Nagaland, India
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Kumar R.,Nagaland Center | Deka B.C.,Nagaland Center | Kumar M.,ICAR RC for NEH Region | Ngachan S.V.,ICAR RC for NEH Region
Journal of Plant Nutrition | Year: 2015

A field experiment was conducted during two consecutive years of 2010–2011 and 2011–2012 to study the effect of biofertilizers in conjunction with organic and inorganic sources of nutrient management on productivity, quality and soil health on field pea at ICAR RC for NEH Region, Nagaland Centre Jharnapani, Nagaland, India. The experiment was laid out in split plot design with five nutrient sources in main plots and four treatment of biofertilizers with zinc in sub plots. Results indicated that the application of 100% recommended dose of fertilizer (RDF) through inorganic + 50% recommended dose of nitrogen (RDN) through vermicompost significantly improved root nitrogen (N) content, cation exchange capacity (CEC) of roots, NA activates, seed yield (1153 and 1262 kg ha−1), straw yield (2182 and 2332 kg ha−1) in the year of 2010–2011 and 2011–2012, respectively. Nutrients (N, P, K, S and Zn) uptake by seed and straw, protein content, protein harvest, soil organic carbon (SOC), available N, P, K, S, Zn and economics significantly higher with 100% RDF through inorganic + 50% RDN through vermicompost during both the years. Seed inoculation with biofertilizers along with 5 kg Zn ha−1 markedly enhanced the root N content, CEC of roots, nitrogenase activities (NA), seed yield (1080 and 1193 kg ha−1), straw yield (1978 and 2128 kg ha−1), nutrients [N, phosphorus (P), potassium (K), sulfur (S) and zinc (Zn)] uptake, soil organic carbon (SOC) (%), and available N, P, K, S, and Zn of pea in both the years, respectively. These sources also give more income and benefit cost ratio per rupees invested. © 2015, Copyright © Taylor & Francis Group, LLC.


Kumar S.,Banaras Hindu University | Bohra J.S.,Institute of Agricultural science | Kumar R.,Nagaland Center | Goswami G.,Institute of Agricultural science | Kumawat N.,SRF
Ecology, Environment and Conservation | Year: 2015

A field experiment was conducted during 2011 and 2012 at Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh to evaluate effect of cropping sequences on productivity, energetic and economics on rice-based cropping system. Rice-potato-green gram crop sequence recorded the highest system productivity (52.0 kg ha-1 day1) fallowed by rice-vegetable pea-lady's finger and rice-maize (cob) + vegetable pea (1:2)-cowpea fodder crop sequences. However, the highest energy use efficiency was recorded in rice-maize (green cob) + vegetable pea (1:2)-cowpea fodder (2.98) closely followed by rice wheat (2.80) sequence. Rice-green gram and rice-maize (cob) + vegetable pea (1:2)-cowpea fodder produced 185.7 MJ haa and 169.9 MJ ha1 gross output energy, respectively. With substitution of wheat by mustard in rabi and intensification in summer season with green gram recorded the highest energy productivity (258.6 g MJ-1). Gross return (Rs. 259159), net return (Rs. 150227), B: C ratio (2.38) as well as system profitability (Rs. 412 ha-1 day-1) was recorded maximum in rice-potato-green gram crop sequence followed by rice-vegetable pea-lady's finger crop sequence. © Copyright EM International.


Kumar R.,Banaras Hindu University | Bohra J.S.,Nagaland Center | Kumawat N.,Rajasthan Agricultural University | Kumar A.,Indian Institute of Sugarcane Research | And 2 more authors.
Research on Crops | Year: 2016

A field experiment was conducted at Varanasi during the two consecutive prekharif seasons of 2012 and 2013 to work out the optimum levels of NPKS and Zn application for maximizing the productivity and profitability of baby corn under irrigated ecosystem. Results revealed that root parameters, yield and economics of baby corn were influenced significantly by varying the fertility levels. Significantly highest baby cob (9.55 t/ha), baby corn (2.15 t/ha), green fodder yield (31.51 t/ha), gross returns (202.61 × 103 Rs./ha) and net returns (143.40 ×103Rs./ha) were recorded with the application of 125% RDF. Further, application of 50 kg S/ha resulted in significantly higher baby cob (9.38 t/ha), baby corn (2.15 t/ha), green fodder yield (30.97 t/ha), net profit (142.07 × 103 Rs./ha) over control but it remained at par with application of 25 kg S/ha. Similarly, application of 10 kg Zn/ha gave the maximum baby cob (9.24 t/ha), baby corn (2.10 t/ha) and green fodder yield (30.49 t/ha) with a net profit (138.81×103 Rs./ha) over control but it remained at par with application of 25 kg S/ha.Hence, the application of 125% RDF and 50 kg S/ha along with 10 kg Zn/ha was found optimum to obtain the maximum productivity and profitability of baby corn under irrigated conditions of Varanasi.


Singh B.K.,ICAR Research Complex for North Eastern Hill Region ICAR RC NEH Region | Singh B.K.,Indian Institute of Vegetable Research | Deka B.C.,Nagaland Center | Ramakrishna Y.,ICAR Research Complex for North Eastern Hill Region ICAR RC NEH Region
Proceedings of the National Academy of Sciences India Section B - Biological Sciences | Year: 2014

French bean (Phaseolus vulgaris L.), especially pole-type, is one of the most widely cultivated and popular vegetables in Mizoram due to its wide adaptability, round the year availability and better tender pod quality (slender, fleshy, soft with fewer parchment strings). However, there is little information on genetic variability, heritability and interrelationships of economic traits in pole-type French bean. Therefore, sixty-five genotypes (Indian and exotic collections) were evaluated. A significant genotypic mean square for the traits studied indicated sufficient variation among genotypes. Ten genotypes showed better pod yield potential (>13.5 t/ha) which were collected from Mizoram (IC593590, IC593591, IC593594, MZFB-48, IC595238, MZFB-32, IC593593, MZFB-29, MZFB-51 and MZFB-47). Vine length, inter-nodal length, number of nodules/plant, nodule fresh weight, tender pod fresh weight, 100 seeds weight and pod yield showed additive gene action, i.e., high heritability (>80 %) and high genetic advance (>40 %) which could be improved by selection and hybridization. While non-additive genes were responsible for days to 50 % maturity (earliness) that could be exploited through heterosis breeding. However, both additive and non-additive genes are accountable for pod length, number of seeds/pod and number of pods/plant and could be improved through reciprocal recurrent selection. Pod weight and number of pods/plant could be reliable tools for selection indices to identify the productive genotypes and to realize maximum genetic gain. Viewing the genetic potential, it is convincing to include genotypes from Mizoram regions in the genetic enhancement as well as varietal improvement of French bean for tender pod yield. © 2014 The National Academy of Sciences, India.


Perumal M.,Indian Institute of Technology Roorkee | Moramarco T.,National Research Council Italy | Sahoo B.,Indian Institute of Technology Roorkee | Sahoo B.,Nagaland Center | Barbetta S.,Indian Institute of Technology Roorkee
Water Resources Research | Year: 2010

This paper presents a novel approach for enhancing the accuracy of the variable parameter Muskingum stage hydrograph routing method proposed by Perumal et al. (2007) for rating curve development at ungauged river sites having irregular cross sections. The approach has been well tested for the reproduction of stage and discharge hydrographs and for rating curve development at an ungauged section of the Tiber River in central Italy considering two different natural channel reaches. Copyright 2010 by the American Geophysical Union.


Kumar R.,Banaras Hindu University | Kumar R.,Nagaland Center | Bohra J.S.,Banaras Hindu University | Kumawat N.,Banaras Hindu University | And 2 more authors.
Research on Crops | Year: 2015

A field experiment was conducted during the two consecutive pre-kharif seasons of 2012 and 2013 at Varanasi to study the effect of NPKS and Zn application on fodder yield, nutrient uptake and quality of baby corn (Zea mays L.). Results revealed that cob, corn and green and dry fodder yield, net profit, nutrient content (NPKSZn) and their uptake were recorded significantly higher with application of 125% RDF. Further, application of 50 kg S/ha resulted in significant increase in cob, corn, green fodder yield, net profit and nutrient content and uptake of baby corn over control but it remained at par with 25 kg S/ha. Similar trend was also observed with application of Zn levels. Increasing levels of sulphur and zinc progressively improved the fodder quality of baby corn viz., crude protein, ash, calcium content except crude fibre content which followed reverse trend. Hence, application of 125% RDF along with 50 kg S/ha and 10 kg Zn/ha was found optimum to obtain the higher green and dry fodder yield, net profit and quality of baby corn under irrigated condition of Varanasi.


Kumar R.,Nagaland Center | Deka B.C.,Nagaland Center | Ngachan S.V.,Nagaland Center
Legume Research | Year: 2015

A field experiment was carried out at Agricultural Research Farm of ICAR RC for NEH Region, Jharnapani in summer seasons of 2010 and 2011 to assess the effect of sowing time, seed rates and integrated nutrition on yield attributes, yield, nutrient uptake, quality and soil health of mungbean. Results revealed that yield attributes, yield, N, P and K uptake of mungbean was recorded significantly higher in 5th April than April 15th sown crop. However, yield attributes, yield, N, P and K uptake of mungbean was noted markedly higher with seed rate of 35 kg/ha, which was significantly superior to 20, 25 and 30 kg/ha. Similarly, application of 50% RDF+50% RDN+PSB produced significantly higher yield attributes, yield, N, P, K uptake by mungbean. © 2015, Agricultural Research Communication Centre. All Rights Reserved.


Results on the effect of various levels of NPKS on toria varieties (Brassica rapa var. toria) revealed that the growth attributes (plant height, branches/plant, dry matter/plant) and yield attributes (siliquae/plant, seeds/silique, length of silique and 1000-seed weight), seed, stover and biological yield increased with increasing the levels of NPKS application. Application of 150% RDF, which was at par with 125% RDF but showed significantly superior to 100% RDF and the control. Similarly, the higher economics, nutrient content (NPKS) and uptake, oil, protein content of seed and their yield were also increased with increasing levels of fertilizers (NPKS) up to 150% RDF. Amongst the three toria varieties, TS-38 and TS-36 had significantly higher growth and yield over M-27. Similarly, the economics, nutrient content and their uptake, oil, protein content and their yield were also significantly higher in TS-38 followed by TS-36.


Kumari A.,Banaras Hindu University | Singh O.N.,Banaras Hindu University | Kumar R.,Banaras Hindu University | Kumar R.,Nagaland Center
Indian Journal of Agricultural Sciences | Year: 2014

A field experiment was conducted during the two consecutive rabi seasons of 2007-08 and 2008-09 at Varanasi on sandy loam soil to study the effect of organic, inorganic and biofertilizers on dwarf pea (Pisum sativum L.). The experiment was conducted in a split-plot design and replicated thrice. All the fertility levels, viz. chemical fertilizers, vermicompost and control were allotted to main plot and combinations of biofertilizers (Rizobium+Bacillus polymixa +Pseudomonas fluorescence) and Zn along with control were subjected to sub-plot. Results showed superimposition of 50% Norganic (recommended dose of N through vermicompost) to 100% NPK (recommended dose of NPK through chemical fertilizers) resulted in significant improvement of dry matter/plant, yield (grain and straw, harvest index), root growth (root dry weight, root N content and cation exchange capacity of root) and nutrient uptake (NPKS and Zn). However nodulation (root nodules/plant, dry weight of nodules/plant and nitrogenase activity at 30 and 60 DAS) was lesser with this fertility level but significantly higher than 100% NPK and control (no application).Gross and net returns (R 45 358 and 31 223/ha) were noted higher with 100% NPK + 50% Norganic fertility level. Benefit: cost ratio (2.21) was also recorded higher with 100% NPK + 50% Norganic level. The integrated application of biofertilizers and Zn was recorded significantly better than control as this treatment lucidly improved dry matter, yield, harvest index, root growth, nodulation and nutrient uptake. Benefit: cost ratio was also higher with combined application of PSB and Zn. Furthermore, integration of 100% NPK + 50% Norganic and biofertilizers + Zn was conducive for getting significantly optimum yield (1873 kg/ha).

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