ICAR Research Complex for North Eastern Hilly Region

Dimāpur, India

ICAR Research Complex for North Eastern Hilly Region

Dimāpur, India
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Majumdar B.,ICAR Research Complex for North Eastern Hilly Region | Majumdar B.,Central Research Institute for Jute and Allied Fibres | Venkatesh M.S.,Indian Institute of Pulse Research | Saha R.,Indian Institute of Science
Agrochimica | Year: 2011

Phosphorus adsorption behaviour of five land use systems viz. Livestock based land-use (FSl), Forestry (FS2), Agriculture (FS3), Agri-horti- silvipastoral (FS4) and Natural fallow (FS5) regularly receiving/not receiving fertilizer P and manure was studied after 17 years of their establishment on an acid Alfisol on hilly slopes. The soils of various land-use systems varied widely in their P sorption behaviour with variable P built up in different systems. The P sorption was higher in the soils of natural fallow land-use system and progressively decreased with the application of manures/P + manures in livestock, agri-horti-silvipastoral and agriculture land-use. Phosphate sorption data fitted well to the classical Langmuir adsorption isotherm equation. Different land-use systems had no effect on adsorption maxima (b) while, bonding energy (k), maximum phosphate buffering capacity (MPBC) and standard P requirement (SPR) were highest for natural fallow followed by forestry land use. In contrast, livestock, agri-horti-silvipastoral and agriculture land-use recorded lower values of these P adsorption parameters indicating higher P availability in these systems. The P fractionation before and after equilibrium with added P showed a wide variation in the build up of various forms of P in different land-use systems which reflected in the variable adsorption of P in these land-use systems under study.

Singh B.R.,ICAR Research Complex for North Eastern Hilly Region | Singh R.K.,KVK Inc
International Journal of Probiotics and Prebiotics | Year: 2014

Axone, also known as Aakhone or Akhuni is perhaps the most commonly used fermented soybean product of Nagaland that is relished in the most parts of North Eastern India. Despite its popularity little is known about its health benefits. This study evaluated growth, reproduction and immunomodulation effects of Axone in Swiss albino mice. Incorporation of Axone in regular diet of mice (1% W/W) significantly (p≤0.03) improved weight gain, reduced age of reproduction (sexual maturity) and increased litter size and survival of newborn mice. Axone also enhanced the humoral immune response (p≤ 0.05) against Salmonella enterica ssp. enterica ser Typhimurium. Copyright © 2014 by New Century Health Publishers, LLC.

Kumar R.,ICAR Research Complex for North Eastern Hilly Region | Kumar M.,ICAR Research Complex for North Eastern Hilly Region | Kumar M.,KVK Inc | Deka B.C.,ICAR Research Complex for North Eastern Hilly Region
Research on Crops | Year: 2015

A field experiment was conducted at Agricultural Research Farm of ICAR RC for NEH Region, Nagaland Centre, Jharnapani in two consecutive kharif seasons of 2011 and 2012 to compare the effect of establishment methods and nutrient management practices on production potential, nutrient uptake and energetics in transplanted rice under the hill ecosystem of Nagaland. Results showed that plant height, tillers/m2, dry matter production, root volume and root biomass was recorded significantly higher with system of rice intensification (SRI) followed by integrated crop management (ICM) and conventionally tillage rice (CTR) during both the years. Similarly, the higher number of panicles/hill and panicle length and grain yield were recorded under SRI as compared to ICM and CTR. Among the nutrient management practices, application of 100% RDF+rice straw @5 t/ha was recorded markedly higher growth and yield attributes. Further, application of 100% RDF+rice straw 5 t/ha produced the higher grain yield (4.9 and 4.5 t/ ha) followed by 100% RDN (farm yard manure)+rice straw @5 t/ha (4.7 and 5.4 t/ha), respectively. Among the nutrient management practices, application of 100% RDF+rice straw @5 t/ha fetched the maximum net returns and B : C ratio.

Babu K.D.,ICAR Research Complex for North Eastern Hilly Region | Patel R.K.,ICAR Research Complex for North Eastern Hilly Region | Singh A.,ICAR Research Complex for North Eastern Hilly Region | Yadav D.S.,ICAR Research Complex for North Eastern Hilly Region | And 2 more authors.
Acta Horticulturae | Year: 2010

Papaya (Carica papaya L.) is a popular fruit of tropics and subtropics of the world. India is in the forefront of papaya producing nations. Papaya nursery is normally raised through seeds. There are improved varieties of papaya which are being used for commercial cultivation through out the country. But none of the varieties are commercially grown in the north eastern India due to undulating topography, high rainfall, poor transport, marketing facility etc. Hence, the present study was pursued in papaya with the objective of identifying cultivars suitable to north eastern region of India with better germination percentage, seedling growth and vigour. The experiment was executed at the Horticulture division of ICAR Research Complex for NEH Region, Barapani, Meghalaya during 2001-2002 with fourteen papaya cultivars comprising varieties and hybrids of red and yellow flesh types gathered from across the world. The indigenous collections comprised cultivars from Tamil Nadu Agriculture University, Coimbatore (Co-1, Co-2, Co-3 Co-4, Co-5, Co-6, and Co-7), cultivars from G.B. Pant University of Agriculture and Technology, Pant Nagar (Pant Papaya), Indian Agriculture Research Institute, New Delhi (Pusa Dwarf) and Indian Institute of Horticultural Research, Bangalore (Coorg Honey Dew and Pink Flesh Sweet) whereas Sunrise Solo, Thailand and Washington were the other varieties from foreign sources. The seeds were soaked overnight in different concentrations of gibberellic acid (0, 50, 100, and 150 ppm) and sown in perforated polythene bags containing potting mixture. The cultivars differed significantly with respect to their 1000 seed weight, seed germination, time taken for seed germination, seedling length including seedling vigour. Soaking the seeds with GA3 had a significant effect in improving the germination percentage of papaya cultivars. Increasing the GA3 concentration from 0 to 100 ppm significantly improved the germination (66.17%) over the control (42.40%) and above 100 ppm the seed germination decreased. GA3 treatment had a favorable effect in hastening the germination of papaya and the time taken for germination was maximum in untreated control (31.86 days) whereas GA3 at 100 ppm recorded the minimum period for germination (29.73 days). GA3 treatment had a significant effect in enhancing the seedling length and it was maximum with GA3 100 ppm (17.38 cm) as against control recording only 10.98 cm. It is concluded that the papaya varieties viz., Coorg Honey Dew, Pant Papaya, Co-2 and Co-7 possess better seed germination, seedling growth and vigour are highly suitable for commercial cultivation in north eastern region of India and their germination and seedling health can be improved by treating with GA3 100 ppm.

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