Name

:

Dr. (Mrs.) Shobha Sondhia

Date of Birth

:

20 October 1971

Designation

:

Sr. Scientist (Organic Chemistry)

Date of Joining ICAR

:

11th December, 1997

Present Address

:

NRC for Weed Science

:

Maharajpur, Jabalpur – 482 004

Telephone

:

Off. - 0761-2353101, 2353934

E-mail

:

shobhasondia@yahoo.com

Academic Qualification:

:

Ph D in Organic Chemistry, (Natural Product Chemistry)

Ph.D Theses Titles

:

Isolation, Characterization and Bioherbicidal utilization of bioactive molecules from selected plants.

Area of specialization

:

Organic Chemistry, Residue Chemistry, Natural Product Chemistry

Training Attended

:

1.                  Advances in chemical weed management and herbicide residue estimation and management at TNAU, Coimbatore,  w.e.f. 18 to 27th January 2000. 

2.                  Instrumental Methods of analysis in Agricultural Research at JNKVV, Jabalpur, w.e.f   25 February to 16, March 2000.

Summary of research interest and major achievements

 I joined Indian Agricultural Research Service, (Ministry of Agriculture) in 1997 at Central Institute of Fisheries Education (Deemed University) and worked extensively on phyto-remediation techniques and heavy metal pollution.

Since 1999, I am working at National Research Centre for Weed Science, Jabalpur on various aspects of herbicides. I have been involved in monitoring of herbicides residues (in soil, crop produce at different stages, food grains, vegetables, fodder crops, water and fishes), their impact on animal and human health, studying the influence of biotic and physicochemical factors on herbicide efficacy and selectivity, influence of environmental factors on herbicide activity. I am also conducting work on ecotoxicological research studying the effects of herbicides on non-target organism (human health, soil microbes, earthworms, beneficial insects, fishes etc.) and succeeding crops.

 Weeds management by bioherbicides (allelochemicals) by isolation of natural chemicals from plants/weeds to control problematic weeds such as Parthenium histerophorus, Ipomoea, Ischaemum rogusum, Vicia sativa, Echinochloa colona, Convolvulus arvensis,  Phaliris minor etc.

 I have isolated and identified many new triterpenoide molecules from plants by interpreting results obtained from various sophisticated spectrophotometry and chromatographic methods such as ¹H NMR, ¹³ C NMR, IR spectrophotometer, UV-VIS spectrophotometer, TLC, HPLC, GC-MS-MS etc. which showed very strong growth inhibitory effect on several weeds such as Parthenium histerophorus, Ipomoea, Ischaemum rogusum, Vicia sativa, Echinochloa colona, Convolvulus arvensis, etc. even at concentration of 1%. This study revealed that triterpenoide molecules isolated from plants may serves as a potential template for preparation of new synthetically and herbicidal molecules for control of broad spectrum of weeds.

·Isolated allelochemicals from root exudates of some plants that can control Parthenium histerophorus, Ischaemum rogusum, Vicia sativa, Echinochloa colona, Convolvulus arvensis, phlariuis minor etc. control at 1 ppm to 10 ppm dose.

·I have developed various methods to analyze herbicide residues from different matrixes by Spectrophotometer, GC and HPLC. I have also developed various protocols to study the leaching behaviour of herbicides and risk of ground water pollution by herbicides.