Academia
PhD Microbiologist/Senior Scientist
Master of Science
American Board of Industrial Hygiene (ABIH)
(CIH) Certified Industrial Hygienist
American Council for Accredited Certification (ACAC)
(CIEC) Council-certified Indoor Environmental Consultant
(CEICC) Council-certified Environmental Infection Control Consultant
(CFSC) Council-certified Fire and Smoke Damage Consultant
State of California Department of Industrial Relations, Division of Occupational Safety and Health (DOSH)
(CAC) Certified Asbestos Consultant
(CSST) Asbestos Site Surveillance Technician
California Department of Public Health (CDPH)
Lead Sampling Technician
Lead Inspector/Assessor
Lead Project Monitor
United States Department of Labor – Occupational Safety & Health Administration (OSHA)
(HAZWOPER) Hazardous Waste Operations and Emergency Response
(FRO) First Responder Operations
Institute of Inspection, Cleaning and Restoration Certification (IICRC)
(AMRT) Applied Microbial Remediation
(ASD) Applied Structural Drying Technician
(WRT) Water Damage Restoration Technician
State of California Department of Toxic Substances Control (DTSC) – Program discontinued in 2012.
(REA) State of California Registered Environmental Assessor - Meets the EPA definition of Environmental Professional (EP)
National Registry of Environmental Professionals (NREP)
(REPA) Registered Environmental Property Assessor
Techniques Developed
Developed various techniques for growing, isolating, and mass-producing beneficial microorganisms (biotechnological products).
Awards
Natural Sciences and Engineering Research Council (NSERC) Fellowship, Canada (1985-1987).
Lars Hiestas Minne Foundation Fellowship, Sweden (1984-85).
Broderna Edlund Foundation Fellowship, Sweden (1984-85)
Research/Discoveries
- Described and named a new species of a fungus, Phoma etheridgei.
- Author of an International Patent on antifungal compounds/mycotoxins.
- Described and named new mycotoxins / antifungal compounds from following fungal species:
- Stachybotrys cylindrospora : Trichodermin and Trichodermol.
- Hebeloma longicaudum : Fused caryophyllenes and 6, 7-seco caryophyllenes.
- Phellinus pini: 2, 4. 6 - triphenylhex - 1 - ene, 2 - farnesyl - 5 - methylbenzoquinone, 8-methyl-13-phenyltri-deca-4,6,8,1012-pentaene-3- one, 4-vinlyphenol, and vinlyresoricinol.
- Peniophora polygonia: Peniopholide, 3-alpha-hydroxypheniopholide, and 3-beta-hydroxypheniopholide.
- Urnula craterium: Pestalotin, (1' S) - 5, 6 - dehidropestalotin, (4S)-3,4- dihydro-4-8-dihydroxynaphthalenones, 4-methoxy-3,6-dimethylpyran-2- one, Isosclerone, and (2S, 4S)-3,4-dihydro-2,4,8-trihydroxy-1(2H)- naphthalenone.
International Conferences/Symposium
Attended or presented by invitation at over 50 International Conferences/Symposium
Appointments/Board Positions/Committees/Standards
Institute of Inspection, Cleaning and Restoration Certification (IICRC), Member of the Standards Committee. The Standards Committee (SC) is responsible for developing and maintaining IICRC standards. It consists of the Standards Chair and Vice-Chair, along with the Chairs and Vice Chairs of each of the Standards Consensus Body.
Institute of Inspection, Cleaning and Restoration Certification (IICRC), Chairman of the IICRC Brand and Image Use Policy Task Force.
Institute of Inspection, Cleaning and Restoration Certification (IICRC) Chairman of Consensus Body - BSR/IICRC S760 Standard for Professional Restoration of Structures and Items Damaged by Wildfire Smoke.
Institute of Inspection, Cleaning and Restoration Certification (IICRC), Member/Advisor to the IICRC Continuing Education Policy Task Force.
Institute of Inspection, Cleaning and Restoration Certification (IICRC) Voting member of Consensus Body -BSR/IICRC S700 Standard for Professional Fire and Smoke Damage Restoration.
Institute of Inspection, Cleaning and Restoration Certification (IICRC) Voting member of Consensus Body -ANSI/IICRC S520 Standard for Professional Mold Remediation.
ACAC CIEC Certification Board (2011 – 2013), American Council for Accredited Certification. Accredited by the Council for Engineering and Scientific Specialty Boards (CESSB) and the National Commission for Certifying Agencies (NCCA).
IESO/RIA Fire Damage Standard 6000 (FS-1) Member of the Consensus Body and primary author. Analysis and characterization of combustion byproducts impacting structure and contents.
ASHRAE/Indoor Air Quality Association (IAQA) Education Committee, Member (2012 -2017). Responsible for all educational courses and webinars. The committee reviews all course curricula to ensure that the quality of the training and educational materials meets the expectations of members. All application and renewal documents are analyzed by the committee to determine the credentials and capabilities of the training providers. Additionally, the committee evaluates educational requirements embodied in new legislation and comments on its findings through the IAQA Government Affairs Committee.
Indoor Air Quality Association (IAQA) Think Tank Committee, Chairman (2014-2015). Develop and foster strategic alliances, MOU’s and partnerships through IAQA education and training programs.
Indoor Air Quality Association/ASHRAE International and Association Relations Committee, Member (2014-2015).
American Industrial Hygiene Association (AIHA) IAQ and Environmental Issues Committee - Wildfire Project Team. Sampling, Analytical and Data Interpretation for Wildfire (SADI) Sub-committee Chairman.
ASTM International, D22 – Air Quality Committee Member, D22.08 Sampling and Analysis of Mold – Sub Committee Member.
Indoor Environmental Standards Organization (IESO) Standards Development Committee & Consensus Body (2013). Review proposals for indoor environmental standards within the scope of IESO. Create and approve standards to be submitted to the American National Standards Institute (ANSI).
American Council for Accredited Certification (ACAC), Council-certified Fire and Smoke Damage Consultant Steering Committee, Chairman. Responsible for the creation and development of the industry’s first Fire and Smoke Damage Investigator credential with accreditation by the Council for Engineering and Scientific Specialty Boards (CESSB).
American Council for Accredited Certification (ACAC), Council-certified Fire and Smoke Damage Consultant Study Review Guide Committee, Chairman. Principle drafter of the 62-page Study review and exam preparation guide. As committee Chairman, I was responsible for overseeing any changes/additions to the study review/Exam preparation guide and build consensus among committee members to approve final draft.
Journal for the Association of Interdisciplinary Doctors of Health Sciences (AIDHS). Indoor air quality peer-review for submitted manuscripts.
Journal for Cleaning, Restoration and Inspection published by the Institute for Inspection, Cleaning and Restoration Certification (IICRC). Technical and subject matter peer-review for submitted manuscripts.
Published Journal Articles/Technical Case Studies
P. Chakravarty and B. Kovar, 2013, Evaluation of five antifungal agents used in
remediation practices against six common indoor fungal species. Published in the Journal of Occupational and Environmental Hygiene 10: D11-D16.
B. Kovar, November 2014, Preventing Indoor Air Quality Hazards during the Holidays, The Interdisciplinarian, Newsmagazine of the Association of Interdisciplinary Doctors of Health Science, Volume 1 - Issue 1, November 2014
Martin L. King and Brad Kovar, 2013, Distribution of Combustion Particles in Buildings. Journal of Cleaning, Restoration & Inspection. A peer reviewed publication of the Institute of Inspection, Cleaning and Restoration Certification (IICRC). December 2014 and Journal of Wood Design Focus. A quarterly publication of the Institute of Forest Products Society (FPS). Summer 2015 edition.
Shufutinsky, A., Kovar, B., Fordyce, L., Shufutinsky, B., Pernsteiner, E., & Johnson, D. (2014). Toward Effective Public Health Emergency Risk Communication: Modification of the Social Cubism Conflict Analysis Model for Assessing Risk Communications to Vulnerable Populations. International Journal of Interdisciplinary and Multidisciplinary Studies, 2(2), 177-189. December 2014.
Martin L. King and Brad Kovar, 2013, Evaluating Smoke Odor Damage. Journal of Cleaning, Restoration & Inspection. A peer reviewed publication of the Institute of Inspection, Cleaning and Restoration Certification (IICRC). February 2015.
Brad Kovar, Martin L. King, and Dr. Priyotosh Chakravarty, 2013, Suggested Guidelines for Wildfire Smoke Damage Investigations and Remediation. Edited by Dr. Michael Larrañaga. Journal of Cleaning, Restoration & Inspection. A peer-reviewed publication of the Institute of Inspection, Cleaning and Restoration Certification (IICRC). June 2015.
Brad Kovar and Martin L. King, 2014, The Use of Primers and Sealers after Fire and Smoke Damage, Journal of Cleaning, Restoration & Inspection. A peer reviewed publication of the Institute of Inspection, Cleaning and Restoration Certification (IICRC). February 2016.
Kovar, Brad, Russ Crutcher, and Heidie Bettes, Wildfire Smoke Exposure: Comparative Study between Two Analytical Approaches; Particle Assemblage Analysis and Soot, Char and Ash Analysis, August 2016.
American Industrial Hygienist Association (AIHA) Technical Guide for Wildfire Impact Assessments; A Guide for the Occupational and Environmental Health and Safety Professional. Brad Kovar primary author and citation. March 2018. AIHA Stock #ESAH18-796
American Industrial Hygienist Association (AIHA) Health and Safety Issues in Natural Disasters. Brad Kovar contributing author and citation. April 2017
Brad Kovar and Anthony W. Burton, Esq., Investigating and Litigating Mold Claims, The Gavel – Orange County Trial Lawyers Association, Volume 21, Number 4, Fall 2018
Brad Kovar, Engineering Case Study: What is the Long-Term Effectiveness of Antifungal Agents Commonly Used in Remediation Practices, Indoor Air Quality Association (IAQA), In the Air – Technical Articles & News for IAQA Members, Winter 2018, Volume 2, Issue
W.A. Ayer, L.S. Trifonov, L.J. Hutchison, and P. Chakravarty. 2000. Metabolites from a wood-inhabiting cup fungus, Urnula craterium. Natural Product Letters 14: 405-410.
P. Chakravarty, P. D. Khasa, B.P. Dancik, L. Sigler, M. Wichlacz, and L.S. Trifonov. 1999. Integrated control of Fusarium damping-off in conifer seedlings. Zeitschrift für Pflanzenkran. und Pflanzenschutz 106: 342-352.
Y. Hiratsuka and P. Chakravarty. 1999. Role of Phialemonium curvatum as a potential biological control agent against a blue stain fungus on aspen. European Journal of Forest Pathology 29: 305-310.
M. Wichlacz, W.A. Ayer, L.S. Trifonov, P. Chakravarty, and Khasa, D. 1999. cis- Fused caryophyllenes from liquid cultures of Hebeloma longicauidum. Phytochemistry 51: 879-877.
M. Wichlacz, W.A. Ayer, L.S. Trifonov, P. Chakravarty, and Khasa, D. 1999. A caryophyllene related sesquiterpene and two 6,7-seco-caryophyllenes from liquis cultures of Hebelomalongicaudum. Journal of Natural Products 62: 484-486.
E.A. Pedersen, M.S. Reddy, and P. Chakravarty. 1999. Effect of three species of bacteria on damping-off, root rot development, and ectomycorrhizal colonization of ledgepole pine and white spruce seedlings. European J. Forest Pathology 29: 123-134.
P. Chakravarty, Y. Hiratsuka, L.S. Trifonov, and W.A. Ayer. 1997. Antifungal activity of derivatives of tiglic and senecioic acid against three aspen pathogens. Phytopath. Z. 104: 254-259.
P. Chakravarty and Y. Hiratsuka. 1996. Effect of lecythophorin on the in vitro growth of three aspen pathogens and its role in controlling stain and decay of aspen wood. Phytopath.Z. 103: 164-170.
P. Crane, P. Chakravarty, L.J. Hutchison, and Y. Hiratsuka. 1996. Wood-degrading
capabilities of microfungi isolated from Populus tremuloides. Material und Organismen 30: 33-44.
W.A. Ayer, D.J. Muir, and P. Chakravarty. 1996. Phenolics and other metabolites of Phellinus pini, a fungus pathogenic to pine. Phytochemistry 42: 1321-1324.
L.S. Trifonov, W.A. Ayer, P. Chakravarty, and Y. Hiratsuka. 1996. Structure-activity relationships of some congeners of 4-phenyl-3-butenoic acid against aspen decay and stain fungi. European J. Forest Pathology 26: 273-280.
P. Chakravarty. 1995. The interactions of western gall rust, a hyperparasitic fungus, and a beetle on lodgepole pine. Proc. 4th IFURO Symp. Rust of Pines. University of Tsukuba and University of Ibaraki, Japan. 1995. 185-191.
S. Hwang, P. Chakravarty, and K. Chang. 1995. The effect of two ectomycorrhizal fungi, Paxillus involuts, and Suillus tomentosus, and of Bacillus subtilis on Fusarium damping-off in Jack pine seedlings. Phytoprotection 76: 57-66.
Y. Hiratsuka, T. Stokes, P. Chakravarty, and D. Morgan. 1995. A field guide to classify and measure aspen decay and stain. Canadian Forest Service, Northwest Region. Special Report No. 4. 27 pp.
P. Chakravarty and Y. Hiratsuka. 1994. Evaluation of Lecythophora hoffmannii as a potential biological control agent against a blue stain fungus on Populus tremuloides. Zeitschrift für Pflanzenkran. und Pflanzenschutz 101(1): 74-79.
P. Chakravarty, L. Trifonov, L.J. Hutchison, Y. Hiratsuka, and W.A. Ayer. 1994. Role of Sporormiella similis as a potential bioprotectant of Populus tremuloides wood against the blue-stain fungus Ophiostoma piliferum. Canadian Journal of Forest Research 24: 2235-2239.
Y. Hiratsuka, P. Chakravarty, S. Miao, and W.A. Ayer. 1994. Potential for biological protection against blue stain in Populus tremuloides with a hyphomycetous fungus, Stachybotrys cylindrospora. Canadian Journal of Forest Research 24: 174-179.
L.J. Hutchison, P. Chakravarty, L.M. Kawchuk, and Y. Hiratsuka. 1994. Phoma etheridgei sp. nov. from black gall and cankers of trembling aspen (Populus tremuloides) and its potential role as a bioprotectant against the aspen decay pathogen Phellinus tremulae. Canadian Journal of Botany 72: 1424-1431.
S.F. Hwang and P. Chakravarty. 1993. Root rot disease complex of field pea in central Saskatchean in 1990. Can. Plant Dis. Surv. 73: 98-99.
S.F. Hwang and P. Chakravarty. 1993. Integrated biological and chemical control of Rhizoctonia root rot of field pea by Gliocladium virens and a fungicide. Zeitschrift für Pflanzenkrank. Pflanzenschutz 100(3): 308-316.
S.F. Hwang, P. Chakravarty, and D. Prevost. 1993. Effects of rhizobia, metalaxyl, and VA mycorrhizal fungi on growth, nitrogen fixation, and development of Pythium root rot of sainfoin. Plant Disease 77: 1093-1098.
P. Chakravarty and Y. Hiratsuka. 1992. Antagonism of two decay fungi, Peniophora polygonia and Phellinus tremulae associated with Populus tremuloides. European Journal of Forest Pathology 22: 345-361.
L.S. Trifonov, P. Chakravarty, Y. Hiratsuka, and W.A. Ayer. 1992. Antifungal activity of metabolites of Peniophora polygonia against the aspen decay fungus Phellinus tremulae. European Journal of Forest Pathology 22: 354-361.
S.F. Hwang and P. Chakravarty. 1992. Potential for the integrated control of Rhizoctonia root-rot of Pisum sativum using Bacillus subtilis and a fungicide. Zeitschrift für Pflanzenkrank. Pflanzenschutz 99(6): 626-636.
S.F. Hwang, K.F. Chang, and P. Chakravarty. 1992. Effects of vesicular-arbuscular mycorrhizal fungi on the development of Verticillium and Fusarium wilts of alfalfa. Plant Disease 76: 239-243.
P. Chakravarty, R.L. Peterson, and B.E. Ellis. 1991. Interactions between the ectomycorrhizal fungus Paxillus involutus, damping-off fungi and Pinus resinosa seedlings. Phytopathol.Z. 132: 207-218.
T. Unestam, P. Chakravarty, Eva Damm. 1991. Fungicides: In vitro tests not useful for evaluating effects on ectomycorrhizae. Agriculture, Ecosystems and Environment (Elsevier, Amsterdam, The Netherlands) 28: 535-538.
P. Chakravarty and S.F. Hwang. 1991. Role of ectomycorrhizal fungus, Laccaria laccata on Fusarium damping-off in Pinus banksiana seedlings. European Journal of Forest Pathology 21: 97-106.
P. Chakravarty, R.L. Peterson, and B.E. Ellis. 1990. Integrated control of Fusarium damping-off in red pine seedlings with Paxillus involutus and fungicides. Canadian Journal of Forest Research 20: 1283-1288.
P. Chakravarty, P.F. Jacobs, and R.L. Peterson. 1990. Effect of fungicides benomyl and oxine benzoate on the mycelial growth of four isolates of E-strain fungi in vitro. European Journal of Forest Pathology 20: 381-385.
S. Sidhu and P. Chakravarty. 1990. Studies on the effect of some selected forestry herbicides on seedling growth and ectomycorrhizal development of lodgepole pine and white spruce seedlings. European Journal of Forest Pathology 20: 77-94.
P. Chakravarty and L. Chatarpaul. 1990. Non-target effect of herbicides. I. Effect of glyphosate and hexazinone on soil microbial activity, microbial population, and in vitro growth of ectomycorrhizal fungi. Pesticide Science 28: 233-241.
P. Chakravarty and L. Chatarpaul. 1990. Non-target effect of herbicides. II. The influence of glyphosate on ectomycorrhizal symbiosis of red pine under greenhouse and field conditions. Pesticide Science 28: 243-247.
P. Chakravarty and L. Chatarpaul. 1990. Effect of fertilization on seedling growth, ectomycorrhizal symbiosis, and nutrient uptake of Larix laricina. Canadian Journal of Forest Research 20: 245-248.
P. Chakravarty. 1990. The influence of vesicular-arbuscular mycorrhizal fungi on the damping-off in tobacco seedlings. Proc. 23rd International Horticultural Congress, Firenze, Italy.
L. Chatarpaul, P. Chakravarty, and P. Subramaniam. 1989. Studies in tetra partite symbiosis. I. Role of ecto- and endomycorrhizal fungi and Frankia on the growth performance of Alnus incana. Plant and Soil 118: 145-150.
P. Chakravarty, L. Chatarpaul, and P. Subramaniam. 1988. The effects of glyphosate [(phosphonomethyl) glycine] on soil microbial activity and mycorrhizal development of Pinus resinosa. Proc. Canadian Workshop on Mycorrhizae in Forestry. Univ. Laval and Forestry Canada, Quebec, Canada. pp. 103-108.
P. Chakravarty and L. Chatarpaul. 1988. The effects of Velpar L. (Hexazinone) on seedling growth and ectomycorrhizal symbiosis of Pinus resinosa. Canadian Journal of Forest Research 18 :917-921.
P. Chakravarty and T. Unestam. 1987. Differential influence of ectomycorrhizae on plant growth and disease resistance in Pinus sylvestris seedlings. Phytopathol. Z. 120: 104-120.
P. Chakravarty and S.S. Sidhu. 1987. Effect of hexazinone (Pronone TM 5G) on the seedling growth and ectomycorrhzal incidence of Pinus contorta var. latifolia and Picea glauca. European Journal of Forest Pathology 17(4-5): 282-291.
P. Chakravarty and S.S. Sidhu. 1987. Effect of glyphosate, hexazinone, and triclopyr on in vitro growth of five species of ectomycorrhizal fungi. Europena Journal of Forest Pathology 17(4-5): 204-210.
T. Unestam, P. Chakravarty, and Eva Damm. 1987. Mycorrhizal protection of pine roots against pathogens. Proc. 7th North American Confernce on Mycorrhizae. University of Florida, Gainesville, Florida, U.S.A. pp. 267.
P. Chakravarty and T. Unestam. 1987. Mycorrhizal fungi prevent disease in stressed pine seedlings. Phytopathol. Z. 118(4): 335-340.
P. Chakravarty and L. Chatarpaul. 1987. Effect of hexazinone on ectomycorrhizal pine and spruce seedlings. Proc. 7th North American Conference on Mycorrhizae. University of Florida, Gainesville, Florida, U.S.A. pp. 197.
P. Chakravarty. 1986. Studies in Forest Pathology. IV. Potentially dangerous canker
disease caused by Corticium salmonicolor. Ind. Botanical Reporter 5: 87-88.
P. Chakravarty and R.R. Mishra. 1986. Influence of endotrophic mycorrhizae on the fusarial wilt of Cassia tora. Phytopathol. Z. 115: 130-133.
P. Chakravarty and R.R. Mishra. 1986. The influence of VA mycorrhizae on the wilting of Albizia procera Benth. and Dalbergia sissoo Roxb. European J. Forest Pathology 16(2): 91-98.
P. Chakravarty and T. Unestam. 1985. Role of mycorrhizal fungi in protecting damping-off in Pinus sylvestris L. seedlings. Proc. 1st European Symposium on Mycorrhizae (Mycorrhizae: Physiology and Genetics), Dijon, France. pp. 811-814.
P. Chakravarty and R.R. Mishra. 1983. Studies in Forest Pathology. V. Host range of Cephaleurous virescence Künze and the biochemical changes of the infected leaves. European Journal of Forest Pathology 13: 109-115.
P. Chakravarty. 1983. Leaf blight of Nepenthes khasiana Hk.f. Indian Botanical Reporter 2: 59-61.
P. Chakravarty. 1983. Studies in Forest Pathology. I. Occurence of certain red rust in Meghalaya forests. Ind. Journal of Physical and Natural Sciences 3: 30-32.
P. Chakravarty and R.R. Mishra. 1982. Studies in Forest Pathology. III. Root rot due to Rhizoctonia solani Kühn. European Journal of Forest Pathology 12 (6-7): 308-326.
P. Chakravarty. 1982. New records of Alternaria alternata. Indian Phytopathology 35: 164.
P. Chakravarty. 1981. New records of Alternaria alternata (Fr.) Keiss. on Stercularia villosa Roxb. Current Science 50: 740.
P. Chakravarty. 2007. Microbiological sample preparation at the laboratory. Mold and Moisture Management Magazine. June 2007.
Chapter in Books
L.S. Trifonov and P. Chakravarty. 1999. Lactarius species (Mushrooms): In vitro culture and the production of sesquiterpenes, and other secondary metabolites. Biotechnology in Agriculture and Forestry. Springer, Berlin, Germany.
R.L. Peterson and P. Chakravarty. 1991. Techniques in synthesizing ectomycorrhizae. In: Methods in Microbiology (Vol. 23 and 24): Experiments with Mycorrhizae. Edited by A.K. Varma, J.R. Norris, and D.J. Read. Academic Press, London. pp. 75 - 106, 1991.
L. Chatarpaul, P. Chakravarty, and P. Subramaniam. 1989. Ectomycorrhizal effects on nodulation, nitrogen-fixation, and growth of Alnus glutinosa as affectd by glyphosate. In: Application of Biotechnology in Forestry and Horticulture. Ed. V. Dhawan. Plenum Press, New York. pp. 309-320.
P. Chakravarty. Role of actinorhizal plants on land reclamation. CRC Publications, Florida, U.S.A.
Government Publications
Y. Hiratsuka, P. Chakravarty, and R.A. Bohning. 1996. A field guide to decay and stain of conifers in Alberta. Canadian Forest Service and Alberta Land and Forest Service, Joint Publications. 8005A-3-142. 25 pp.
P. Chakravarty. 1995. Decay and stain fungi of North American conifers with special reference to the prairie provinces. Canadian Forest Service and Alberta Land and Forest Service, Joint Publications. A 7061-132. 37 pp.
P. Chakravarty. 1995. Antagonistic fungi of aspen decay and stain and their potential uses. Proc. Aspen stain and decay. Canadian Forest Service and Alberta land and Forest Service, Joint Publications. A 7039, XOD7232-130. P. 32-35.
Manuscripts in Press
P. Chakravarty. Integrated biological and chemical control of Fusarium damping-off in lodgepole pine using Gliocladium virens, Bacillus subtilis, and fungicide. European J.Forest Pathology.
Published Abstracts
P. Chakravarty and M. Kean. 1996. Transfer of symbiotically fixed nitrogen from alder to white spruce via ectomycorrhizal hyphae. First International Conference on Mycorrhizae. The University of California, Berkeley, California, U.S.A.
P. Chakravarty, P. Crane, Y. Hiratsuka, and L.J. Hutchison. 1994. Degradation of Populus tremuloides wood by microfungi. Canadian Phytopathological Annual Meeting. Edmonton, Alberta, Canada.
L. J. Hutchison and P. Chakravarty. 1994. An investigation into the biological control of sap-stain and decay in Populus tremuloides. The 14th Annual Meeting of Great Lakes - St. Lawrence Winter Workshop in Mycology. March 5-6, 1994. University of Western Ontario, London, Ontario, Canada.
L. J. Hutchison, P. Chakravarty, and Y. Hiratsuka. 1993. The identity and ecology of filamentous fungi associated with black galls of trembling aspen. Inoculum. 1993.
L. J. Hutchison, P. Chakravarty, and Y. Hiratsuka. 1992. The microbial interactions and ecology of fungi isolated from decayed, stained, and healthy aspen poplar found in Alberta and British Columbia. Canadian Phytopathological Society, Annual Meeting. July 20-29, 1992 Charlottetown, Prince Edward Island, Canada. (Canadian J. Plant Pathology 14: 244, 1992).
P. Chakravarty. 1991. The effects of nodulated and mycorrhizal black alder on growth, nutrient uptake, and mycorrhiza formation of white spruce. Third European Symposium on Mycorrhizas. Universit of Sheffield, U.K. August 19-23, 1991
S.F. Hwang and P. Chakravarty. 1990. Suppression of Rhizoctonia solani root-rot of field pea by Gliocladium virens and fungicide. Plant Pathological Society of Alberta Annual Meeting. Edmonton, Alberta, Canada. Nov. 6-7, 1990.
P. Chakravarty and S.F. Hwang. 1990. Effect of an ectomycorrhizal fungus, Laccaria laccata, on Fusarium damping-off in Pinus banksiana seedlings. Workshop on Biological Pest Control in Canada. Alberta Environmental Centre. Oct. 11-12, 1990. Calgary, Alberta, Canada.
P. Chakravarty, R.L. Peterson, and B.E. Ellis. 1990. Differential influence of an ectomycorrhizal fungus, Paxillus involutus and damping-off fungi in the rhizosphere on Pinus resinosa seedlings. 8th North American Conference on Mycorrhizae. Jackson, Wyoming, U.S.A. Sept. 5-8, 1990.
P. Chakravarty, R.L. Peterson, and B.E. Ellis. 1990. Role of Paxillus involutus in damping-off in Pinus resinosa seedlings. 4th International Mycological Congress. Regensburg, Federal Republic of Germany. August 28 - Sept. 3, 1990. p. IIC-113/3.
P. Chakravarty. 1990. The influence of VA mycorrhizae on the damping-off of Nicotiana tabacum. XXIII. International Horticultural Congress. Firenze, Italy. 1990.
P. Chakravarty and L. Chatarpaul. 1988. Protective influence of ectomycorrhizae againstFusarium root-rot of certain conifer seedlings. 2nd EuropeanConference on Mycorrhizae. Prague, Czechoslovakia. August 14-20, 1988.
P. Subramaniam, P. Chakravarty, and L. Chatarpaul. 1988. Nutritional significance of a tripartite association (Frankia-ectomycorrhizal fungi) in Alnus glutinosa Gaertn. 7th International Conference on Frankia and Actinorhizal plants. University of Connecticut, Storrs, CT, U.S.A. August 7-10, 1988.
P. Chakravarty, L. Chatarpaul, and P. Subramaniam. 1988. Tetra partite associations of Alnus, Frankia, ecto- and endomycorrhizae. 7th International Conference on Frankia and Actinorhizal plants. University of Connecticut, Storrs, CT, U.S.A. August 7-10, 1988.
L. Chatarpaul, P. Chakravarty, P. Subramaniam. 1988. Investigating the benefits of tripartite association in actinorhizal plants for enhanced forest productivity. International Workshop on Application of Plant Biotechnology in Forestry and Horticulture. New Delhi, India. Jan. 14-18, 1988.
P. Chakravarty, P. Subramaniam, and L. Chatarpaul. 1988. Effect of glyphosate on soil microbial activity and mycorrhizal development of red pine. Canadian Workshop on Mycorrhizae in Forestry. Forestry Canada and the University of Laval, Quebec City, Quebec, Canada. May 1-4, 1988.
P. Chakravarty, P. Subramaniam, and L. Charatpaul. 1988. Effect of glyphosate [N (phosphonomethyl) glycine] on soil microflora, nitrogen-fixation, seedling growth and ectomycorrhization of Alder and Pine. 1st Asain Conference on Mycorrhizae. University of Madras, India. Jan. 19-31, 1988.
P. Chakravarty and L. Chatarpaul. 1987. Effect of Velpar L. (hexazinone) on the growth and mycorrhization of red pine seedlings. American Society of Agronomy, Annual meetings. Atlanta, Georgia, U.S.A. Nov. 19 - Dec. 4, 1987.
P. Chakravarty. 1987. Effect of hexazinone (Pronone TM 5G) on the in vitro and in vivo growth of ectomycorrhizae of Pinus contorta var. latifolia and Picea glauca. 7th North American Conference on Mycorrhizae. The University of Florida, Gainesville, Florida, U.S.A. May 2-8, 1987
P. Chakravarty and T. Unestam. 1986. Effect of fungal toxicants on mycorrhizal Pinus sylvestris seedlings. Symp. Roots in Forest Soils: Biology and Symbioses. University of Victoria, British Columbia, Canada.
T. Unestam and P. Chakravarty. 1986. Protection of root initiation and seedling growth in Scotch pine seedlings against pathogens by diferent mycorrhizal fungi. Difference between growth stages. Symp. Roots in Forest Soils: Biology and Symbioses. The University of Victoria, British Columbia, Canada. August 4-8, 1986.
P. Chakravarty and T. Unestam. 1985. Role of mycorrhizal fungi in protecting damping-off of Pinus sylvestris seedlings. 1st European Symposium on Mycorrhizae. Stan. D'amelioration des plantes. Dijon, France. July 1-5, 1985.
P. Chakravarty and R.R. Mishra. 1983. Influence of VA mycorrhizal fungi on the Fusarial wilt of Albizia lebbeck. Symposium on Recent Trends in Microbial Ecology. North-Eastern Hill University, Shillong, India. March 21-31, 1983.
P. Chakravarty and R.R. Mishra. Studies in Forest Pathology. VI. White rot of certain living trees Symp. Recent Trends in Microbial Ecology. North-Eastern Hill University, Shillong, India. March 21-31, 1983. p.14.
Manuscripts
P. Chakravarty. Interactions between Fusarium spp. and Bacillus subtilis on the root systems of Larix laricina, Picea glauca, and Pinus resinosa seedlings.
P. Chakravarty. Studies in tetra partite symbioses.II. Role of Frankia and ecto- and endomycorrhizal fungi on nitrogenase activity and nutrient content in Alnus incana.
P. Chakravarty. Mycorrhizae : A biotechnological opportunity for Canadian forestry.
P. Chakravarty. Role of phenolic compounds on the resistance of mycorrhizal mycorrhizal red pine seedlings against Fusarium damping-off.
M. Wichlacz, W.A. Ayer, L.S. Trifonov, P. Chakravarty, and D. Khasa.Two 6,7-seco-caryophyllenes and an alloaromadendrane from liquid cultures of Hebeloma longicaudum. Phytochemistry.
P. D. Khasa, P. Chakravarty, A. Robertson, B.R. Thomas, and B. Dancik. Themycorrhizal ststus of selected poplar clones in Alberta. Mycorrhiza. Mycorrhiza
P. Chakravarty, L. Sigler, B.P. Dancik, and B.P. Dancik. Effect of fertilization on the growth, mycorrhizal development, and nutrient uptake of container-grown lodgepole pine seedlings. Canadian Journal of Forest Research.
P. Chakravarty, P. D. Khasa, L. Sigler, and B.P. Dancik. Effect of fertilization levels on ectomycorrhizal colonization, seedling development and nutrient uptake in container-grown conifer seedlings. Scandinavian J. Forest Research.
P. Chakravarty, L. Sigler, B.P. Dancik, L. Erickson, D. McCurdy, and P.D. Khasa. Effect of fertilization on seedling growth and ectomycorrhizal development of conifer seedlings in container-grown and bare-root nurseries. New Forests.
P. Chakravarty, P.D. Khasa, B.P. Dancik, B. Thomas, T. Johnson, J.Wong, K. Thomas, and A.R. Robertson. Effect of fertilization on the growth, mycorrhizal colonization, and nutrient uptake of aspen and balsam poplar seedlings. Mycorrhiza.
Book Under Preparation
P. Chakravarty. Pesticides and beneficial soil microorganisms. Birkhauser Verlag AG, Basel, Switzerland.