Life Sciences Commons^™

Nf05-633 Soybean Rust: How Great Is The Threat For Nebraska?, Loren J. Giesler

University of Nebraska-Lincoln Extension: Historical Materials

Soybean rust is a serious foliar disease that has caused significant crop losses in other parts of the world. It was first detected in the United States in November 2004 and has since been identified in several southeastern states. The fact that wind-borne spores principally spread soybean rust suggests it will be a seasonal problem in Nebraska.

This NebFact discusses the symptoms, life cycle, host range, potential impact on soybean production, and management of soybean rust in the state of Nebraska.

G97-1330 Apple Scab, Diane A. Merrell, Donald Steinegger

University of Nebraska-Lincoln Extension: Historical Materials

Apple scab, caused by the fungus Venturia inaequallis, occurs worldwide wherever apples are grown. Scab is one of the most important diseases of apples and crabapples in Nebraska.

This NebGuide discusses the apple scab disease, its symptoms, disease cycle, and cultural and chemical control. Varieties of apples and crabapples are listed according to their degree of resistance.

G74-202 Wheat Soil-Borne Mosaic Disease (Revised October 2001), John E. Watkins

University of Nebraska-Lincoln Extension: Historical Materials

Host range, symptoms, disease cycle, and control options for wheat soil-borne mosaic disease are discussed.

Wheat soil-borne mosaic virus affects wheat (Triticum aestivum L.) growing primarily in central, eastern and west central Nebraska. This disease occurs annually; however, its effect on crop production in Nebraska varies from year to year due to variety selection, cropping practices and environmental conditions favoring disease development. In years when spring temperatures remain cool for extended periods, the virus remains active in infected plants, enhancing symptom development and increasing yield loss. The virus reduces tillering and affects kernel weights and test weights.