Geostatistical modelling improves prediction of abundance and distribution in soybean fields.

Charcoal rot, caused by the soilborne fungus (Mp) poses a serious threat to soybean health and harvests at a global scale. Mp exhibits varying distribution patterns across fields, which complicates our ability to predict disease occurrences and outbreaks. Therefore, determining the spatial distribution of Mp abundance and its relation with soil physicochemical properties would help to inform precision management decisions for mitigating charcoal rot.

Interactions Among , , and Soybean Genotype.

, the soybean cyst nematode (SCN), and fungal pathogen are economically important soybean pathogens that may coinfest fields. Resistance remains the most effective management tactic for SCN, and the resistance allele derived from plant introduction 88788 is most commonly deployed in the northern United States. The concomitant effects of SCN and on soybean performance, as well as the effect of the allele in two different genetic backgrounds, were evaluated in three environments (during 2013 to 2015) and a greenhouse bioassay.

Sampling Depth and Crop Growth Stage Affect Estimates of the Population Density of Lesion Nematodes ( spp.) in Corn Fields in Ohio.

The effects of sampling depth and crop growth stage on the population density of lesion nematodes were investigated in three commercial fields in Wayne and Fulton Counties, Ohio, during the 2016 and 2017 growing seasons. Soil samples were collected at five growth stages by removing 15 soil cores to a depth of 70 cm from each of 25 plots per field-year. Cores were divided into seven 10-cm sections, and nematodes were extracted from the soil and root fractions of each of them.

Giant Starship Elements Mobilize Accessory Genes in Fungal Genomes.

Accessory genes are variably present among members of a species and are a reservoir of adaptive functions. In bacteria, differences in gene distributions among individuals largely result from mobile elements that acquire and disperse accessory genes as cargo. In contrast, the impact of cargo-carrying elements on eukaryotic evolution remains largely unknown.

Evaluation of the Combined Effect of and on Soybean Yield in Naturally Infested Fields with Spatial Regression Analysis and in Greenhouse Studies.

, the soybean cyst nematode, and , causal agent of charcoal rot, are economically important soybean pathogens. The impact and effect of these pathogens on soybean yield in coinfested fields in the Midwest production region is not known. Both pathogens are soilborne, with spatially aggregated distribution and effects.