca catechu, Cocos nucifera, Mangifera indica, Artocarpus heterophyllus, Melocanna baccifera, and Colocasia esculenta as annual crop component. Need-based management of the drainage system has been built-up by making broad/narrow bunds for maintaining water levels at different stages of plant growth. The total annual carbon storage potential of this traditional agroforestry system was estimated as 103.760±8.630 t ha−1year−1. The highest annual carbon storage potential (97.900±8.090 t ha−1year−1) was recorded in annual crop components (i.e., Colocasia) followed by trees and its underlaid soil (4.250±0.340 t ha−1year−1) and lowest for bamboos (1.610± 0. 200 t ha−1 year−1). However, the estimated carbon stored, annually, was 24.992±1.502 t ha−1 year−1 in which Colocasia share maximum contribution (19.600±1.080 t ha−1 year−1) followed by trees + soil (3.798±0.229 t ha−1 year−1) and the minimum contribution from bamboos (1.594±0.193 t ha−1 year−1). Moreover, total carbon loss from harvesting of this system was 78.768±7.128 t ha−1 year−1. The study, therefore, recommends this agroforestry system for other waterlogged ecosystems at regional and/or global scale under a warm per-humid climate for both livelihood opportunities and environmental sustainability.

The crops like Rice, Finger millet, Black gram and Horse gram were grown as sole crops and as mix... more The crops like Rice, Finger millet, Black gram and Horse gram were grown as sole crops and as mixed crops in all four paired combinations in 1:1 ratio (i.e., Rice + Black gram, Rice + Horse gram, Finger millet + Black gram and Finger millet + Horse gram) as treatments to estimate the effects on weed biomass and diversity and on systems’ effectiveness. The study showed that, there were significant differences between different treatments in respect of total grain yield of target crops and weed diversity parameters. Significantly higher grain yield in cropping system was recorded in Finger millet (3.72 t ha) as sole crop followed by Finger millet + Black gram (3.11 t ha) and Finger millet + Horse gram (3.11 t ha) as mixed crop and the lowest grain yield was recorded in Rice (1.30 t ha) as sole crop. Compared to sole crops, weed biomass was significantly reduced by mixed crops of Finger millet + Black gram (0.20 t ha) and Finger millet + Horse gram (0.30 t ha). The correlation between ...

Biomass and carbon storage in orchard ecosystems serve as significant carbon sinks to reduce glob... more Biomass and carbon storage in orchard ecosystems serve as significant carbon sinks to reduce global warming. The objective of this study was to determine the best-fitted model for non-destructive prediction of dry biomass and carbon stock in Psidium guajava. Richard’s model was well validated and considered as best performing with lowest Akaike information criterion of 90.13, root mean square error of 1.69 kg tree and highest adjusted R of 0.981. Tree components like leaves, branches, bole, total above-ground biomass, total below ground biomass and root biomass were fitted in Richard’s model for dry biomass and carbon stock prediction. The total dry biomass of P. guajava ranged from 0.54 to 9.26 Mg ha in 2–10years-old orchards. The highest mean dry biomass across tree components was observed in branches, while roots recorded the lowest mean biomass. The total carbon stock was 0.27 and 4.19 Mg ha with CO2 sequestration potential of 0.76 and 11.54 Mg ha in 2-year and 10-year-old orcha...

Indian Journal of Animal Research

Background: In view of abundant availability of Spilanthes paniculata in flora of Jharkhand and w... more Background: In view of abundant availability of Spilanthes paniculata in flora of Jharkhand and widely reported benefits of its dried flowers, the current study aimed to explore the possibility and to quantify the effect of use of flowers of S. paniculata as feed additives in stimulating body growth in poultry birds. Methods: A four week experiment consisting of 60 numbers of poultry birds (Divyan Red) of five months old subjected to four treatments consisting of 15 birds in each treatment distributed equally with 5 replications, was undertaken during 2016-19 following randomized block design to observe the effect of feeding dried flowers of S. paniculata on body weight increase in poultry birds. Result: Feeding of dried flowers of S. paniculata @ 10 g/bird/day resulted in a gradual increase in rate of weight gain up to 14 days of feeding, whereas feeding @ 15 g and 20 g/bird/day resulted in increase in body weight gain up to 7 days. Feeding @ 10 g/bird/day resulted in highest body ...

Journal of Entomology and Zoology Studies, 2020

To improve the socioeconomic status of the traditional farmer, backyard poultry is a handy enterp... more To improve the socioeconomic status of the traditional farmer, backyard poultry is a handy enterprise with low-cost initial investment, but high economic return along with guarantee for improving protein deficiency among the poor. A study was conducted to find out the performance of backyard poultry viz. Vanaraja and Kaveri in tribal villages in Jharkhand. In total 117 (76 male and 41 female) tribal backyard poultry farmers were purposively selected for the present study from four villages of Ranchi district. These farmers procured improved variety of egg from institute farm for hatching in traditional method by deshi broody hen during 2015 to 2019. The data were collected for growth, feed intake, egg production, egg weight, egg consumed, egg sold, live bird sold including rearing cost and return on back yard poultry farming. The socioeconomic data reveals that 63.24 % farmers depended on crop and livestock for their livelihood and 24.79 % on a combination of crop, livestock and non...

International Journal of Chemical Studies

Heritiera fomes (an important threatened mangrove) belongs to the family Sterculiaceae, is well k... more Heritiera fomes (an important threatened mangrove) belongs to the family Sterculiaceae, is well known to be used as folk medicine for curing heart diseases, diabetes, pain, diarrhoea, skin disorders and hepatic disorders. Moreover, the ethanolic extract of stem bark had been reported to have the properties like antioxidant, lipoxygenase inhibitory, antihyperglycemic, antinociceptive effects and antibacterial activities. Being an important species, its multiplication is must. But in general, its multiplication through seeds is difficult due to having problems of seed collection, habitat type, seed viability and short storage life of seeds. In contrary, in vitro micropropagation could be one of the options. Hence, a study was conducted to investigate the callus induction from nodal and leaf explants of H. fomes under in vitro micropropagation for development of a protocol for future work. The result revealed that, the MS (Murashige and Skoog) medium containing BAP (2.0 mg/l) + NAA (1.0 mg/l) was found to be the most suitable for callus induction and mass of callus (i.e., fresh weight and dry weight) from nodal explants and the MS medium containing BAP (2.0 mg/l) + NAA (2.0 mg/l) was best for the callus induction and mass of callus (i.e., fresh weight and dry weight) from leaf explants of H. fomes.

AGRICULTURE & FOOD: e-Newsletter – Volume 1 – Issue 3, 2019

The CO2FIX model is a tool or software, which is extensively used for assessing baseline carbon a... more The CO2FIX model is a tool or
software, which is extensively used for
assessing baseline carbon as well as estimating
carbon sequestration potential (CSP) of any
land-use systems, more particularly the
potentiality of every individual component
(i.e., trees, shrubs, agricultural crops or
pastures, soil, etc.). This tool is not only can
quantify the carbon stock, but also can
quantify the C-fluxes in the biomass of any
land-use systems, soil organic matter and also
can quantify the C-fluxes in wood products
chain. Moreover, this model can simulate the
result for “n” numbers of years and can
estimate the prediction values. Hence, this
tool can be a very useful to the forester,
scientists, researchers and academician in
estimating the CSP of any system and it’s
future predictions in terms of carbon stock and
fluxes.

AGRICULTURE & FOOD: e-Newsletter – Volume 1 – Issue 2, 2019

Bamboos are the fast growing, durable and versatile natural resources which can be substituted ag... more Bamboos are the fast growing, durable and versatile natural resources which can be substituted against timber. Bamboo plantations not only can rehabilitate wastelands/ non-arable/ degraded lands but also can play a vital role in improving livelihood and nutritional security of rural people and thereby rural industry too. The direct and indirect benefits from the adoption of location specific bamboo based agroforestry systems or the technologies will lead towards economic prosperity and ecological security of the nation.

Current Science, 2019

An experiment was conducted to evaluate the performance and characterize plant growth behaviour, ... more An experiment was conducted to evaluate the performance
and characterize plant growth behaviour, light
profile and soil fertility status of seventeen different
trees (12 years old). The study indicated higher biomass
production potential of Gmelina arborea, Dalbergia
sissoo and Leucaena leucocephala. Higher
photosynthetically active radiation value below tree
canopy indicates compatibility of trees with a majority
of agricultural crops. In the present study, a significant
increase in pH and decrease in EC of trees were
observed. The significant reduction in nutrients in
different trees indicated a need for replenishment of
nutrients in soil for maintaining soil fertility in agroforestry
systems on long-term basis.

AGRICULTURE & FOOD: e-Newsletter Volume 1 -Issue 4, 2019

The coal mined areas require immediate attention for its rehabilitation, if the present situation... more The coal mined areas require immediate attention for its rehabilitation, if the present situation is allowed to continue, it will degrade air quality, water quality and land productivity. Thus this will not only cause inconvenience to the people but also affect the health and environmental conditions. Hence, to create better condition and environment, one has to consider the various means and ways of rehabilitation, followed by area specific technological interventions. One of the interventions may be the plantations (e.g. afforestation/ reforestation/ agroforestry models). It is evident from earlier studies that, the performances of leguminous species like Acacia catechu, Albizia lebbeck, Dalbergia sissoo and Pongamia pinnata planted on mined areas are better than many others species. Even, bamboos like Dendrocalamus strictus, Bambusa sp., etc. are also found to grow well under such extreme mined situation. Hence, research efforts need to be strengthened further for identification of species with short gestation period suitable for coal mined areas and making available the quality planting material by establishing nursery.

AGRICULTURE & FOOD: e-Newsletter – Volume 1 – Issue 6, 2019

The agarwood tree is a multipurpose tree species (MPTs), being exploited mainly for ethno-medicin... more The agarwood tree is a multipurpose tree species (MPTs), being exploited mainly for ethno-medicinal, ethno-botanical as well as pharmaceutical uses. The leading market demand had led to over exploitation of natural population of this species. Due to over exploitation, the species became critically endangered and vulnerable under IUCN red list. Hence, to meet the demand and to reduce the pressure on the forest and at the same time to conserve the species from being extinct, suitable agroforestry systems and silvicultural measures are to be developed. However, few farmers in India were already cultivating agarwood tree in a solitary or in integration with other crops like Tea, Patchouli (Pogostemon cablin), Sarpagandha (Rouvolfia serpentine), Jatropha, Pepper (Piper longum), Pineapple, Turmeric, Arecanut and with other agricultural crops. Introducing this agar tree with other crops had given additionally huge returns to them. Many literatures revealed that, the integration of agarwood with tea crop can contribute a good amount of subsidiary income up to 45% of the total annual income of the family, which is even higher than the reported 7% average annual gross income per household in Upper Assam. This means, the agarwood plantation has the potential to improve the livelihood of the rural communities or the growers to a greater extent. Furthermore, the good pollarding and coppicing capacity of agar tree has made it suitable to fit in agroforestry. Many researchers had even recommended the agarwood tree as a component in agroforestry systems. Hence, agarwood based agroforestry systems can be a viable option to the growers for improving their livelihood.

Field experiment was conducted during rabi and kharif seasons of 2011 and 2012 at research farm o... more Field experiment was conducted during rabi and kharif seasons of 2011 and 2012 at research farm of ICAR–RC for
NEH Region, Tripura centre, to assess the competence of different organic sources for substituting the 50% N fertilizer in
integrated nutrient management system of rice (Oryza sativa L.) production. Data reveals that the substitution of 50%
recommended dose of N fertilizer with either FYM@11.2 tonnes/ha or Glyricidia leaves @ 11.6 tonnes/ha significantly
improved the growth and yield attributes of both rabi and kharif rice as compared to 100% recommended N fertilizer dose
(80 kg N/ha). The maximum values of growth attributes (plant height, tillers/hill and total dry matter accumulation/hill),
yield attributes (productive tillers/hill, panicle length, filled grains/panicle and 1 000 grain weight) and grain yields of rice
was obtained with 50% recommended N fertilizer dose along with either FYM@11.2 tonnes/ha or Glyricidia leaves @
11.6 tonnes/ha during both the seasons. Therefore, study suggested that the Glyricidia leaves has the competence for
substituting the 50% recommended dose of N fertilizers and a suitable option for improving the productivity of lowland
rice in Tripura region of North-East India.