Dr. Megh Singh
Contact Information
Citrus Research and Education Center
Lake Alfred, Florida
Weed Science
Phone: 863.956.1151 ext. 1265
Fax: 863.956.4631
Email: msingh@ufl.edu
Education
V.B.H.S. School, Sasni, India |
Agriculture |
H.S. |
1960 |
Agra Univ., Agra, India |
Agriculture |
B.S. (Ag.) |
1964 |
U.P. Agr. Univ., Pantnagar, India |
Agronomy |
M.S. (Ag.) |
1968 |
University of Florida, Gainesville |
Agronomy |
Ph.D. |
1977 |
Specialization in M.S. (Ag.) and Ph.D. - Weed Science
Theses:
M.S. (Ag.) - Effect of Simazine and Prometryne on the control of weeds in groundnut (Arachis hypogaea L.) variety Asiriya Mwitunde.
Ph.D. - Response of sugarcane and two annual weedy grasses to s-Triazine herbicide-surfactant combinations.
Past Positions
- 1968-72, Lecturer, U.P. Agricultural University, Pantnagar
- 1972-77, Graduate Research Assistant, University of Florida
- 1977-78, Postdoctoral Fellow, University of Florida
- 1978-80, Postdoctoral Associate, University of Georgia
- 1980-Present, CREC, University of Florida
Research
This position is responsible for the total weed management research program for citrus. The main objective of my program is to develop the most efficient, economic, sustainable, and environmentally sound weed management system for Florida citrus. In order to achieve these objectives, I am currently working in the following areas of weed science:
Using both field and laboratory approaches, research is being conducted on:
- (1) determining the efficacy of available herbicides, including chemical screening and phytotoxicity;
- (2) increasing the effectiveness of herbicides, including volume, time of application, additives, and equipment;
- (3) weed biology, including seed germination ecology;
- (4) integration of weed control methods for citrus nurseries and groves with production practices;
- (5) allelopathy and other biological control methods;
- (6) herbicide physiology, herbicide resistance; and
- (7) herbicide-soil interaction studies on leaching behavior of herbicides to reduce the risk of groundwater contamination.
Refereed Publications
Puri, A., G. E. MacDonald, W. T. Haller, and Megh Singh. 2007. Growth and reproductive physiology of fluridone-susceptible and -resistant hydrilla (Hydrilla verticillata) biotypes. Weed Sci. 55:441-445.
Sharma, S. D. and Megh Singh. 2007. Effect of surfactant on leaching of pendimethalin in Florida Candler fine sand. Bull. Environ. Contam. Toxicol. 78:91-94.
Sharma, S. D. and Megh Singh. 2007. Effect of two surfactant series on absorption and translocation of 14C-glyphosate in sicklepod and prickly sida. J. Weed Biol. Management 7:219-225.
Sharma, S. D. and Megh Singh. 2007. Effect of timing and rates of application of glyphosate and carfentrazone herbicides and their mixtures on the control of some broadleaf weeds. HortScience 42:1221-1226.
Abouziena, H. F., M. F. El-Karmany, Megh Singh, and S. D. Sharma. 2007. Effect of nitrogen rates and weed control treatments on the yield attributing parameters of maize and associated weeds in sandy soils. Weed Technol. 21:1049-1053.
Sharma, S. D., Megh Singh, R. H. Brlansky, and C. A. Chase. 2007. Effects of adjuvants and epicuticular waxes, absorption and translocation of 14C-glyphosate. Proc. 8th Int. Symp. on Adjuvants for Agrochemicals, Columbus, OH, August 6-9, 2007.
Abouziena, H. F., O. M. Hafez, I. M. El-Metwally, S. D. Sharma, and Megh Singh. 2007. Comparison of weed suppression and mandarin fruit yield and quality obtained with organic mulches, synthetic mulches, cultivation, and glyphosate. HortScience 43(3):795-799.
Abouziena, H. F., E. R. El-Desoki, S. Sharma, A.A.M. Omar, and Megh Singh. 2007. Evaluation of sowing in hills on ridges as a new technique for enhancement of wheat (Triticum aestivum L.) productivity under weed control treatments. Egypt. J. Agron. 29:85-100.
Singh, Davesh and Megh Singh. 2008. Absorption and translocation of glyphosate with conventional and organosilicone adjuvants. J. Weed Biol. Management 8:104-111.
Mueller, T. C., T. A. Ellis, J. E. Beeler, S. D. Sharma, and Megh Singh. 2008. Shikimate accumulation in nine weedy species following glyphosate application. Weed Res. 48:455–460.
Abouziena, H. F., R. A. Elmergawi, S. Sharma, A. A. Omar, and Megh Singh. 2009. Zinc antagonizes glyphosate efficacy on yellow nutsedge (Cyperus esculentus). Weed Sci. 57:16-20.
Abouziena, H.F.H., A.A.M. Omar, S. D. Sharma, and Megh Singh. 2009. Efficacy comparison of some new natural-product herbicides for weed control at two growth stages. Weed Technol. 23:431-437.
Abouziena, H. F.H., S. D. Sharma, and M. Singh. 2009. Impact of adjuvants on bentazon efficacy on selected broadleaf weeds. Crop Prot. 28:1081-1085.
Singh, S. and M. Singh. 2009. Interactions of basil (Ocimum sanctum L.) with some weed species - competition or allelopathy. Indian J. Weed Sci. 41:12-22.
Sharma, S. D., M. Singh, and S. Singh. 2009. Effect of adjuvants and their concentration on rainfastness of glyphosate. Indian J. Weed Sci. (Accepted).
Singh, M., S. D. Sharma, and S. Singh. 2009. Influence of surfactants and ammonium sulfate on efficacy of glyphosate. Indian J. Weed Sci. (Accepted).
Non-refereed Publications
Futch, S. H. and Megh Singh. 2007. Weeds in Florida citrus – New challenges and opportunities. Citrus Industry 88(3):15-17.
Sharma, S. D., Megh Singh, E. K. Rawls, and J. B. Taylor. 2007. Defoliation of citrus trees by diquat. Proc. Fla. State Hort. Soc. 120:120-126.
Sharma, S. D. and Megh Singh. 2007. Effect of physiocochemical properties of two surfactant series on the distribution of 14C-glyphosate. Proc. 21st Asian Pacific Weed Sci. Soc. Conf. Colombo, Sri Lanka, October 2-6, 2007. p. 456-462.
Futch, S. H. and Megh Singh. 2007. Florida Citrus pest management guide: Weeds. In: 2007 Florida Citrus Pest Management Guide. M. E. Rogers and L. W. Timmer (eds.). Univ. of Fla., IFAS Coop. Ext. Serv. SP-43. 13 p.
Futch, S. H. and Megh Singh. 2008. Florida Citrus pest management guide: Weeds. In: 2008 Florida Citrus Pest Management Guide. M. E. Rogers, L. W. Timmer, and T. M. Spann (eds.). Univ. of Fla., IFAS Coop. Ext. Serv. SP-43. 13 p.
Sharma, S. D., Megh Singh, and S. H. Futch. 2008. Glyphosate and carfentrazone herbicides for difficult-to-control weeds in Citrus. Proc. Fla. State. Hort. Soc. 121:81-84.
Futch, S. and M. Singh. 2009. Florida Citrus pest management guide: Weeds. In: 2009 Florida Citrus Pest Management Guide. M. E. Rogers, M. M. Dewdney, and T. M. Spann (eds.). Univ. of Fla., IFAS Coop. Ext. Serv. SP-43. 13 p.
Book Chapters
Singh, Megh and S. D. Sharma. 2008. Benefits of Triazine herbicides and other weed control technology in Citrus management. Chapt. 16. In: The Triazine Herbicides─50 Years Revolutionizing Agriculture. H. M. LeBaron, J. E. McFarland, and O. C. Burnside (eds.). Elsevier, San Diego, CA. p. 199-209.
Singh, S., R. S. Choker, R. Gopal, J. K. Ladha, R. K. Gupta, V. Kumar, and M. Singh. 2009. Integrated weed management: A key to success for direct-seeded rice in the Indo-Gangetic Plains. In: Integrated Crop and Resource Management in the Rice-Wheat System of South Asia. J. K. Ladha, Yadvinder-Singh, O. Erenstein, and B. Hardy (eds.). p. 261-277.
Abstracts
Sharma, S. D. and Megh Singh. 2007. Influence of different rates and application time of glyphosate, carfentrazone and their tank mixture to control broadleaf weeds. Proc. South. Weed Sci. Soc. Nashville, TN.
Sharma, S. D., S. S. Punia, and Megh Singh. 2007. Evaluation of UPH 103 – A sulfosulfuron herbicide against complex weed flora in wheat. Abstracts of the Weed Sci. Soc. Amer. Maitland, FL.
Sharma, S. D. and Megh Singh. 2007. Examining the differences in tolerance of some weeds to glyphosate. Abstracts of the Weed Sci. Soc. Amer. San Antonio, TX.
Sharma, S. D., Megh Singh, E. K. Rawls, and J. B. Taylor, Jr. 2007. Reglone as potential defoliant for canker infected citrus trees. Annual Meeting of the Fla. Weed Sci. Soc. Maitland, FL.
Sharma, S. D., Megh Singh, E. K. Rawls, and J. B. Taylor, Jr. 2007. Defoliation of canker infected citrus trees by diquat. Annual Meeting of the Fla. State Hort. Soc. Palm Beach Gardens, FL.
Singh, Megh and S. D. Sharma. 2008. Effect of ammonium sulfate and other adjuvants as tank mix on the efficacy of glyphosate. Abstracts of the South. Weed Sci. Soc. Amer. Jacksonville, FL, January 28-30, 2008.
Sharma, S. D. and Megh Singh. 2008. Shikimate accumulation correlation to weed control in several weeds typical in citrus groves. Abstracts of the South. Weed Sci. Soc. Amer. Jacksonville, FL, January 28-30, 2008.
Singh, Megh and S. Sharma. 2008. Effect of environmental factors on the germination of Ipomoea purpurea. Abstracts of the Int. Weed. Sci. Soc. Vancouver, B.C., Canada, June 23-27, 2008.
Singh, Megh and S. Sharma. 2008. Beneficial effect of adjuvants in improving glyphosate efficacy. Abstracts of the Int. Weed. Sci. Soc. Vancouver, B.C., Canada, June 23-27, 2008.
Singh, Megh and S. D. Sharma. 2008. Efficacy of pendimethalin tank mixed with several other pre-emergence herbicides for optimum weed control in non-bearing citrus. Abstracts of the Weed Sci. Soc. Amer. Chicago, IL, February 4-7, 2008.
Sharma, S. D. and Megh Singh. 2008. The effect of adjuvants and their concentrations on rainfast of glyphosate. Abstracts of the Weed Sci. Soc. Amer. Chicago, IL, February 4-7, 2008.
Singh, Megh, S. Singh, and S. D. Sharma. 2009. Efficacy of saflufenacil on different types of weeds in citrus. Abstracts of the Weed Sci. Soc. Amer. Orlando, FL, February 9-13, 2009.
Singh, S., Megh Singh, and S. D. Sharma. 2009. Effects of adjuvants on rainfastness of different glyphosate formulations. Abstracts of the Weed Sci. Soc. Amer. Orlando, FL, February 9-13, 2009.
Singh, Megh. 2009. Crop oil or surfactant, How do I choose? 43rd Annual Convention and Exposition of the National Agricultural Aviation Association. Reno, NV, December 7-10, 2009.
Malik, M. S. and Megh Singh. 2010. Effect of glyphosate salt, growth stage, and temperature on efficacy of different citrus weeds. Abstracts of the South. Weed Sci. Soc. Amer. Little Rock, AR, January 25-27, 2010.
Singh, Megh and M. S. Malik. 2010. Evaluation of Treevix and other herbicides for weed control in citrus. Abstracts of the South. Weed Sci. Soc. Amer. Little Rock, AR, January 25-27, 2010.
Malik, M. S., S. Singh, and Megh Singh. 2010. Efficacy of saflufenacil along with glyphosate and pendimethalin for weed control in citrus. Abstracts of Weed Sci. Soc. Amer. Denver, CO, February 7-11, 2010.
Singh, Megh and M. S. Malik. 2010. Evaluation of aim and rage for broadleaf weed control in citrus. Abstracts of Weed Sci. Soc. Amer. Denver, CO, February 7-11, 2010.
Invited Presentations
Session Chair: Environment and Efficacy Section in the 30th Symposium on Pesticide Formulations and Delivery Systems: Regulations and Innovation. Atlanta, GA, October 20-22, 2009.
Presented an invited paper on “Crop Oil or Surfactant, How Do I Choose? “ 43rd Annual Convention and Exposition of the National Agricultural Aviation Association. Reno, NV, December 7-10, 2009.
International Activities
Invited to attend the 2009 Farm Chemicals International Trade Summit from 9 to 12 August, 2009 in Buenos Aires, Argentina.
