First Report of Red Crown Rot of Soybean, caused by , in Missouri.

In July 2024, soybean (Glycine max) with symptoms of red crown rot, caused by Calonectria ilicicola, were observed in a commercial field with a history of corn-soybean rotation in Marion County, Missouri. Soybean were planted on May 12 and foliar symptoms including interveinal chlorosis and premature senescence, were visible on plants at the R3 growth stage with incidence estimated at 5% of the field. Reddish coloration was observed on the lower stem of symptomatic plants, along with reddish-orange globular perithecia measuring 300-500 µm in height and 250-350 µm in diameter, typical of C.

The Soybean Gene Encodes a TIR-NBS-LRR Protein that Confers Resistance to .

Soybean rust is an economically significant disease caused by the fungus that negatively impacts soybean ( [L.] Merr.) production throughout the world.

Identification of environmental factors that influence the likelihood of off-target movement of dicamba.

Background: Commercialization of dicamba-resistant soybean and cotton and subsequent post-emergence applications of dicamba contributed to at least 1.4 and 0.5 million hectares of dicamba-injured soybean in the United States in 2017 and 2018, respectively.

Molecular and physiological characterization of six-way resistance in an Amaranthus tuberculatus var. rudis biotype from Missouri.

Background: Previous research reported the first case of six-way herbicide resistance in a common waterhemp (Amaranthus tuberculatus var. rudis) biotype from Missouri, USA designated MO-Ren. This study investigated the mechanisms of multiple-resistance in the MO-Ren biotype to herbicides from six site-of-action (SOA) groups, i.