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Singh, R B and Rao, V P and Sengar, R S (2023) Study of salinity induced oxidative stress and antioxidant responses in callus cultures of sugarcane. Ecological Genetics and Genomics, 26. ISSN 2405-9854
Rao, V P and Sengar, R S and Singh, R B (2021) Identification of salt tolerant sugarcane cultivars through phenotypic, physiological and biochemical studies under abiotic stress. Plant Physiology Reports, 26 (2). pp. 256-283. ISSN 2662-253X
Ambawat, S and Senthilvel, S and Hash, C T and Nepolean, T and Rajaram, V and Eshwar, K and Sharma, R and Thakur, R P and Rao, V P and Yadav, R C and Srivastava, R K (2016) QTL mapping of pearl millet rust resistance using an integrated DArT- and SSR-based linkage map. Euphytica, 209 (2). pp. 461-476. ISSN 1573-5060
Nitya, R and Sharma, R and Rao, V P and Gopalakrishnan, S and Thakur, R P (2013) Biochemical characterisation of grain mould resistant and susceptible genotypes and PGPR-induced resistance in the host to Curvularia lunata and Fusarium proliferatum. Archives of Phytopathology and Plant Protection. pp. 1-12. ISSN 0323-5408
Sharma, R and Girish, A G and Upadhyaya, H D and Humayun, P and Kiran Babu, T and Rao, V P and Thakur, R P (2013) Identification of blast resistance in a core collection of foxtail millet germplasm. Plant Disease. ISSN 0191-2917
Sharma, R and Gate, V L and Kishore Babu, B and Rao, V P and Ghughe, S S (2012) Prevalence and pathogenic diversity in pearl millet downy mildew pathogen populations in Maharashtra, India. Indian Journal of Plant Protection, 40 (4). pp. 306-311. ISSN 0253-4355
Sharma, R and Upadhyaya, H D and Manjunatha, S V and Rao, V P and Thakur, R P (2012) Resistance to foliar diseases in a Mini-core Collection of Sorghum Germplasm. Plant Disease, 96 (11). pp. 1629-13633. ISSN 0191-2917 (In Press)
Sanjana Reddy, P and Manohar Rao, D and Reddy, B V S and Ashok Kumar, A and Thakur, R P and Rao, V P (2011) Evaluation of A1, A2, A3, A4(M), A4(G) and A4(VZM) cytoplasms in iso-nuclear backgrounds for grain mold resistance. Crop Protection, 30 (6). pp. 658-662.
Ashok Kumar, A and Reddy, B V S and Thakur, R P and Sharma, R and Ramaiah, B and Rao, V P (2011) Genetic Enhancement for Grain Mold Resistance and Grain Yield in White Pericarp Sorghum. Indian Journal of Dryland Agricultural Research and Development, 26 (2). pp. 21-27. ISSN 2231-670
Sharma, R and Thakur, R P and Senthilvel, S and Nayak, S N and Veera Reddy, S and Rao, V P and Varshney, R K (2011) Identification and Characterization of Toxigenic Fusaria Associated with Sorghum Grain Mold Complex in India. Mycopathologia, 171. pp. 223-230.
Thakur, R P and Rao, V P and Sharma, R (2011) Influence of dosage, storage time and temperature on efficacy of metalaxyl-treated seed for the control of pearl millet downy mildew. European Journal of Plant Pathology, 129 (2). pp. 353-359. ISSN 0929-1873
Sharma, R and Manjunatha, S M and Rao, V P and Upadhyaya, H D and Thakur, R P (2011) Pathogenic variation in Pyricularia grisea, the causal agent of pearl millet blast and resistance in mini core collection to the pathogen. Phytopathology, 101 (6). S164. ISSN 0031-949X
Sharma, R and Rao, V P and Senthilvel, S and Rajput, S C and Thakur, R P (2011) Virulence Diversity in North Indian Isolates of Sclerospora Graminicola, the pearl millet Downy Mildew Pathogen. Journal of Plant Pathology, 93 (1). pp. 71-78.
Sharma, R and Rao, V P and Varshney, R K and Prasanth, V P and Kannan, S and Thakur, R P (2010) Characterisation of pathogenic and molecular diversity in Sclerospora graminicola, the causal agent of pearl millet downy mildew. Archives of Phytopathology and Plant Protection, 43 (6). pp. 538-551. ISSN 0323-5408
Thakur, R P and Sharma, R and Rao, P S and Reddy, P S and Rao, V P and Reddy, B V S (2010) Evaluation of sweet sorghum hybrid parents for resistance to grain mold, anthracnose, leaf blight and downy mildew. Journal of SAT Agricultural Research, 8. pp. 1-5.
Thakur, R P and Rao, V P and Sharma, R (2010) Influence of dosage, storage time and temperature on efficacy of metalaxyl-treated seed for the control of pearl millet downy mildew. European Journal of Plant Pathology, 129 (2). pp. 353-359. ISSN 0929-1873
Sharma, R and Rao, V P and Upadhyaya, H D and Reddy, V G and Thakur, R P (2010) Resistance to Grain Mold and Downy Mildew in a Mini-Core Collection of Sorghum Germplasm. Plant Disease, 94 (4). pp. 439-444. ISSN 0191-2917
Sharma, R and Deshpande, S P and Senthilvel, S and Rao, V P and Rajaram, V and Hash, C T and Thakur, R P (2010) SSR allelic diversity in relation to morphological traits and resistance to grain mould in sorghum. Crop and Pasture Science, 61 (3). pp. 230-240.
Sharma, R and Vijay, M P and Rao, V P and Thakur, R P (2009) Biochemical characterization of recently identified grain mold resistant sorghum lines. Indian Journal of Plant Protection, 37 (1-2). pp. 192-195.
Thakur, R P and Reddy, B V S and Rao, V P and Agarkar, G D and Salunke, R B and Bhat, B (2009) Evaluation of advanced sorghum breeding lines for grain mold resistance. Indian Phytopathology, 62 (2). pp. 163-170.
Sharma, R and Thakur, R P and Rai, K N and Gupta, S K and Rao, V P and Rao, A S and Kumar, S (2009) Identification of rust resistance in hybrid parents and advanced breeding lines of pearl millet. Journal of SAT Agricultural Research, 7. pp. 1-4. ISSN 0973-3094
Sudisha, J and Kumar, S A and Thakur, R P and Rao, V P and Shetty, H S (2009) Molecular characterization of Sclerospora graminicola, the incitant of pearl millet downy mildew using ISSR markers. Journal Of Phytopathology, 157. pp. 748-755.
Thakur, R P and Sharma, R and Rai, K N and Gupta, S K and Rao, V P (2009) Screening techniques and resistance sources for foliar blast in pearl millet. Journal of SAT Agricultural Research, 7. pp. 1-5. ISSN 0973-3094
Thakur, R P and Rao, V P and Sharma, R (2009) Temporal virulence change and identification of resistance in pearl millet germplasm to diverse pathotypes of Sclerospora graminicola. Journal of Plant Pathology, 91 (3). pp. 629-636.
Thakur, R P and Rao, V P and Sharma, R (2008) Characterization of grain mold resistant sorghum germplasm accessions for physio-morphological traits. Journal of SAT Agricultural Research, 6 (1). pp. 1-7.
Sharma, R and Rao, V P and Rai, K N and Thakur, R P (2008) Genetic Resistance in Pearl Millet Seed Parent Lines Against Diverse Pathotypes of Sclerospora graminicola. Indian Journal of Plant Protection, 36 (2). pp. 272-276. ISSN 0253-4355
Thakur, R P and Rao, V P and Sharma, R (2007) Evidence for temporal virulence change in pearl millet downy mildew pathogen populations in India. Journal of SAT Agricultural Research, 3 (1). pp. 1-3.
Thakur, R P and Chandrashekara Rao, K and Rao, V P and Pushpavathi, B (2006) Characterization of Sclerospora graminicola Isolates from Pearl Millet for Virulence and Genetic Diversity. The Plant Pathology Journal, 22 (1). pp. 28-35.
Reddy, B V S and Thakur, R P and Ramesh, S and Rao, V P and Reddy, P S (2006) Effects of cytoplasmic-nuclear male-sterility systems on Sorghum grain mold development. International Sorghum and Millets Newsletter, 47. pp. 16-20. ISSN 1023-487X
Sharma, Y K and Rao, V P and Thakur, R P and Rai, K N (2006) Efficiency of pathotype mixture in screening for Downy Mildew resistance in Pearl Millet. International Sorghum and Millets Newsletter, 47. pp. 139-142.
Rao, V P and Thakur, R P and Singh, A K and Rai, K N (2006) Evaluation of Pearl Millet male-sterile lines and their maintainers for resistance to Downy Mildew and Smut. International Sorghum and Millets Newsletter, 47. pp. 131-133.
Hash, C T and Thakur, R P and Rao, V P and Raj, A G B (2006) Evidence for enhanced resistance to diverse isolates of Pearl Millet Downy Mildew through gene pyramiding. International Sorghum and Millets Newsletter, 47. pp. 134-138.
Thakur, R P and Rao, V P and Agarkar, G D and Solunke, R B and Bhat, B and Navi, S S (2006) Variation in occurrence and severity of major sorghum grain mold pathogens in India. Indian Phytopathology, 59 (4). pp. 410-416.
Rao, V P and Thakur, R P and Rai, K N and Sharma, Y K (2005) Downy mildew incidence on pearl millet cultivars and pathogenic variability among isolates of Sclerospora graminicola in Rajasthan. SAT eJournal, 46. pp. 107-110.
Reddy, P S and Rao, V P and Reddy, B V S and Ramesh, S and Thakur, R P (2005) Grain mold resistance in advanced sorghum B-lines. International Sorghum and Millets Newsletter, 46. pp. 29-32.
Girish, A G and Deepti, S and Rao, V P and Thakur, R P (2004) Detection of seedborne grain mold fungi in sorghum and their control with fungicidal seed treatment. International Sorghum and Millets Newsletter, 45. pp. 31-33.
Girish, A G and Rao, V P and Thakur, R P (2004) Diversity of grain mold fungi on selected sorghum genotypes. Indian Phytopathology, 57 (1). pp. 84-87. ISSN 0367-973X
Rao, V P and Thakur, R P (2004) Downy mildew incidence and oospore production by Sclerospora graminicola in pearl millet hybrids in Maharashtra and Rajasthan. International Sorghum and Millets Newsletter, 45. pp. 57-61.
Rai, K N and Kulkarni, V N and Thakur, R P and Singh, A K and Rao, V P (2004) Effectiveness of within-progeny selection for downy mildew resistance in pearl millet. International Sorghum and Millets Newsletter, 45. pp. 45-47.
Thakur, R P and Rao, V P and Wu, B M and Subbarao, K V and Shetty, H S and Singh, G and Lukose, C and Panwar, M S and Sereme, P and Hess, D E and Gupta, S C and Dattar, V V and Panicker, S and Pawar, N B and Bhangale, G T and Panchbhai, S D (2004) Host resistance stability to downy mildew in pearl millet and pathogenic variability in Sclerospora graminicola. Crop Protection, 23 (10). pp. 901-908.
Thakur, R P and Huda, A K S and Rao, V P (2004) Using weather information to identify pearl millet downy mildew risk environments in India. International Sorghum and Millets Newsletter, 45. pp. 62-63.
Thakur, R P and Rao, V P and Amruthesh, K N and Shetty, H S and Datar, V V (2003) Field surveys of pearl millet downy mildew - effects of hybrids, fungicides and cropping sequence. Journal of Mycology and Plant Pathology, 33 (3). pp. 387-394.
Latha, J and Chakrabarti, A and Mathur, K and Rao, V P and Thakur, R P and Mukherjee, P K (2003) Genetic diversity of Colletotrichum graminicola isolates from India revealed by restriction analysis of PCR-amplified intergenic spacer region of nuclear rDNA. Current Science, 84 (7). pp. 881-883.
Thakur, R P and Rao, V P and Upadhyaya, H D and Nigam, S N and Talwar, H S (2003) Improved Screening Techniques for In-vitro Seed Colonization and Pre-harvest Seed Infection by Aspergillus flavus In Groundnut. Indian Journal of Plant Protection, 31 (2). pp. 54-60. ISSN 0253-4355
Thakur, R P and Rao, V P and Subramanyam, K (2003) Influence of biocontrol agents on population density of Aspergillus flavus and kernel infection in groundnut. Indian Phytopathology, 56 (4). pp. 408-412.
Sivaramakrishnan, S and Thakur, R P and Kannan, S and Rao, V P (2003) Pathogenic and genetic diversity among Indian isolates of Sclerospora graminicola from pearl millet. Indian Phytopathology, 56 (4). pp. 392-397.
Ramesh, C R and Sukanya, D H and Thakur, R P and Rao, V P (2003) Resistance to downy mildew (Sclerospora graminicola) in forage pearl millet (Pennisetum glaucum). Indian Journal of Agricultural Sciences, 73 (6). pp. 327-330.
Thakur, R P and Reddy, B V S and Rao, V P and Garud, T B and Agarkar, G D and Bhat, B (2003) Sorghum grain mold: resistance stability in advanced B-lines. International Sorghum and Millets Newsletter, 44. pp. 108-112.
Thakur, R P and Rao, V P and Navi, S S and Garud, T B and Agarkar, G D and Bhat, B (2003) Sorghum grain mold: variability in fungal complex. International Sorghum and Millets Newsletter, 44. pp. 104-108.
Kumar, K V K and Desai, S and Rao, V P and Nur, H A and Srilakshmi, P and Thakur, R P (2002) Evaluation of an integrated management package to reduced preharvest seed infection by Aspergillus flavus in groundnut. International Arachis Newsletter, 22. pp. 42-44.
Rao, V P and Raj, A G B and Russom, N A and Preston, S R (2002) Long smut in pearl millet - a new record from Eritrea. International Sorghum and Millets Newsletter, 43. pp. 92-93.
Latha, J and Mathur, K and Mukherjee, P K and Chakrabarti, A and Rao, V P and Thakur, R P (2002) Morphological, pathogenic and genetic variability amongst sorghum isolates of Colletotrichum graminicola from India. Indian Phytopathology, 55 (1). pp. 19-25. ISSN 0367-973X
Rao, V P and Lukose, C and Kadvani, D L and Thakur, R P (2002) Pearl millet downy mildew in Gujarat. International Sorghum and Millets Newsletter, 43. pp. 95-96.
Rao, V P and Raj, A G B and Russom, N A and Preston, S R and Bidinger, F R (2002) Prevalence of pearl millet downy mildew in Eritrea. International Sorghum and Millets Newsletter, 43. pp. 93-95.
Rao, V P and Abraha, T and Obilana, A B and Preston, S R (2002) Sorghum diseases in Eritrea - a survey report. International Sorghum and Millets Newsletter, 43. pp. 57-60.
Thakur, R P and Rao, V P (2001) Biological control of preharvest Kernel infection by Aspergillus flavus in groundnut,2001. B&C Tests (17). pp. 1-2.
Mathur, K and Thakur, R P and Rao, V P (2001) Characterization of Colletotrichum graminicola populations from a sorghum hybrid CSH 9 for morphological and pathogenic variability. Indian Phytopathology, 54 (3). pp. 299-303. ISSN 0367-973X
Thakur, R P and Rai, K N and Rao, V P and Rao, A S (2001) Genetic Resistance of Pearl Millet Male-Sterile Lines to Diverse Indian Pathotypes of Sclerospora graminicola. Plant Disease, 85 (6). pp. 621-626. ISSN 0191-2917
Sastry, J G and Sivaramakrishnan, S and Rao, V P and Thakur, R P and Singru, R S and Gupta, V S and Ranjekar, P K (2001) Genetic basis of host-specificity in Sclerospora graminicola, the pearl millet downy mildew pathogen. Indian Phytopathology, 54 (3). pp. 323-328. ISSN 0367-973X
Srilakshmi, P and Thakur, R P and Prasad, K S and Rao, V P (2001) Identification of Trichoderma species and their antagonistic potential against Aspergillus flavus in groundnut. International Arachis Newsletter, 21. pp. 40-43. ISSN 1010-5824
Anjaiah, V and Thakur, R P and Rao, V P (2001) Molecular diversity in Trichoderma isolates with potential for biocontrol of Aspergillus flavus infection in groundnut. International Arachis Newsletter, 21. pp. 31-33. ISSN 1010-5824
Desai, S and Thakur, R P and Rao, V P and Anjaiah, V (2000) Characterization of Isolates of Trichoderma for Biocontrol Potential Against Aspergillus flavus Infection in Groundnut. International Arachis Newsletter, 20. pp. 57-59.
Thakur, R P and Rao, V P and Reddy, S V and Ferguson, M (2000) Evaluation of Wild Arachis Germplasm Accessions for In Vitro Seed Colonization and Anatoxin Production by Aspergillus flavus. International Arachis Newsletter, 20. pp. 44-46. ISSN 1010-5824
Mathur, K and Thakur, R P and Rao, V P (2000) Pathogenic variability and vegetative compatibility among isolates of Colletotrichum graminicola and C. gloeosporioids causing foliar and grain anthracnose in sorghum. Indian Phytopathology, 53 (3). pp. 407-414. ISSN 0367-973X
Thakur, R P and Rao, V P and Sastry, J G and Sivaramakrishnan, S and Amruthesh, K N and Barbind, L D (1999) Evidence for a New Virulent Pathotype of Sclerospora graminicola Pearl Millet. Journal of Mycology and Plant Pathology, 29 (1). pp. 61-69.
Thakur, R P and Rao, V P and Sastry, J G and Sivaramakrishnan, S and Amruthesh, K N and Barbind, L D (1999) Evidence for a New Virulent Pathotype of Sclerospora graminicola on Pearl Millet. Indian Journal of Mycology & Plant Pathology, 29 (1). pp. 61-69. ISSN 0303-4097
Mathur, K and Thakur, R P and Rao, V P (1999) A simple method for long-term preservation of cultures of Colletotrichum graminicola and C. gloeosporioides [Glomeralla cingulata] causing anthracnose in sorghum. International Sorghum and Millets Newsletter, 40. pp. 43-44.
Rao, V P and Thakur, R P and Mathur, K (1998) Morphological and pathogenic diversity among grain sorghum isolates of Colletotrichum graminicola in India. Indian Phytopathology, 51 (2). pp. 164-174.
Thakur, R P and Mathur, K and Rao, V P and Chandra, S and Shivramkrishnan, S and Kannan, S and Hiremath, R V and Tailor, H C and Kushwaha, U S and Dwivedi, R R and Indira, S (1998) Pathogenic and genetic characterization of six Indian populations of Colletotrichum sublineolum, the causal agent of sorghum anthracnose. Indian Phytopathology, 51 (4). pp. 338-348.
Thakur, R P and Pushpavathi, B and Rao, V P (1998) Virulence Characterization of Single-Zoospore Isolates of Sclerospora graminicola from Pearl Millet. Plant Disease, 82 (7). pp. 747-751.
Thakur, R P and Rao, V P and Hash, C T (1998) A highly virulent pathotype of Sclerospora graminicola from Jodhpur, Rajasthan, India. International Sorghum and Millets Newsletter, 39. pp. 140-142. ISSN 0584-1321
Thakur, R P and Rao, V P and Singh, S D and Navi, S S (1997) Characterization of Downy Mildew Resistance in Pearl Millet. Indian Journal of Mycology & Plant Pathology, 27 (1). pp. 6-16. ISSN 0303-4097
Mathur, K and Rao, V P and Thakur, R P (1997) Intra-population Variability in Colletotrichum sublineoium Infecting Sorghum. Indian Journal of Mycology & Plant Pathology, 27 (3). pp. 302-310. ISSN 0303-4097
Mathur, K and Rao, V P and Thakur, R P (1997) Intra-population Variability in Colletotrichum sublineolum Infecting Sorghum. Journal of Mycology and Plant Pathology, 27 (3). pp. 302-310.
Mathur, K and Thakur, R P and Rao, V P (1997) A Strain of Colletotrichum gloeosporioides Causing Anthracnose on Yellow Sorghum. International Sorghum and Millets Newsletter, 38. pp. 69-70. ISSN 1023-487X
Thakur, R P and Rao, V P (1997) Variation in virulence and aggressiveness among pathotypes of Sclerospora graminicola on pearl millet. Indian Phytopathology, 50 (1). pp. 41-47. ISSN 0367-973X
Thakur, R P and Rao, V P and King, S B (1992) Factors associated with ergot resistance in pearl millet. Indian Phytopathology, 45 (3). pp. 326-330.
Thakur, R P and Rao, V P and King, S B (1991) Influence of Temperature and Wetness Duration on Infection of Pearl Millet by Claviceps fusiformis. Phytopathology , 81 (8). pp. 835-838. ISSN 0031-949X
Thakur, R P and Rao, V P and King, S B (1991) Influence of flowering event factors in cytoplasmic male sterile lines and F1 hybrids on infection by Claviceps fusiformis in pearl millet. Plant Disease, 75 (12). pp. 1217-1222. ISSN 0191-2917
Thakur, R P and Rao, V P and King, S B (1989) Ergot Susceptibility in Relation to Cytoplasmic Male Sterility in Pearl Millet. Plant Disease, 73 (8). pp. 676-678. ISSN 0191-2917
Thakur, R P and Rao, V P (1988) Effectiveness of ethrel as a male gametocide in pearl millet and its influence on ergot. Plant Breeding, 101 (2). pp. 107-113. ISSN 0179-9541
Rao, V P and Thakur, R P (1988) Fusarium semitectum var. majus - a potential biocontrol agent of ergot (Claviceps fusiformis) of pearl millet. Indian Phytopathology, 41 (4). pp. 567-574. ISSN 0367-973X
Thakur, R P and Rao, V P and Williams, R J and Chahal, S S and Mathur, S B and Pawar, N B and Nafade, S D and Shetty, H S and Singh, G and Bangar, S G (1985) Identification of stable resistance to ergot in pearl millet. Plant Disease, 69 (11). pp. 982-985. ISSN 0191-2917
Chahal, S S and Rao, V P and Thakur, R P (1985) Variation in morphology and pathogenicity in Claviceps fusiformis, the causal agent of pearl millet ergot. Transactions of the British Mycological Society, 84 (2). pp. 325-332.
Thakur, R P and Rao, V P and Williams, R J (1984) The Morphology and Disease Cycle of Ergot Caused by Claviceps fusiformis in Pearl Millet. Phytopathology, 74. pp. 201-205.
Thakur, R P and Williams, R J and Rao, V P (1983) Control of ergot in pearl millet through pollen management. Annals of Applied Biology, 103 (1). pp. 31-36. ISSN 0003-4746
Thakur, R P and Williams, R J and Rao, V P (1982) Development of resistance to ergot in pearl millet. Phytopathology , 72 (4). pp. 406-408. ISSN 0031-949X
Thakur, R P and Sharma, R and Rao, V P (2011) Screening Techniques for Pearl Millet Diseases. Information Bulletin No. 89. Technical Report. Patancheru, Andhra Pradesh, India, International Crops Research Institute for the Semi-Arid Tropics .
Ranga Rao, G V and Marimuthu, S and Wani, S P and Rao, V P (2010) Insect pests of Jatropha curcas., L and their management. Information Bulletin. Technical Report. International Crops Research Institute for Semi-Arid Tropics, Patancheru, Andhra Pradesh India.
Thakur, R P and Gunjotikar, G A and Rao, V P (2010) Safe Movement of ICRISAT’s Seed Crops Germplasm. Documentation. International Crops Research Institute for the Semi-Arid Tropics.
Thakur, R P and Reddy, B V S and Indira, S and Rao, V P and Navi, S S and Yang, X B and Ramesh, S (2006) Sorghum Grain Mold Information Bulletin No. 72. Technical Report. International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Andhra Pradesh, India.
Thakur, R R and Rai, K N and King, S B and Rao, V P (1993) Identification and Utilization of Ergot Resistance in Pearl Millet. Monograph. International Crops Research Institute for the Semi-Arid Tropics.
Thakur, R P and King, S B and Rai, K N and Rao, V P (1992) Identification and Utilization of Smut Resistance in Pearl Millet. Project Report. International Crops Research Institute for the Semi-Arid Tropics.
Rao, V P and Thakur, R P and King, S B (1984) Report on the Eighth [1984) International Pearl Millet Ergot Nursery (IPMEN). Other. ICRISAT, Patancheru, India.
Thakur, R P and Rao, V P and Rao, K V S (1982) Pearl Millet Improvement Program Pathology, Report of Work on Ergot and Smut June 1981 to December 1982. Documentation. ICRISAT, Patancheru.
Thakur, R P and Rao, V P and Subba Rao, K V and Williams, R J (1980) Pearl Millet Improvement Program. Project Report. ICRISAT, Patancheru, Andhra Pradesh, India.
Rao, V P and Thakur, R P (1993) Management of Panicle Diseases of Pearl Millet. In: Plant disease problems in Central India.Proceedings of Symposium on Central Zone, 1993, Hyderabad, Andhra Pradesh, India.