Dr. Bernard Zandstra has been a member of the Department of Horticulture at Michigan State University since 1977. His research with herbicides is an integral part of the information growers request year in and year out. He retired in 2019 but continues to conduct research as a professor emeritus while aiding Dr. Sushila Chaudhari in weed control research.
Ph.D., Horticulture, University of Hawaii, Honolulu, HI, 1976
M.S., Horticulture, University of Hawaii, Honolulu, HI, 1972
A.B., Political Science, Calvin College, Grand Rapids, MI, 1966
Trinity Christian College, Palos Heights, IL, 1964
Dr. Bernard Zandstra conducted research on weed control in fruit, ornamental, and vegetable crops. Dr. Zandstra authors the Michigan Weed Control Guide for Vegetable Crops bulletin and the weed control section of the Michigan Fruit Management Guide. He served as the Field Research Director of the IR-4 Center (National Program for Minor Use Registrations) at Michigan State University. Dr. Zandstra does weed control research on most vegetable crops, including asparagus, snapbean, carrot, celery, sweet corn, cruciferous crops, cucumber, edamame, herbs, lettuce, mint, onion, pepper, squash, and tomato. His research in fruit crops includes strawberry, apple, blueberry, cherry, grape, peach, and raspberry.
The BZ Crew
Commonly referred to as the 'BZ Crew' in and around the MSU Horticulture Farm, we pride ourselves on quality hard work that reflects Dr. Zandstra's dedication. We are a family oriented bunch, and welcome you to browse through the site and contact us with any questions.
Members of the Crew
- Nicole Soldan - IR-4 Research Program Assistant; Pesticide applicator
- Monique Hemker - Research Assistant - Weed Control; Pesticide applicator
- Carolyn Fitzgibbon - Research Aide - Weed Control; Pesticide applicator
The Herbicide/Weed database is an interactive tool to assist in herbicide selection. Users can select from multiple options, such as crop type and weed species, to determine which herbicides could help with their particular weed control needs.
This database is intended to be a resource for choosing herbicides: it is not a replacement for any information contained on labels. Always check product labels before applying herbicides to any crop.
The database can be accessed at: https://herbicides.hrt.msu.edu
PDF versions of herbicide and weed information
Annual Reports and Weed Control Guides
Recent Reports and Bulletins
Weed Control in Christmas Trees, 2015 - Extension Report # E-3237
Previous Annual Reports
2013 Muskmelon Trial Report (not in full report)
Altop, E.K., K. Haghnama, D. Sariaslan, C.J. Phillippo, H. Mennan, and B.H. Zandstra. 2016. Long-term perennial weed control strategies: Economic analyses and yield effect in hazelnut (Corylus avellana). Crop Protection 80:7-14
Altop, E.K., H. Mennan, C.J. Phillippo, and B.H. Zandstra. 2015. Effect of the burial depth and environmental factors on the seasonal germination of bearded sprangletop (Leptochloa fusca [L.] Kunth ssp. fascicularis [Lam.] N. Snow). Weed Management and Biology 15:147-158
Zandstra, B.H., C.J. Phillippo, W.R. Chase, N.M. Soldan, M.A. Goll. 2015. Weed control research on fruit and vegetable crops. Horticulture Report 79. Michigan State University.
Zandstra, B.H. 2015. 2016 Weed control guide for vegetable crops. MSUE Bulletin E-433.
Zandstra, B.H. 2015. Herbicides - weed control recommendations for fruit crops. IN Wise, J., et al. Michigan fruit management guide. MSUE Bulletin E-154.
Zandstra, B.H. and J. O'Donnell. 2015. Weed control in Christmas trees. MSUE Bulletin E-433.
Zandstra, B.H., C.J. Phillippo, W.R. Chase, N.M. Schroeder, M.A. Goll. 2014. Weed control research on fruit and vegetable crops. Horticulture Report 78. Michigan State University.
Zandstra, B.H. and J.J. Morrice. 2013. Maximum weed control in onion with pre- and postemergence herbicides. WSSA Abstracts 52:347.
Zandstra, B.H., S. Morse, R.V. Tocco, and J.J. Morrice. 2013. Response of asparagus to repeated applications of residual herbicides. HortTechnology 23(1).
Zandstra, B.H., C.J. Phillippo, W.R. Chase, N.M. Soldan, H.E. Sisson, N.M. Rowley. 2013. Weed control research on fruit and vegetable crops. Horticulture Report 77. Michigan State University.
Morrice, J.J. and B.H. Zandstra. 2012. Weed control in apple with old and new herbicides. NCWSS Proceedings 67:174.
Tocco, R.V. and B.H. Zandstra. 2012. Annual and perennial weed control in tree fruit with indaziflam, flumioxazin, rimsulfuron, halosulfuron, and flazasulfuron. WSSA Abstracts 52:205.
Zandstra, B.H. and J.J. Morrice. 2012. Pyroxasulfone for weed control in vegetable crops. NCWSS Proceedings 67:173.
Zandstra, B.H., J.J. Morrice, W.R. Chase, S. Morse, J. Becker. 2012. Weed control research on fruit and vegetable crops. Horticulture Report 76. Michigan State University.
Talley, C. and B. Zandstra. 2011. Cost of production of machine-harvested pickling cucumbers in Michigan 2010. MSU Extension Bulletin E-3166.
Zandstra, B. 2011. Postemergence weed control in Christmas trees. Great Lakes Christmas Tree Journal 6:12-15.
Zandstra, B., L.L. Wei, R. Tocco, C. Herrman. 2011. Preemergence weed control options in Christmas trees. Great Lakes Christmas Tree Journal 6:4-7.
Zandstra, B.H., and R.V. Tocco. 2011. Preemergence and postemergence herbicides for primocane-bearing raspberries. NCWSS Proceedings. 66:211.
Richardson, R.J. and B.H. Zandstra. 2009. Virginia creeper and wild grape control in Fraser fir. Weed Technology 23 (1):
Richardson, R.J. and B.H. Zandstra. 2009. Weed Control in Christmas trees with flumioxazin and other residual herbicides applied alone or in tank mixtures. HortTechnology 19(1):181-186.
Cisneros, J.J. and B.H. Zandstra. 2008. Flame weeding effects on several weed species. Weed Technology. 22:290-295.
Zandstra, B.H. and T.A. DeKryer. 2007. Arsenic and lead residues in carrots from foliar applications of monosodium methanearsonate (MSMA): a comparison between mineral and organic soils, or from soil residues. Food Additives and Contaminates 24(1):34-42.
Uhlig, R.E. G. Bird, R.J. Richardson, and B.H. Zandstra. 2007. Soil fumigants to replace methyl bromide for weed control in ornamentals. HortTechnology 17(1):111-114.
Onion weed control during cold weather
Published on May 7, 2021
Weed control after final harvest in asparagus
Published on June 24, 2020
New 2,4-D formulation offers greater safety for berries, tree fruit and nut tree crops
Published on May 28, 2020
Blueberry weed control updates for 2020
Published on May 5, 2020
Importance of spring herbicide application in fruit trees
Published on April 1, 2020
New Command 3 ME Supplemental Label approved by EPA
Published on August 7, 2019
New Zidua Supplemental Labels approved by EPA
Published on June 20, 2019
Onion weed control for 2019
Published on May 8, 2019
Renewed labels for onions and green onions
Published on April 23, 2019