Refine your search
Co-Authors
Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Singh, Y. P.
- Status of Dwarf Mistletoe (Arceuthobium minutissimum Hook. f.) on Blue Pine in Jammu & Kashmir
Abstract Views :276 |
PDF Views:0
Authors
Source
Indian Forester, Vol 133, No 9 (2007), Pagination: 1179-1184Abstract
Blue pine (Pinus wallichiana A.B. Jackson) which occurs naturally in the temperate zone of Central and Western Himalayas, is attacked by dwarf mistletoe. It is a disease of low rainfall area and known only from Western Himalayas in Pakistan, Jammu & Kashmir in India and Nepal. A survey was conducted in 2005-2006 in different forest divisions of Kashmir Valley and Jammu. Symptoms and disease intensity were recorded in different girth classes of Blue pine. In young plants, spindle shaped swellings in the infected branches was the most prominent symptom. Mature tree showed deformity of branches and poor crown. There was a linear relationship between increasing girth and disease intensity, for example, only 48 per cent infection was recorded in < 30 cm girth class, while 100 per cent trees were infected in 111-200 cm girth class and above.- Heteroporus Root-rot of Paulownia fortunei
Abstract Views :268 |
PDF Views:0
Authors
Source
Indian Forester, Vol 127, No 9 (2001), Pagination: 1043-1046Abstract
White spongy ischolar_main-rot of Paulownia fortunei was observed in plantations raised at New Forest trial plantation and Doiwala Social Forestry plantation, Dehra Dun. Affected trees showed die-back symptom besides white cottony mycelium on bark of diseased ischolar_mains. The causal organism was identified as Heteroporus biennis (Bull. ex Fries) Bull. Pathogenicity test established the relationship of the ischolar_main-rot fungus with the disease. Field assessment of the ischolar_main-rot was also carried out in the plantation at New Forest, Forest Research Institute, Dehra Dun.- Centratherum anthelminticum : a New Host of Root-knot Nematode
Abstract Views :492 |
PDF Views:0
Authors
Source
Indian Forester, Vol 126, No 9 (2000), Pagination: 1015-1016Abstract
No abstract- Fungal Diversity in Himalayas : a Case Study for Conservation
Abstract Views :239 |
PDF Views:0
Authors
Source
Indian Forester, Vol 125, No 2 (1999), Pagination: 149-158Abstract
To study the mycological wealth of Kumaun Himalayas, extensive surveys were conducted. The common edible, poisonous, ectomycorrhizal, fungicolous, rare, wood-decaying fungi and their commercial uses are discussed. In-situ and Ex-situ conservation of fungi for fungal diversity has also been suggested.- Endomycorrhizal Associations of Acacias in Nurseries and Plantations of Indian Arid Zone
Abstract Views :220 |
PDF Views:0
Authors
Source
Indian Forester, Vol 123, No 4 (1997), Pagination: 323-330Abstract
Most woody plants depend on mycorrhizal fungi for their survival. Among the different mycorrhizal fungi, Vesicular-Arbuscular Mycorrhizal (VAM) fungi are widely distributed in varied ecosystems including arid and semi-arid deserts and associated with many plant species. An intensive survey was conducted to study the status of VAM fungal associations in Acacia spp. viz., A.nilotica sub species indica and A.tortilis sub species raddiana of various forest nurseries and plantations in arid zone of Rajasthan. The extent of VAM colonization in ischolar_mains and spore populations in rhizosphere soils were quantified. Variation in per cent ischolar_main colonization and number of VAM propagules in the rhizoshpere of both nursery and plantation samples was observed. Also, mean number of VAM propagules and per cent ischolar_main colonization were greater in plantation samples than in nursery samples. Spores from the rhizosphere soils were isolated and tentatively identified as different species of Glomus, Gigaspora and Sclerocystis genera of endomycorrhizal fungi. Among these genera, Glomus is dominant in the rhizosphere of both the tree species screened. The most predominant VAM fungi were multiplied for future nursery inoculations.- In-vitro Conservation of Forest Genetic Resources
Abstract Views :326 |
PDF Views:0
Authors
Source
Indian Forester, Vol 122, No 4 (1996), Pagination: 306-315Abstract
Past fifty years have witnessed the development and refinement of storage conditions for seeds and other plant parts as a measure of forest tree germplasm conservation. During the last two decades the quest for genetic resource conservation has reached to such a level that existing methodologies require development of an innovative and reliable technology package for the genetic resource preservation. Techniques of in-vitro conservation hold enormous potential, however, extensive and systematic efforts to refine them into technology are needed. To date the research had mainly confined to the temperate species. Tropical forest genetic wealth which is under serious threat of depletion/extinction needs special attention for the development of in-vitro conservation strategies. The paper briefly discuss the recent approaches like in-vitro and cryopreservation technology for genetic conservation ofvaluahle plant resources and highlighted their important role in forest trees.- Distribution of VAM Fungi in Nurseries and Plantations of Neem (Azadirachta indica) in Arid Zone of Rajasthan
Abstract Views :192 |
PDF Views:0
Authors
Source
Indian Forester, Vol 121, No 11 (1995), Pagination: 1069-1076Abstract
Occurrence of VAM fungi is ubiquitous and are found in most ecosystems including arid- and semi-arid deserts. A survey for collection of ischolar_mains and rhizosphere soil samples of neem from various Forest Department nurseries and plantations in arid zone of Rajasthan revealed variation in per cent ischolar_main infection and number of VAM propagules in the rhizosphere soil samples. It has been observed that mean number of VAM fungal propagules and per cent ischolar_main infection were greater in plantation samples than in nursery samples. Different VAM fungi have been isolated, of which the genus Glomus is dominant with an exception of Sclerocystis in plantations. Among the Glomus spp., G. fasciculatum is the most predominant one in both nursery and plantation. The significance of these findings is discussed.- Evaluation of some Bioagents against Mustard Aphid (Lipaphis erysimi (Kaltenbach)) (Hemiptera: Aphididae) on Single Plant in Field Condition
Abstract Views :207 |
PDF Views:124
Authors
Affiliations
1 National Research Center on Rapeseed-Mustard, Sewar, Bharatpur 321303, Rajasthan, IN
2 Gujarat Beej Company, Khanderao Market, Sidhnath Road, Baroda 390 001, Gujarat, IN
1 National Research Center on Rapeseed-Mustard, Sewar, Bharatpur 321303, Rajasthan, IN
2 Gujarat Beej Company, Khanderao Market, Sidhnath Road, Baroda 390 001, Gujarat, IN
Source
Journal of Biological Control, Vol 23, No 1 (2009), Pagination: 95-97Abstract
Four bioagents, viz., Coccinella septempunctata L., Menochilus sexmaculatus (F.), Chrysoperla carnea (Stephens) and Verticillium lecanii (Zimmerman), were evaluated against mustard aphid, Lipaphis erysimi (Kaltenbach), on single plants covered with muslin cloth in the field at National Research Centre on Rapeseed-Mustard, Sewar, Bharatpur (Rajasthan) during 2005-06 and 2006-07. C. septempunctata @ two adults/plant was found to be the most effective, reducing 96.19% of the aphid population in 10 days followed by C. septempunctata @ two larvae per plant (93.42%), V. lecanii @ 108 spores-ml (84.90%), M. sexmaculatus @ two adults (84.62%) and C. carnea @ four larvae-plant (82.98%). C. septempunctata @ one adult per plant reduced the aphid population by 77.49% and M. sexmaculatus by 69.08%.Keywords
Chrysoperla carnea, Coccinella septempunctata, Lipaphis erysimi, Menochilus sexmaculatus, Mustard Aphid, Verticillium lecanii.References
- Behera, M. K., Behera, R. and Patro, B. 1999. Biology and feeding potential of Coccinella septempunctata Linnaeus (Coleoptera: Coccinellidae) on the chrysanthemum aphid, Macrosiphoniella sanborni (Gillette). Journal of Biological Control, 13: 39-43.
- Honek, A. 1985. Activity and predation of Coccinella septempunctata adult in the field. Zeitschrift fur angewandte Entomologie, 100: 399-409.
- Purwar, J. P. and Sachan, G. C. 2004. Bioefficacy of entomopathogenic fungi against mustard aphid, Lipaphis erysimi (Kalt.) on Brassica campestris. Journal of Aphidology, 18: 5-10.
- Sharma, D. K., Varma, G. C. and Kishore, L. 1997. Feeding capacity of predators of mustard aphid,Lipaphis erysimi Kalt. Journal of Aphidology, 11: 171-174.
- Singh, D. and Singh, H. 1993. Biology of ladybird beetle, Coccinella septempunctata Linn. Annals of Biology, 9: 250-253.
- Singh, N. N., Latif, H. and Pandey, R. 2003. Preying capacity of Chrysoperla carnea (Steph.) on mustard aphid, Lipaphis erysimi Kalt. Journal of Applied Zoological Research, 14: 57-58.
- Evaluation of Bioagents against Mustard Aphid, Lipaphis erysimi (Kaltenbach) (Homoptera: Aphididae), under Net Covered Condition in Field
Abstract Views :231 |
PDF Views:157
Authors
Affiliations
1 National Research Centre on Rapeseed-Mustard, Sewar, Bharatpur, 321 303, Rajasthan, IN
1 National Research Centre on Rapeseed-Mustard, Sewar, Bharatpur, 321 303, Rajasthan, IN
Source
Journal of Biological Control, Vol 22, No 2 (2008), Pagination: 321-326Abstract
Three bio-agents viz., Coccinella septempunctata (Linnaeus), Chrysoperla carnea (Stephens) and Verticillium lecanii (Zimmerman) were evaluated against mustard aphid Lipaphis erysimi (Kaltenbach) under net covered condition in the field at National Research Centre on Rapeseed-Mustard, Sewar, Bharatpur (Rajasthan), during 2005-06 and 2006-07. C. septempunctata @ 5,000 beetles/ha was found to be most effective by reducing 88.17 percent aphid population after 10 days of release, followed by V. lecanii @ 108 spores/ml (75.79 percent) and C. septempuactata @ 3,000 beetles/ha (65.46 percent), Maximum yield was recorded with the release of C. septempunctata @ 5,000 beetles/ha followed by V. lecanii @ 108 spores/ml and C. septempunctata @ 3,000 beetles/ha.Keywords
Cocciuella septempunctata, Chrysoperla carnea, Verticillium lecanii, Lipaphis erysimi, Mustard Aphid, Brassica Juncea, Mustard.- Numerical Simulation of the Internal Vibrations of NH2 in Amino-Benzoic Acids
Abstract Views :173 |
PDF Views:2
Authors
Affiliations
1 Department of Physics, Govt. Women’s Polytechnic College, Sagar (M.P.), IN
2 Department of Physics, S.V. Polytechnic College, Bhopal (M.P.), IN
1 Department of Physics, Govt. Women’s Polytechnic College, Sagar (M.P.), IN
2 Department of Physics, S.V. Polytechnic College, Bhopal (M.P.), IN
Source
The Asian Journal of Experimental Chemistry, Vol 4, No 1-2 (2009), Pagination: 10-13Abstract
Our present work reports the IR spectra of amino substituted Benzoic Acids recorded by FTIR spectrometer and also simulated theoretically. The simulation was performed using GF matrix and AM1, PM3, DFT method. In this work following steps were taken: optimizing the geometry, computing the IR spectra and comparing it with experimental spectra. Assuming Cs point symmetry, vibrational assignments for the observed frequencies have been proposed. The spectra exhibit distinct features originating from low frequency vibrational modes caused by intra-molecular motion.Keywords
O-Amino Benzoic Acid, M-Amino Benzoic Acid, P-Amino Benzoic Acid, FTIR Spectra, Vibrational Spectra, AM1, PM3, DFT, G-F Matrix.- Comparative Study on Platinum Vs. Palladium (PT/PD) Thermocouple Using Spherical Blackbody Furnace
Abstract Views :157 |
PDF Views:0
Authors
Affiliations
1 Temperature and Humidity Standards, National Physical Laboratory, Dr K.S Krishnan Marg, New Delhi-110012, IN
1 Temperature and Humidity Standards, National Physical Laboratory, Dr K.S Krishnan Marg, New Delhi-110012, IN
Source
Manufacturing Technology Today, Vol 11, No 7 (2012), Pagination: 10-14Abstract
Thermocouple is one of the most important and widely used temperature sensors in the research and industrial applications. Pt/Pd thermocouple is now a days becoming attraction of researchers to find its applications as a high temperature sensor. Investigation has been made, using tungsten strip lamp, a primary standard of non-contact thermometry, whose temperature correspondence was measured in terms of photoelectric current with the help of photoelectric linear pyrometer Photoelectric pyrometer has been used as a transfer standard for conferring the temperature of spherical blackbody furnace, which was used to measure the temperature of both Pt/Pd and type-S thermocouples in terms of their electromotive force by contact thermometry. Experimental results have shown the utmost linearity among two techniques used and also the advance characteristics of Pt/Pd thermocouple over type-S thermocouple in a high temperature range from 800 °C to 1300 °C. The uncertainty in the comparison from various sources was found to be within ±1.4 °C.Keywords
Pt/Pd Thermocouple, Type-S Thermocouple, Pyrometer Blackbody Source, Tungsten Strip Lamp.- Inter-Comparison of Blackbody Sources Using IR-Radiation Pyrometer in the Temperature Range from 50 °C to 500 °C
Abstract Views :152 |
PDF Views:0
Authors
Affiliations
1 Temperature and Humidity Standards, National Physical Laboratory, Dr. K. S Krishnan Marg, New Delhi-110012, IN
1 Temperature and Humidity Standards, National Physical Laboratory, Dr. K. S Krishnan Marg, New Delhi-110012, IN
Source
Manufacturing Technology Today, Vol 11, No 7 (2012), Pagination: 15-18Abstract
In the present study a comparison between two different thermal sources maintaining near blackbody conditions has been carried out in the range from 50 °C to 500 °C. An infrared radiation pyrometer of make Land Pyrometer, Japan was used as a transfer standard to measure the temperature of blackbodies. The expanded uncertainty in the estimation of temperature of the radiating source in the above range of measurement was evaluated to be within ±1.03 °C, which shows that the radiation temperature sources are suitable for calibration of infrared total radiation pyrometers and thermal imaging devices in the operational range from 50 °C to 500 °C for laboratory and other industrial applications.Keywords
IR-Radiation Pyrometer, Thermocouple, Blackbody Source & Emissivity.- Some Foraminiferal Taxa in the Middle to Late Jurassic Sediments of Kaiya Dome, Kutch
Abstract Views :182 |
PDF Views:0
Authors
Affiliations
1 Department of Geology, Aligarh Muslim University, Aligarh - 202 002, IN
2 K-69, Gyansarover, Aligarh - 202 002, IN
3 Department of Geology, Dharam Samaj College, Aligarh - 202 001, IN
4 Paleontology Lab, KDMIPE, ONGC Ltd., 9, Kaulagarh Road, Dehradun - 248 195, IN
1 Department of Geology, Aligarh Muslim University, Aligarh - 202 002, IN
2 K-69, Gyansarover, Aligarh - 202 002, IN
3 Department of Geology, Dharam Samaj College, Aligarh - 202 001, IN
4 Paleontology Lab, KDMIPE, ONGC Ltd., 9, Kaulagarh Road, Dehradun - 248 195, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 79, No 2 (2012), Pagination: 161-168Abstract
The Chari Formation exposed at Kaiya Dome, Kutch yielded a foraminiferal assemblage comprising 41 species dominated by the family Vaginulinidae. A systematic account of 11 species, reported for the first time form the Indian subcontinent, is presented. The foraminiferal assemblage is employed for preliminary interpretations regarding age, palaeoecology, and palaeobiogeography. The assemblage suggests a Callovian to Oxfordian age for the exposed sequence at Kaiya Dome. A near shore, open marine environment ranging from mid to outer shelf with fluctuating strandline is interpreted on the basis of the recovered foraminiferal assemblage. The Kaiya Dome foraminiferal assemblage exhibits a Tethyan affinity and suggests that the Kutch region, along with neighbouring regions, was engulfed by a shallow southwestern arm of Tethys during Middle to Late Jurassic times.Keywords
Jurassic Foraminifera, First Report, Systematics, Age, Palaeoecology, Palaeobiogeography, Kutch.References
- BARTENSTEIN, H. and BRAND, E. (1951) Mikropaläontologische Untersuchungen zur Stratigraphie des nordwestdeutschen Valendis. Senckenb. Naturf. Ges., Abh., Frankfurt on Main, n.485, pp.239-336.
- BHALLA, S.N. and ABBAS, S.M. (1976) The age and paleogeographical significance of Jurassic Foraminifera from Kutch: In: 1st Int. Symp. on Benthonic Foraminifera of Continental Margins, Canada. Maritime Sediments, Spec. Publ., no.1, Pt.B, pp.537-544.
- BHALLA, S.N. and ABBAS, S.M. (1978) Jurassic foraminifera from Kutch, India. Micropaleontology, v.24(2), pp.160-209.
- BHALLA, S.N. and TALIB, A. (1991) Callovian-Oxfordian foraminifera from Jhurio hill, Kutch, Western India. Rev. de Palèobiol., Genéve, v.10(1), pp.85-114.
- FÜRSICH, F.T., OSCHMANN, W., JAITLY, A.K. and SINGH, I.B. (1991) Faunal response to transgressive-regressive cycles: examples from the Jurassic of western India. Palaeogeog., Palaeoclimat., Palaeoeco., v.85, pp.149-159.
- GAUR, K.N. and TALIB, A. (2009) Middle-Upper Jurassic foraminifera from Jumara Hills, Kutch, India. Rev. de Micropal., v.52, pp.227-248.
- GORDON, W.A. (1965) Foraminifera from the Corallian Beds, Upper Jurassic of Dorset, England. Jour. Pal., v.39(5), pp. 828-863.
- HERRERO, C., COPESTAKE, P. and JOHNSON, B. (1996) Saracenella mochrasensis sp. nov. (Foraminiferida), a regional biostratigraphic marker species for Upper Toarcian (Jurassic) of Europe. Jour. Form. Res., v.26, n.3, pp.187-192.
- KALANTARI, A. (1969) Foraminifera from the Middle Jurassic-Cretaceous successions of Koppet-Dagh Region (N.E. Iran). Nat. Iranian Oil Co., Geol. Lab. Publ., n.3, pp.1-298.
- KALIA, P. and CHOWDHURY, S. (1983) Foraminiferal biostratigraphy, biogeography, and environment of Callovian sequence, Rajasthan, northwestern India. Micropaleontology, v.29(3), pp.223-253.
- KHOSLA, S.C., JAKHAR, S.R. and MOHAMMED, M.H. (1997) Ostracodes from the Jurassic rocks of Habo hill, Kachchh, Gujarat. Micropaleontology, v.43(1), pp.1-39.
- KHOSLA, S.C., JAKHAR, S.R. and MOHAMMED, M.H. (2004) Ostracodes from the Jurassic beds of Jhura hill, Kachchh, Gujarat. Jour. Geol. Soc. India, v.63, pp.15-28.
- KHOSLA, S.C., KUMARI, M., FLEX, A.D., JAKHAR, S.R. and NAGORI, M.L. (2005) Middle Jurassic ostracodes from the northern Island belt, Rann of Kachchh, Gujarat, India. Jour. Palaeont. Soc. India, v.50(1), pp.17-64.
- KRISHNA, J. (1983) Callovian-Albian ammonoid stratigraphy and palaeobiogeography in the Indian subcontinent with special reference to the Tethys Himalaya. Himalayan Geol., v.11, pp.43-72.
- LOEBLICH, A.R. JR. and TAPPAN, HELEN (1952) The foraminiferal genus Triplasia Reuss, 1854. Smithson. Inst., Misc. Coll., Washington, D.C., v.117(15), Publ.4094, pp.1-61.
- LOEBLICH, A.R. JR. and TAPPAN, HELEN (1988) Foraminiferal genera and their classification. Van Nostrand Reinhold Company, New York, 970 p.
- PANDEY, J. and DAVE, A. (1993) Studies in Mesozoic foraminifera and chronostratigraphy of Western Kutch, Gujarat. Paleontographica Indica, no.1, pp.1-221.
- REOLID, M., RODRIGUEZ-TOVAR, F.J., NAGY, J. and OLÓRIZ, F. (2008) Benthic foraminiferal morphogroups of mid to outer shelf environments of the Late Jurassic (Prebetic Zone, southern Spain): Characterization of biofacies and environmental significance. Palaeogeog., Palaeoclimat., Palaeoeco., v.261, pp.280-299.
- SAID, R. and BARAKAT, M.G. (1958) Jurassic microfossils from Gebel Maghara, Sinai, Egypt. Micropaleontology, v.4(3), pp.231-272.
- TALIB, A. and GAUR, K.N. (2008) Foraminiferal composition and age of the Chari Formation, Jumara Dome, Kutch. Curr. Sci., v.95(3), pp.367-373.
- TALIB, A., GAUR, K.N. and BHALLA, S.N. (2007) CallovianOxfordian boundary in Kutch Mainland, India-A foraminiferal approach. Rev. de Palèobiol., Genéve, v.26(2), pp.625-630.
- VANDERPOOL, H.C. (1933) Upper Trinity microfossils from southern Oklahoma. Jour. Paleont., v.7, pp.406-411.
- WAAGEN, W. (1875) Jurassic geology of Cutch . Pal. Ind., Geol. Surv. India, Ser.9, v.1.
- WILLIAMSON, A.M. and STAM, B. (1988) Jurassic/Cretaceous Epistomonidae from Canada and Europe. Micropleontology, v.4, no.2, pp.136-158.