College of Agriculture & Natural Resources Department of Horticulture

Joined Department

July 2019

Appointment

• 50% Extension
• 35% Research
• 15% Teaching

Education

• PhD  University of Florida (Horticultural Sciences)
• MS  (Botany) University of Calcutta, India
• BS   (Botany Honors) Presidency College, University of Calcutta, India

Research

Dr. Saha investigates different chemical and non-chemical strategies for an effective weed control in ornamental crop production. Debalina has conducted studies and published results on herbicides and mulch combinations and their effects on different weed species in nursery and greenhouse container production systems, effects of strategic fertilizer placements in weed control for container production, evaluating different herbicide efficacies, studying different allelopathic properties of mulch extracts and their effect on weed control, and evaluating effects of different herbicide formulations and their cost effect in nursery production.

Current Projects in the Saha Lab

(1) With grants from Michigan Department of Agriculture & Rural Development (MDARD) and Western Greenhouse Association (WMGA), Debalina and her doctoral student, Manjot Kaur Sidhu are investigating how to control liverwort infestation of container-grown ornamentals in nurseries and greenhouses.

(2) With a grant from Michigan Nursery and Landscape Association (MNLA), Debalina, her cooperators, and her graduate students are determining the efficacy of different liquid formulations of herbicides (or their combinations) for control of large crabgrass and common ragweed and are determining the effectiveness of the older herbicide formulations versus the newer herbicides at reducing and eradicating these problematic weed species that have proliferation in MI nursery fields/containers.

(3) Weed competition within a restricted area such as within a container is important to study whether it affects the growth and development of ornamental plants or not. With the grant from MSU Project GREEEN, Debalina with her masters student, Greeshmanth Alluri is conducting trials on weed competition within container-ornamental shrubs. 

(4) Several ornamental crop safety trials where phytotoxicity are being tested of different new chemicals (such as herbicides and fungicides) for their registration purpose are being conducted. These trials are being funded by USDA IR4.

(5) Dr. Saha also conducts several herbicide chemical company trials and projects for their new products and writes technical reports for the industries.

Extension

Debalina gives talks to state, regional, and national conferences/meetings and associations related to green industry. She is highly involved with Michigan Christmas Tree Association (MCTA), Michigan Nursery and Landscape Association (MNLA), and Western Greenhouse Association (WMGA) in the state of Michigan. She often writes trade journal articles for Great Lakes Christmas Tree journal, The Michigan Landscape, Greenhouse Product News (GPN), and Nursery Management. In addition, to these, she publishes several MSU extension bulletins (series), newsletter, factsheets for identification and management of specific problematic weed species in nurseries, greenhouses, and Christmas tree production. Recently, Dr. Saha has become one of the team members of e-GRO (Electronic Grower Resources Online) which is a collaborative effort of floriculture specialist to create a new clearing house for alerts about disease, insect, weeds, environment, physiological and nutritional disorders being observed in commercial greenhouses.

Teaching

Dr. Saha has 15% teaching appointment. She teaches PLB/HRT863 Environmental Plant Physiology (graduate level course) every odd Spring semester.

Team Personnel

Current Graduate Students

Manjot Kaur Sidhu (Ph.D. student): Spring 2020- present

Greeshmanth Alluri (M.S. student): Fall 2022- present

Supti Saha Mou (Ph.D. student): Spring 2024- present

Past Graduate Students

Greta Gallina (M.S. student): graduated, December 2022; pursuing Ph.D. at University of Georgia

Undergraduate Researchers

Michael Lucas, IAT Research Intern, Summer 2023

Rachel Mickey, Undergraduate Research Assistant, Summer 2023

McKinleigh Cordhal, Undergraduate Research Assistant, Summer 2022

Shriya Kethireddy, Undergraduate Research Assistant, Summer 2022

Ashley Jeon, Undergraduate Research Intern, Summer 2021 & Fall 2021

Technical Assistant

Carolyn Fitzgibbon (B.S.) Research technical aide, 2020- present

Publications

Peer-reviewed publications:

Graduate student author underlined.

Gallina, G., B.M. Cregg, E.L. Patterson, E. Hill, and Saha. 2023. Alternative integrated weed management options for clopyralid-resistant common ragweed. Horticulturae 9 (9), 985 doi: https://doi.org/10.3390/horticulturae9090985

Gallina, G., B.M. Cregg, E.L. Patterson, and Saha. 2023. Developing integrated strategies to address emerging weed management challenges in Christmas tree production. Forests 14 (5), 881.

Gallina, G., B.M. Cregg, E.L. Patterson, and D. Saha. 2022. A review of chemical weed control practices in Christmas tree production in the United States. Forests 13 (2), 250. https://doi.org/10.3390/f13020250.

Saha, D., B.M. Cregg, and M.K. Sidhu. 2020. A review of nonchemical weed control practices in Christmas tree production. Forests 11, 554; doi:10.3390/f11050554

Sidhu, M.K., R. Lopez, S. Chaudhari, and D. Saha. 2020. A review on common liverwort control in nurseries and greenhouses. HortTechnology 30(4):471-479; doi: https://doi.org/10.21273/HORTTECH04652-20

Saha, D., C. Marble, B.J. Pearson, H.E. Perez, G.E. MacDonald, and D.C. Odero. 2019. Short-term preemergence herbicide adsorption by mulch materials and impacts on weed control. HortTechnology 1-9 doi: https://doi.org/10.21273/HORTTECH04432-19

Saha, D., C. Marble, B.J. Pearson, H.E. Perez, G.E. MacDonald, and D.C. Odero. 2019. Emergence of garden spurge (Euphorbia hirta) and large crabgrass (Digitaria sanguinalis) in response to different physical properties and depths of common mulch materials. Weed Technology 1-8 doi:10.1017/wet.2019.88.

Saha, D., C. Marble, N. Torres, and A. Chandler. 2019. Fertilizer placement affects growth and reproduction of three common weed species in pine bark-based soilless nursery substrates. Weed Science 1-7 doi:10.1017/wsc.2019.49.

Marble, S.C., S.T. Steed, D. Saha, and Y. Khamare. 2019. On-farm evaluations of wood-derived, waste paper, and plastic mulch materials for weed control in Florida container nurseries. HortTechnology 1-8 doi:10.21273/HORTTECH04437-19.

Saha, D., C. Marble, B.J. Pearson, H.E. Perez, G.E. MacDonald, and D.C. Odero. 2019. Influence of mulch type and depth, herbicide formulation, and post-application irrigation volume on control of common landscape weed species. HortTechnology 29:65-77.

Saha, D., C. Marble, and A. Chandler. 2018. Early postemergence control of bittercress (Cardamine flexuosa With.) and oxalis (Oxalis stricta L.) with dithiopyr and isoxaben combinations. Journal of Environmental Horticulture 36(3): 114-118.  http://hrijournal.org/doi/full/10.24266/0738-2898-36.3.114.

Saha, D., C. Marble, and B.J. Pearson. 2018. Allelopathic effects of common landscape and nursery mulch materials on weed control. Frontiers in Plant Science 9:1-8.  doi:10.3389/fpls.2018.00733.

Saha, D., C. Marble, C. Stewart, and A. Chandler. 2017. Preemergence and postemergence control of Artillery weed (Pilea microphylla) in container nurseries and landscapes. Weed Technology 31(4): 574-581.

Trade Journal Publications:

Saha, D. 2024. Yellow woodsorrel: An important weed species to control in container-grown ornamental production. The Michigan Landscape. (inprint)

Alluri, G. and Saha. 2024. Managing herbicide resistance development among wed species. The Michigan Landscape 67(1) 27-29.

Saha, D. 2024. Biology and management of Johnsongrass (Sorghum halapense) in Christmas tree production. Great Lakes Christmas Tree Journal 20(1) 42-44.

Saha, D. 2023. Biology and management of Poison ivy (Toxicodendron radicans) in Christmas tree production. Great Lakes Christmas Tree Journal 19(4) 42-43.

Saha, D. 2023. Biology and management of Velvetleaf (Abutilon theophrasti) in Christmas tree production. Great Lakes Christmas Tree Journal 19(3) 42-43.

Saha, D. 2023. Biology and management of Fall panicum (Panicum dichotomiflorum) in Christmas tree production. Great Lakes Christmas Tree Journal 19(2) 42-43.

Saha, D. 2023. Biology and management of wild carrot (Daucus carota) in Christmas tree production. Great Lakes Christmas Tree Journal 19(1) 38-39.

Saha, D. 2022. Biology and management of Eastern black nightshade (Solanum ptycanthum) in Christmas tree production. Great Lakes Christmas Tree Journal 18(4):44-45.

Saha, D. 2022. Biology and management of barnyardgrass (Echinochloa crus-galli) in Christmas tree production. Great Lakes Christmas Tree Journal 18(3): 36-37.

Saha, D. 2022. Biology and management of yellow nutsedge (Cyperus esculentus) in Christmas tree production. Great Lakes Christmas Tree Journal 18(2): 36-37.

Saha, D. 2022. Biology and management of hoary alyssum (Berteroa incana) in Christmas tree production. Great Lakes Christmas Tree Journal 18(1): 40-41. 

Saha, D. 2021. Biology and management of large crabgrass (Digitaria sanguinalis) in Christmas tree production. Great Lakes Christmas Tree Journal 17(4): 44-45. 

Saha, D. 2021. Biology and management of Horseweed (Conyza canadensis) in Christmas tree production. Great Lakes Christmas Tree Journal 17(3):38-40.

Saha, D. 2021. Biology and management of field bindweed (Convolvulus arvensis) in Christmas tree production. Great Lakes Christmas Tree Journal 17(2): 38-40.

Saha, D. 2021. Biology and management of common ragweed (Ambrosia artemisifolia L.) in Christmas tree production. Great Lakes Christmas Tree Journal 17(1): 40-42.

Saha, D. 2021. Controlling weeds in container production: Can growers control weed growth in container production? Greenhouse Product News (GPN) 31(1):30-33 http://digital.gpnmag.com/i/1322476-january-2021/0?

Saha, D. H. Lindberg, and M.K. Sidhu. 2020. Weed ID: Learn how to manage liverwort in nurseries and greenhouses. Nursery Management http://magazine.nurserymag.com/article/august-2020/weed-control-managing-liverwort-weed-id.aspx. 

Saha, D. 2020. Top three problematic weeds of Michigan nursery container production. The Michigan Landscape 63(3):25-28.

Saha, D. 2020. Managing birdeye pearlwort in Michigan's nursery container production. The Michigan Landscape 63(2):48-51.

Saha, D., H. Lindberg, and M.K. Sidhu. 2020. Identification and management of liverwort in greenhouses. Electronic grower resources on-line (e-grow) vol 9.03. 

http://www.e-gro.org/pdf/2020_903.pdf

Saha, D. 2020. Chemical weed control strategies for nurseries and landscapes: Part II. The Michigan Landscape 63(1):44-46.

Saha, D. 2019. Nonchemical weed control strategies for nurseries and landscapes: Part I. The Michigan Landscape 62(6):39-41.

Saha, D. 2019. Top three problematic weeds of Christmas tree plantations in great lake regions. Great Lakes Christmas Tree Journal 15 (4): 28-30.

Other Extension Publications:

Fitzgibbon, C. and Saha. 2023. Nostoc: The slimy weed of greenhouse. Electronic grower resources on-line (e-GRO) vol 12. 29   https://e-gro.org/pdf/2023-12-29.pdf

Saha. 2023. Common groundsel: A problematic weed species. Electronic grower resources on-line (e-GRO) vol 12. 26 https://e-gro.org/pdf/2023-12-26.pdf

Saha, D. and K. Sidhu. 2023. Controlling spotted spurge in greenhouse container production. Electronic grower resources on-line (e-GRO) vol 12. 19 https://egro.org/pdf/2023-12-19.pdf

Saha, D. Controlling yellow woodsorrel in greenhouse container production. Electronic grower resources on-line (e-GRO) vol 11.30 https://www.e-gro.org/pdf/2022-11-30.pdf

Saha, D. and K. Sidhu. 2022. Identification and management of hairy bittercress in greenhouses. Electronic grower resources on-line (e-GRO) vol 11.23 http://www.e-gro.org/pdf/2022-11-23.pdf

Saha, D., Lindberg, and M.K. Sidhu. 2020. Identification and management of liverwort in greenhouses. Electronic grower resources on-line (e-GRO) vol 9.03 http://www.e-gro.org/pdf/2020_903.pdf

Saha, D., C. Marble, S. Steed, and N.S. Boyd. 2019. Biology and management of Yellow (Cyperus escuelentus) and Purple Nutsedge (C. rotundus) in ornamental crop production and landscapes, ENH 1305. University of Florida Institute of Food and Agricultural Sciences EDIS http://edis.ifas.ufl.edu/ep569

Laughinghouse IV, H.D., D.E. Berthold, C. Marble, and D. Saha. 2019. Biology and management of Nostoc (Cyanobacteria) in nurseries and greenhouses, SS-AGR-431. University of Florida Institute of Food and Agricultural Sciences EDIS. https://edis.ifas.ufl.edu/ag430

Saha, D., C. Marble, R.H. Stamps, S. Steed, and N.S. Boyd. 2016. Biology and management of ragweed parthenium (Parthenium hysterophorus L.) in ornamental crop production, ENH 1270. University of Florida Institute of Food and Agricultural Sciences EDIS. http://edis.ifas.ufl.edu/ep535

Saha, D., C. Marble, S. Steed, and N.S. Boyd. 2016. Biology and management of Pilea microphylla (Artillery weed) in ornamental crop production, ENH 1272. University of Florida Institute of Food and Agricultural Sciences EDIS. http://edis.ifas.ufl.edu/ep531.