PLP Seminar Series Monday 24 February 2025

February 24, 2025 1:30PM - 2:30PM 1:30-2:30

PSSB 271 Conference Room

https://msu.zoom.us/j/94159442429 

Meeting ID: 941 5944 2429

Passcode: PLP

ASSESSMENT OF COVER CROPS FOR NEMATODE MANAGEMENT IN POTATO AND EFFECT OF CO-INOCULATION OF NEMATODE AND FUNGAL PATHOGENS ON FIELD PEA
Presenter: Matthew John

Abstract: Plant-parasitic nematodes limit the production of major crops in the US. This seminar presents two research projects on plant-parasitic nematodes associated with potato and field pea. Seventeen cover crops and two seed meals were evaluated for the hosting and reproductive abilities to the root lesion nematode, Pratylenchus penetrans. The results showed that alfalfa cultivars (Vernema, FSG 527, Vernal, and Signature), annual ryegrass cultivars (Tetilia and Gulf), and potato (Castle Russet) consistently reduced the nematode populations and were identified as poor hosts. The penetration of P. penetrans was examined at different time points on cover crops and potato cultivars. Results demonstrated that this nematode penetrated the roots of potato (Red Norland) at all the time points but no penetration was observed in the roots of alfalfa (FSG 527). The second project aimed to evaluate the effects of co-inoculation of the pin nematode Paratylenchus nanus type B and Fusarium avenaceum on plant growth and seed weight of field pea under controlled greenhouse conditions. The results indicate that co-inoculation of both pathogens at high levels severely impacted the growth and yield of field pea cultivar Ds admiral. At the high-level inoculum, co-inoculation of the two pathogens caused dry seed weight reductions ranging from 75% to 93% compared to the non-inoculated control across the trials at the final harvest. The findings from this study will contribute and help to develop management strategies to minimize yield loss in infested fields.

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