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Research by Dr. Marisol Quintanilla, Elisabeth Darling, Razieh Yazdani
In the second and final year of this project, Dr. Quintanilla expanded the number of Michigan wheat fields observed. The team took 1,500 samples across 30 wheat fields during their respective harvest times. The nematodes were isolated from the soil, as well as from 1-gram root samples.
Quintanilla’s research indicated that while the root lesion nematode (Pratylenchus spp.) was found in 90% of surveyed fields, in no location did it exceed the threshold of 200/100 cu. cm. of soil. Root lesion nematodes were more prevalent in wheat fields with sandy/loam soils vs. loam/clay soils.
Click below to review the 2023 final written report and data charts on this project.
Research by Dr. Marisol Quintanilla, Elisabeth Darling, Luisa Parrado, et al.
In 2022, Dr. Quintanilla undertook Michigan’s first-ever survey of the prevalence of common plant-parasitic nematodes in winter wheat. The survey took place in five Michigan wheat producing counties: Jackson, Oceana, Monroe, Sanilac and Tuscola.
Nematodes can be very damaging to wheat yields, and build up over time due to crop rotation and lack of nematicidal soil treatments. Using soil and root samples, Quintanilla’s team found seven common nematode genera in wheat fields. They reported that 73% of their root samples on these farms included root lesion nematodes, and that 100% of the Michigan wheat fields sampled had at least one root lesion nematode.
In the next step, individual nematodes were isolated with special focus on three root lesion nematode species. If future work is funded, the team would like to study root lesion nematode impacts in greenhouse conditions to learn which wheat varieties are more or less tolerant of the nematodes.
Click below to review the 2022 final written report on this project.
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The Michigan Wheat Program is a state-check off program voted in by the state’s wheat farmers to assess each bushel of wheat grown and sold. The funds from the program are utilized to further the wheat industry in the state benefitting the state’s nearly 8,000 wheat farmers who grow about 450,000 acres of wheat annually producing about a 40 million bushel crop.