The Origin of the Problem: Characterization of Paraguayan , Causal Agent of Septoria Leaf Spot of Stevia, Based on Multilocus Sequence Analysis.

Septoria leaf spot is a significant disease affecting cultivated stevia, potentially reducing yields by > 50%. The disease is caused by , first identified in 1978 in Japan as a new pathogen of stevia. Understanding the origin of could clarify how it spread to new production areas.

Validation of Standard Area Diagrams to Estimate the Severity of Septoria Leaf Spot on Stevia in Paraguay, Mexico, and the United States.

Septoria leaf spot (SLS) affects stevia leaves, reducing their quality. Estimates of SLS severity on different genotypes are made to identify resistance and as a basis to compare management approaches. The use of standard area diagrams (SADs) can improve the accuracy and reliability of severity estimates.

First Report of Macrophomina euphorbiicola Causing Charcoal Rot of Stevia in Paraguay.

Stevia ( [Bertoni] Bertoni) is a perennial plant originating in Paraguay. Stevia is primarily cultivated for the production of non-caloric sweeteners. In December 2018, wilted stevia cv.

Anaerobic Soil Disinfestation Reduces Viability of and Sclerotia and Root-Knot Nematodes in Muck Soils.

Experiments were conducted to evaluate potential functional and mechanistic differences in the suppression of and and root-knot nematodes in muck soils by anaerobic soil disinfestation (ASD) using different carbon source amendments. Volatile compounds produced during ASD in muck soil amended with molasses, wheat bran, or mustard greens at 20.2 Mg/ha or a 2% ethanol solution significantly reduced the mycelial growth and number of sclerotia produced by both spp.