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Nagaland, India

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.

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 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.

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.

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.

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