Effect of Fungicide and Timing of Application on Management of Phoma Black Stem of Cultivated Sunflowers in the United States.

Phoma black stem (PBS), caused by Boerema (teleomorph Frezzi), is the most common stem disease of sunflower ( L.) in the northern Great Plains region of the United States. However, the impact of PBS on sunflower yield in the United States is unclear, and a near complete absence of information on the impact of fungicides on disease management exists.

Management of Soybean Cyst Nematode and Sudden Death Syndrome with Nematode-Protectant Seed Treatments Across Multiple Environments in Soybean.

As soybean () production continues to expand in the United States and Canada, so do pathogens and pests that directly threaten soybean yield potential and economic returns for farmers. One such pathogen is the soybean cyst nematode (SCN; ). SCN has traditionally been managed using SCN-resistant cultivars and rotation with nonhost crops, but the interaction of SCN with sudden death syndrome (SDS; caused by ) in the field makes management more difficult.

Ascochyta blight in North Dakota field pea: the pathogen complex and its fungicide sensitivity.

Worldwide, Ascochyta blight is caused by a complex of host-specific fungal pathogens, including , , and . The application of foliar fungicides is often necessary for disease management, but a better understanding of pathogen prevalence, aggressiveness, and fungicide sensitivity is needed to optimize control. Leaf and stem samples were obtained from 56 field pea production fields in 14 counties in North Dakota from 2017 to 2020 and isolates were collected from lesions characteristic of Ascochyta blight.

Application of image processing and transfer learning for the detection of rust disease.

Plant diseases introduce significant yield and quality losses to the food production industry, worldwide. Early identification of an epidemic could lead to more effective management of the disease and potentially reduce yield loss and limit excessive input costs. Image processing and deep learning techniques have shown promising results in distinguishing healthy and infected plants at early stages.

Foliar Fungicides Containing FRAC 11 Mitigate Phomopsis Stem Canker in Sunflower ().

Phomopsis stem canker reduces yield of sunflower ( L.) up to or exceeding 40%; however, management recommendations have not been developed for U.S.