ICAR Research Complex for Eastern Region

Patna, India

ICAR Research Complex for Eastern Region

Patna, India

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Barman D.,National Research Center for Orchids | Naik S.K.,ICAR Research Complex for Eastern Region
Journal of Plant Nutrition | Year: 2017

The study evaluates the effect of various potting media, nutrition, and growth regulators on production and nutrient composition of leaf and pseudobulb of Cymbidium hybrid “Baltic Glacier Mint Ice” grown in greenhouses. The results confirmed a positive influence of growth and nutrition on flower yield of Cymbidium, with shredded tree bark+ coconut husk + brick bits giving the best flowering. A nitrogen, phosphorus and potassium (NPK) dose of 200:200:200 mg l−1 with benzyl adenine (BA) and gibberellic acid (GA3) at 50 mg l−1 was found best for growth while an NPK dose of 200:100:100 mg l−1 with BA and GA3 at 50 mg l−1 was suitable flower production of Cymbidium hybrid. Application of an NPK dose of 300:200:300 mg l−1 with BA and GA3 at 500 mg l−1 was found to be best for enhancing flowering frequency. Plants of the Cymbidium hybrid with the best flowering characteristics mostly contained significantly higher concentrations of nitrogen (N), phosphorus (P) and potassium (K) in leaves and pseudobulbs (which acts as reservoir of nutrients). © 2017 Taylor & Francis Group, LLC.

Meena M.S.,CAZRI Campus | Singh K.M.,ICAR Research Complex for Eastern Region
Journal of Environmental Management and Tourism | Year: 2013

The natural resources of most developing countries are under increasing stress, and many nations are increasingly concerned about achieving environmental sustainability through efficient use of land and water resources. As population is escalating very fast and consumer demand for high value agricultural products (fruits and vegetables, animal or fish products, etc.) is also changing rapidly. Hence, need to take stronger step by national governments to monitor their natural resources and take immediate steps to maintain these resources when being overused. Data generation by visiting the place physically is tedious and time consuming. Modern ICT techniques provide solutions helpful in collecting data without visiting the place from distance. With development of modern technologies, ICTs are of immense use in Sustainable Natural Resource Management. These technologies are time and money saving, accurate compared to conventional assessment. Products of these technologies help the scientists and policy makers for taking appropriate decision in agriculture production. It is thus important to recognize that the dissemination of these land and water-use management practices are largely knowledge-based; therefore, developing countries will be required to make substantial investment in public extension to train small and medium-scale farmers how to use Sustainable Natural Resource Management (SNRM) practices.

Dey P.,ICAR Research Complex for Eastern Region | Dey P.,Indian Central Soil Salinity Research Institute | Sarkar A.K.,Birsa Agricultural University
Indian Journal of Traditional Knowledge | Year: 2011

As in other parts of the world, the indigenous people of Jharkhand hold important context-relevant knowledge and strategies for addressing dwindling natural resources base and climate change. The paper documents some of the collective wealth of indigenous knowledge related to agricultural practices, including land preparation/ manuring/ soil treatment, cropping systems, input management, water resource management and utilization, and soil and water conservation practices, used especially by tribal farmers of the region. Related research and policy issues essential for successful amalgamation of such indigenous knowledge in resource conservation and climate change adaptation are also discussed. It concludes that the indigenous knowledge will help to address food and nutritional security in the face of climate change.

Jha M.N.,Rajendra Agricultural University | Chaurasia S.K.,Rajendra Agricultural University | Bharti R.C.,ICAR Research Complex for Eastern Region
Communications in Soil Science and Plant Analysis | Year: 2013

We assessed the cyanobacterial inoculation, green manure (GM) application, and chemical nitrogen (N) fertilization on grain/straw yield, nutrient balance, and nitrogenase activity under individual and integrated nutrient management mode in a rice-wheat cropping sequence. Individual and integrated application of cyanobacterial biofertilizer (CB) and GM with chemical fertilizer improved the soil health and production of rice crop. Integration of cyanobacterial and green manure resulted in a savings of 50 kg N ha-1. Functional relationships (R2, -83.5 to 95.7%) between the different sources of nutrients revealed that the maximum positive contribution of cyanobacteria was on final available N (45.2%) and available phosphorus (P, 18.5%). Green manure had the greatest contribution to total N, total P, zinc, iron, and manganese (Mn). However, cyanobacteria had a negative relationship with Mn and sodium (Na, -30.19%). A negative relationship with Na indicates the possibility of using cyanobacteria as an ameliorating agent for salt-affected soil. © 2013 Copyright Taylor and Francis Group, LLC.

Islam A.,ICAR Research Complex for Eastern Region | Sikka A.K.,ICAR Research Complex for Eastern Region | Saha B.,ICAR Research Complex for Eastern Region | Singh A.,ICAR Research Complex for Eastern Region
Water Resources Management | Year: 2012

Climate change can significantly affect the water resources availability by resulting changes in hydrological cycle. Hydrologic models are usually used to predict the impacts of landuse and climate changes and to evaluate the management strategies. In this study, impacts of climate change on streamflow of the Brahmani River basin were assessed using Precipitation Runoff Modeling System (PRMS) run under the platform of Modular Modeling System (MMS). The plausible hypothetical scenarios of rainfall and temperature changes were used to assess the sensitivity of streamflow to changed climatic condition. The PRMS model was calibrated and validated for the study area. Model performance was evaluated by using joint plots of daily and monthly observed and simulated runoff hydrographs and different statistical indicators. Daily observed and simulated hydrographs showed a reasonable agreement for calibration as well as validation periods. The modeling efficiency (E) varied in the range of 0.69 to 0.93 and 0.85 to 0.95 for the calibration and validation periods, respectively. Simulation studies with temperature rise of 2 and 4°C indicated 6 and 11% decrease in annual streamflow, respectively. However, there is about 62% increase in annual streamflow under the combined effect of 4°C temperature rise and 30% rainfall increase (T4P30). The results of the scenario analysis showed that the basin is more sensitive to changes in rainfall as compared to changes in temperature. © 2012 Springer Science+Business Media B.V.

Choudhary J.S.,ICAR Research Complex for Eastern Region | Prabhakar C.S.,ICAR Research Complex for Eastern Region | Moanaro,ICAR Research Complex for Eastern Region | Das B.,ICAR Research Complex for Eastern Region | Kumar S.,ICAR Research Complex for Eastern Region
Phytoparasitica | Year: 2013

The litchi stink bug Tessaratoma javanica (Thunberg) (Hemiptera: Tessaratomidae) is a minor insect pest of litchi (Litchi chinensis Sonn.) in India. Recently, an outbreak of litchi stink bug was observed in the Chotanagpur plateau of Jharkhand, India, during February-April 2011. A description of the outbreak is given in this report. Females were found to be highly fecund and caused severe damage to the litchi crop (>80%) in the region. Incubation period of eggs was found to be 12.80 days. The mean nymph population was 45.66 nymphs per 30-cm shoot length, and the maximum was159 nymphs, observed during March and April 2012 on litchi trees. The outbreak of the pest may be due to the migration of bugs from wild kusum (Schleichera oleosa (Lour.) Oken) plants (a host plant of the litchi stink bug) to the cultivated litchi crop. During the course of the investigation, two natural enemies were found on litchi stink bug, viz., Anastatus bangalorensis Mani & Kurian and Ooencyrtus sp. However, the natural parasitization by the parasitoids was very low, 3.5%. Considering the damage caused to the litchi crop in this region, the recent outbreak created an alarming situation for the pest management researchers of the country to develop suitable integrated pest management strategies in the near future. Otherwise this will become a major problem to the litchi growers as well as to industries associated with this delicious fruit in India. © 2012 Springer Science + Business Media B.V.

Rahman A.,ICAR Research Complex for Eastern Region
Journal of Agricultural Science and Technology | Year: 2015

Pressurized irrigation technologies of course have the potential to raise the productivity of land and water; but, these technologies could not popularize among the smallholders who own millions of farms worldwide. In developing pressurized irrigation technologies, particularly for field crops irrigation, researchers and manufacturers have developed more specialized and expensive technologies with sophisticated and intricate hardware. These new technologies have benefited only the large and wealthier farmers leaving the smallholders to remain confined with conventional methods of irrigation. This paper discusses the design, performance, and applicability of a low-pressure water sprinkling nozzle, named LERN. This nozzle can be operated satisfactorily over the operating pressure range of 79-117 kPa. The water application rate of LERN is reasonably high, i.e. 20-23 mm h-1; therefore, field crops such as rice, wheat, oil seed etc. can be irrigated quickly and efficiently even at small plots, where available options such as impact sprinklers are, in general, neither feasible nor applicable due to high pressure requirement (196 - 294 kPa), non-divisibility over small plots, and relatively high cost of pumping and system networking. Since the pressure requirement at the nozzle head reflects overall cost of a pressurised irrigation system, LERN holds greater promise in development of a cost effective pressurized irrigation system for irrigating field crop even at small plots. © 2015, Tarbiat Modares University. All rights reserved.

Singh A.K.,ICAR Research Complex for Eastern Region | Bhatt B.P.,ICAR Research Complex for Eastern Region
Bangladesh Journal of Botany | Year: 2015

Highest and lowest plant height at harvest was recorded with application of 0.08% Zn and in control treatment, respectively. Longest and shortest roots were recorded in the plots treated with 0.08% Zn and control respectively. Zn treatment of 0.04% produced maximum lentil seed whereas lowest was recorded under control.

Singh A.K.,ICAR Research Complex for Eastern Region | Bhatt B.P.,ICAR Research Complex for Eastern Region
Indian Journal of Agricultural Sciences | Year: 2013

Field experiment was conducted to develop zinc management strategy for late sown lentil (Lens culinaris Medik) crop alone or in cropping system mode during 2008-09 and 2009-10. Four levels of Zn, viz. Zn1control (0.0%), Zn2(0.02%), Zn3(0.04%), Zn4(0.08%) were applied foliar twice, first at preflowering and second at post podding stage. Highest (42.2 cm) and lowest (32.8 cm) plant height at harvest was recorded with application of 0.08% Zn and in control treatment. Longest (12.1cm) and shortest (7.9cm) root was recorded in the plots treated with 0.08% Zn and control respectively. Zn treatment (0.04%) produced maximum lentil seed (1 238.6 kg/ha), whereas lowest (1 063.1 kg/ha) was recorded under control. Highest nitrogen concentration (1.98 per cent) and N uptake (55.7 kg/ha) was recorded in plots fertilized with Zn applied @0.08%. Gradual buildup of organic carbon, N, P and K and zinc content in the soil were also noticed. It is recommended that under late sown condition foliar feeding with 0.04 % Zn twice during preflowering and post podding stage will increase lentil seed yield by 16.2%.

Singh A.K.,ICAR Research Complex for Eastern Region
Indian Journal of Horticulture | Year: 2013

To know the extent and pattern of response by faba bean (Vicia faba L.) to alterations, a two year field experimentation was carried out with two crop establishment methods (i) flatbed planting, and (ii) raised bed planting; four planting geometries (i) 30 x 20 cm (ii) 30 x 30 cm (iii) 30 x 45 cm, and (iv) 45 x 45 cm; and three seeding depths in factorial experiment in complete randomized block design with three replications. Germination was significantly higher under raised bed planting (85.7 per cent) over flatbed planting. Early onset of flowering (58.3 days) and early maturity (97.5 days) was noticed in shallow depth (5.0 cm) of sowing. Maximum plant height (86.8 cm) was noted under raised bed planting. Maximum leaf area index (LAI) was recorded (4.15) with planting geometry (30 x 30 cm) at 90 DAS. Leaf weight ratio (LWR) and RGR were influenced with all the treatments. Pods per plant, seed yield (g/plant and kg ha-1) were influenced significantly with all the treatments. Raised bed planting proves superior over flatbed in case of seed yield. Square planting with 30 cm planting distance proved better (3,690.9 kg ha-1) than other planting geometries. Seeding at 10 cm depth showed significant improvement in seed yield over other two tested seeding depths.

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