Kentucky Plant Disease Management Guide for Soybeans

This guide contains information on the biology and management of the most important diseases of soybeans in Kentucky. Fundamental information on symptoms, disease cycle, and management is provided. For some diseases, more extensive information on biology and management is also available in other Extension publications. Additional sources of information are listed under individual diseases. Disease management in soybeans relies heavily on using disease-resistant varieties, when available, and employing sound agronomic practices. It is important to integrate both of these strategies into a comprehensive disease management program. Failure to consider one or the other will compromise the success of your efforts. The appropriate use of pesticides sometimes plays a significant role in managing certain diseases, but it is secondary to sound cultural practices and proper variety selection. Resistance to one or more diseases is often incorporated into modern crop varieties. Unfortunately, resistance is not available for some diseases. However, when available, disease resistance is often the foundation for economical disease control

The Impacts of an Entrepreneurial Course on Secondary Students\u27 Entrepreneurial Self-Efficacy and Entrepreneurial Intentions

There is considerable agreement that promoting entrepreneurship stimulates economic development and job creation, which helps maintain a country’s economic competitiveness. Entrepreneurship education is a key to increasing the likelihood of potential entrepreneurs. While substantial research has documented strategies for enhancing students\u27 entrepreneurial mindset and building entrepreneurial skills in higher education, entrepreneurship is rarely incorporated into or studied in secondary education. This mixed-method study examined the impact of an online ten-lesson entrepreneurship course on secondary students\u27 entrepreneurial self-efficacy and entrepreneurial intentions. Students took a pre-survey that measured their entrepreneurial self-efficacy and intentions before the course and a post-survey upon completing the course. Students\u27 artifacts (elevator pitch frameworks and business canvas models) from the capstone lesson were collected. A paired-sample t-test compared students’ entrepreneurial self-efficacy and intentions before and after the course, and artifacts were analyzed using a rubric. Survey results showed significant improvements in two dimensions of entrepreneurial intentions: Professional Attraction and Entrepreneurial Capacity. Students\u27 entrepreneurial self-efficacy subscales (Searching, Planning, Marshaling) did not yield a significant improvement. The analysis of students\u27 artifacts showed that students could identify problems and generate solutions to their problems. However, students did not clearly understand how to project revenue based on a target market

Leaf Rust of Wheat

Leaf rust of wheat, caused by the fungus Puccini recondita f. sp. tritici, can cause heavy yield losses in wheat. Growers frequently underestimate the losses caused by leaf rust because the disease never destroys an entire crop in Kentucky and seldom causes severe shriveling of the grain. Yet the disease reduces the number of Kernels per head, as well as grain test weight. Grain from severely rusted plants is also lower in protein content. Some leaf rust occurs in the state every year, but variations in the weather and the amount of rust overwintering in the southern states produce large year-to-year differences in leaf rust development. Yield loss is most severe when the disease occurs early in the spring on susceptible varieties and continue until the crop is mature

Corn Stalk Rots

Stalk rots are the most common diseases of dent corn in Kentucky. It is estimated that these diseases reduce annual yields by a minimum of 3 percent. In certain years, yield losses may reach 10 to 20 percent. Losses are due to (1) premature plant death which results in poor filling of ears or light test weights for the grain, and (2) harvest losses associated with stalk breakage or lodging. Furthermore, problems with ear rot are usually greater where lodging occurs, particularly when the harvest season is wet

Gray Leaf Spot of Corn

Gray leaf spot of corn, while of little consequence in the US before 1970, has become a major concern to many corn producers in recent years. Serious outbreaks of the disease first occurred in the early to mid 1970s in low-lying areas in the mountainous regions of Kentucky, North Carolina, Tennessee and Virginia. Since this time, the disease has spread to most corn-producing areas of western Kentucky and parts of Delaware, Illinois, Indiana, Iowa, Maryland, Missouri, Ohio, Pennsylvania and west Tennessee

Kentucky Plant Disease Management Guide for Corn and Sorghum

This guide contains information on the biology and management of the most important diseases of corn and sorghum in Kentucky. Fundamental information on symptoms, disease cycle, and management is provided. For some diseases, more extensive information on biology and management is also available in other Extension publications. Additional sources of information are listed under individual diseases. Disease management in corn and sorghum relies heavily on using disease-resistant hybrids and employing sound agronomic practices. It is important to integrate both of these strategies into a comprehensive disease management program. Failure to consider one or the other will compromise the success of your efforts. The appropriate use of pesticides sometimes plays a significant role in managing certain diseases, but it is secondary to sound cultural practices and proper hybrid selection. Resistance to one or more diseases is often incorporated into modern crop hybrids. Unfortunately, resistance is not available for some diseases. However, when available, disease resistance is often the foundation for economical disease control

Gray Mold of Strawberry

Several fungi can cause developing and ripe strawberries to rot. In Kentucky the most common and economically important of these diseases is gray mold, caused by the fungus Botrytis cinerea. Also called Botrytis rot or ash mold, it is an ever-present threat to strawberries both in the field and after harvest. It can be particularly devastating because the disease strikes after investments in the crop have been made, but before returns have been fully realized

Kentucky Plant Disease Management Guide for Small Grains

This guide contains information on the biology and management of the most important diseases of small grains (wheat and barley) in Kentucky. Fundamental information on symptoms, disease cycle, and management is provided. For some diseases, more extensive information on biology and management is also available in other Extension publications. Additional sources of information are listed under individual diseases. Disease management in small grains relies heavily on using disease-resistant varieties and employing sound agronomic practices. It is important to integrate both of these strategies into a comprehensive disease management program. Failure to consider one or the other will compromise the success of your efforts. The appropriate use of pesticides sometimes plays a significant role in managing certain diseases, but it is secondary to sound cultural practices and proper variety selection. Resistance to one or more diseases is often incorporated into modern crop varieties. Unfortunately, resistance is not available for some diseases. However, when available, disease resistance is often the foundation for economical disease control

The role of variation in genetic susceptibility to soybean rust on the photosynthetic competence of infected leaves.

Three soybean rust infection types have been reported: 1) tan lesions indicate a compatible and susceptible reaction, 2) red- brown (RB) lesion type has been associated with few non-sporulating uredinia representing a resistant reaction, and 3) immune reaction with no visible evidence of infection. Differences among cultivars would imply genotypic differences in tolerance, which can be define as the ability of the host to endure the presence of the pathogen with reduced disease symptoms and/or damages. Soybean rust-induced yield loss has been associated with reduction in light interception due to premature leaf loss and the lesions on the remaining green leaves. Incorporation of the effect of the pathogen on photosynthetic efficiency of disease leaves from different soybean cultivars in model to predict production might increase the accuracy and precision of the estimates supply by this model. Bastiaans (1991) proposed the concept of a "virtual lesion" and developed a simple model Y= (1-x)? to fit empirical data and describe the relationship between the reduction in relative photosynthesis in a diseased leaf (Y), and the disease severity (x). The value of â indicates whether the effect of disease on photosynthesis is higher (? > 1), lower (? < l) or equal (? = 1) to that accounted for by the observed diseased area. Reliable estimate of disease effects on growth and yield depends on the ability to accurate quantify the parameter ?. The objective of the current study was to determine the role of host-plant variation in disease susceptibility on soybean leaf gas exchange in field and control environment studies. The specific objectives are to quantify the ? value for SBR-infected leaves as influenced by plant growing conditions and genetic variation in disease susceptibility.Edição do Proceedings of the National Soybean Rust Symposium, New Orleans, 2009

Oncology Practice during the COVID-19 Pandemic

In just a few short weeks, the coronavirus disease 2019 (COVID-19) pandemic has transformed health care delivery around the globe. The crisis has dismantled how care is delivered and forced clinicians to make difficult triage decisions about what types and components of care have limited immediate value and which are essential for optimal outcomes. Because some malignancies could pose an immediate threat to survival, cancer provides a lens into the major shifts currently underway in clinical care. Cancer and cancer-related treatments frequently cause immunosuppression, and patients with cancer have excess mortality risk from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The magnitude of this risk is not yet known but early reports suggest a substantial increased risk of death associated with COVID-19 infection among patients with cancer, perhaps highest among those older than 60 years and those with pulmonary compromise