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- Author or Editor: Emily Hoover x
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This decision case concerns the need to make management decisions in a commercial apple orchard planted largely with `Haralson,' a russet-susceptible cultivar. The growers described in this situation had to decide whether applying GA4+7 for russet suppression was appropriate for their operation, given the financial, cultural and pesticide issues that required addressing. The case is intended for use in fruit production or other intermediate to advanced undergraduate horticulture courses and assumes a knowledge of basic perennial-crop production practices. Students assume the role of a decisionmaker in the complicated issue of orchard management.
Formative evaluation (pretesting) can lead to better working exhibits in public gardens. While many botanical gardens and arboreta will attest to the importance of using formative evaluation, it has not been used to develop exhibits for consumers with diverse disabilities. At the Clotilde Irvine Sensory Garden of the University of Minnesota Landscape Arboretum (Chanhassen, Minn.) we are interested in developing exhibits that meet the needs of audiences with disabilities. To that end in 2000, four comprehensive interpretive exhibits were pretested before the final exhibits were installed within the Clotilde Irvine Sensory Garden to determine the exhibits ability to teach concepts to all regardless of disability. The evaluation indicated these exhibits were physically accessible, but needed attention in specific areas to enhance their inclusiveness.
Horticulture students in an entry-level course (plant propagation) and an upper-level course (small fruit crop production) were assigned brief lecture-based writing tasks at the end of each class period. For the first 5 minutes of each subsequent class period, students divided into small groups to discuss their responses to the previous day s task and to generate questions related to the task topic. The class then reconvened as a whole for a question-and-answer session before the lecture was resumed. Students collected their task responses in a workbook that they turned in for experimental evaluation at the end of the quarter. When compared to previous and concurrent sections of the same courses, students engaging in the writing tasks more frequently posed questions in class, posed questions of increased complexity, and demonstrated improved ability to perform well on complex exam questions requiring integration and synthesis of information.
In Fall 1999, the University of Minnesota implemented a writing-intensive (WI) requirement for undergraduates. As part of the requirement, students must take one upper-division WI course in their major. As of Spring 2002, the environmental horticulture major through the Department of Horticultural Science had only one WI course in its entire curriculum. Teaching faculty were interviewed and syllabi were reviewed to gather information on what types of writing are currently being assigned and to discuss where more WI courses should be placed in the environmental horticulture curriculum in the future. These surveys and interviews revealed that the majority of classes require formal writing and that the majority of the faculty review or are willing to review a draft of an assignment, two key components of the WI requirement. Informal writing assignments are less common, indicating a deficient area of the curriculum. With slight modifications, many classes in the environmental horticulture curriculum can meet the requirements to become designated as WI. Faculty agreed that WI courses should be placed in upper-level, smaller classes that place less emphasis on production techniques or plant identification.
Focus groups and surveys were used to align volunteers' work with the mission and organizational objectives of the Minnesota Landscape Arboretum (MLA) at the University of Minnesota. In focus groups, a cross-section of volunteers discussed several issues, including how they could more directly contribute to the mission and organizational objectives of the institution. Staff were surveyed on their perceptions of the volunteer workforce, including their current use of volunteers. Focus groups and surveys proved to be valuable tools to approach programmatic changes in volunteer involvement at the MLA by providing a platform to discuss the areas where change is needed, as well as what kind of change should occur. Focus groups can be a key tool in involving volunteers, by allowing them to provide input on changes that directly affect them, in addition to furthering the understanding of volunteer needs and motivations.
Consumer demand for local and organic strawberries (Fragaria ×ananassa) is increasing. Growers who can meet this demand have a competitive edge in the direct-to-consumer market. Innovations in strawberry production for northern climates offer new opportunities for growers to meet the demand for local organic strawberries. Typically adopted for season extension, the use of poly-covered tunnels for crop protection provides other benefits including protection from adverse weather. Low tunnels are easy to install, low cost, temporary protective structures that are well-adapted for annual day-neutral strawberry production, and they are more space efficient than high tunnels for these low-stature crops. A range of specialty tunnel plastics that modify and diffuse light are available, but there is little information on how these influence strawberry plant growth and performance in the field. Our objectives were to determine the effects of experimental ultraviolet blocking and transmitting plastics on light and microclimate in low tunnel environments and assess differences in fruit yield and quality in the day-neutral strawberry cultivar Albion in an organic production system. This research was conducted on U.S. Department of Agriculture-certified organic land over 2 years, in 2016 and 2017. We found that ultraviolet intensity and daily light integral (DLI) were lower in covered plots than in the open field. Maximum daily temperatures were slightly higher in covered plots. Both ultraviolet-blocking and ultraviolet-transmitting plastics improved marketable fruit yield compared with the open-field control. Strawberries grown in the open-field treatment were lower in chroma than covered plots in 2017, and there was no difference in total soluble solids between treatments in either year. Low tunnel systems allow for increased environmental control and improved fruit quality and are well-adapted for day-neutral organic strawberry production systems.
Researchers have collected a considerable amount of data relating to apple (Malus ×domestica) cultivars and rootstocks over the past 30 years, but much of this information is not easily accessible. The long-term goal of our working group is to increase access to this information using online technology available through eXtension. In eXtension, researchers and extension personnel are developing a community of practice (CoP) to increase the quality and amount of online information for individuals interested in our work [referred to as a community of interest (CoI)]. For this project, our CoI is broadly defined as commercial apple producers, nursery professionals, county extension educators, Extension Master Gardeners, home gardeners, and consumers. Our CoP is developing diverse educational tools, with the goals of increasing productivity, profitability, and sustainability for commercial apple production. Additionally, we will provide other members of our CoI access to research-based, reliable information on the culture of apples. We chose to begin our focus on cultivars and rootstocks adapted to the eastern United States and will add other U.S. regions as our resources and interest in our project grows.