Determining the Distribution of QoI Fungicide-Resistant on Soybean from Indiana.

Frogeye leaf spot (FLS) is a foliar disease of soybean () caused by . Application of fungicide products that contain quinone outside inhibitor (QoI) active ingredients has been one of the major tools used in the management of this disease, but, since 2010, QoI-resistant isolates have been confirmed in over 20 states in the United States, including Indiana. In summer 2019 and 2020, 406 isolates of were collected from 32 counties across Indiana and screened for QoI resistance using a PCR-restriction fragment length polymorphism (RFLP) method.

Identification of Quinone Outside Inhibitor Fungicide-Resistant Isolates of from Illinois and Kentucky.

Stagonospora leaf and glume blotch, caused by is a major disease of winter wheat () in the United States capable of significantly reducing grain yield and quality. Pathogens such as that overwinter in crop residue are often an increased concern in cropping systems that utilize no-till farming. In addition, the lack of wheat cultivars with complete resistance to has led to the reliance on foliar fungicides for disease management.

Identification of Isolates from Soybean with Resistance to Quinone Outside Inhibitor Fungicides.

Brown spot, caused by , is a common foliar disease of soybean (). Applications of fungicide products that contain quinone outside inhibitor (QoI) active ingredients to soybean fields have contributed to the selection and development of QoI-resistant populations of . We investigated the molecular mechanisms of QoI-resistance in these populations through targeted analysis of the cytochrome gene.

Reduction of Pythium Damping-Off in Soybean by Biocontrol Seed Treatment.

spp. is one of the major groups of pathogens that cause seedling diseases on soybean, leading to both preemergence and postemergence damping-off and root rot. More than 100 species have been identified within this genus, with , , var , and being particularly important for soybean production given their aggressiveness, prevalence, and abundance in production fields.

Survival of under dry soil conditions.

, a root-lesion nematode, depends on host plants for growth and survival. Weeds, volunteer plants, and crop root residues may act as reservoirs for the parasite in the field, but little is known about the ability of to survive in the absence of a host. This study aimed to evaluate survival and infectivity in artificially and naturally infested soil under dry conditions.