Adventitious Rooting of Lavandula x intermedia Cuttings

Due to challenges associated with lavender propagation, Texas hybrid lavender (lavandin) growers require revised propagation information. Therefore, experiments investigated effects of media and plant growth regulators (PGR) on rooting of three different lavandin (Lavandula x intermedia) cultivars. PGRs applied to cuttings were naphthaleneacetic acid (NAA), or indole-3-butyric acid (IBA) at three concentrations. In addition, four rooting media were examined. Cuttings exposed to a peat moss/sand medium had the greatest mean overall rooting percentage, number of roots, and regardless of cultivar, cuttings exposed to the peat moss/sand medium had the longest roots. In general, mean rooting data were also greatest for cuttings dipped in NAA at 0.5 and 1.0 g·L−1 (500 and 1000 ppm, respectively). Overall, across all media and PGR treatments ‘Grosso' cuttings tended to have the greatest rooting percentage and longest roots. In addition, compared to the no PGR treatment, ‘Provence' and ‘Hidcote Giant' cuttings exposed to the peat moss/sand medium and greater PGR concentrations produced cuttings with an increased mean rooting percentage and longer roots. When rooting lavandin cultivars, results indicate correct media selection, PGR formulation, and PGR concentration determine propagation success. Index words: lavandin, Lavandula x intermedia Emeric ex Loisel, peat moss, perlite, rooting percentage, root quality, sand. Chemicals used in this study: indole-3-butyric acid (IBA; 0.5, 1.0, and 1.5 g.L−1); naphthaleneacetic acid (NAA; 0.5, 1.0, and 1.5 g.L−1). Species used in this study: ‘Grosso', ‘Provence', and ‘Hidcote Giant' lavandin (Lavandula x intermedia Emeric ex Loisel.).

Integrating Media Selection and Media Effects Using Decision Theory

Media psychology researchers seek to understand both why people choose certain media over others and how media influence cognitive, emotional, social, and psychological processes. A burgeoning body of literature has emerged in recent years describing media selection and media effects as reciprocally linked dynamic processes, but research approaches empirically investigating them as such have been sparse. In parallel, technological developments like algorithmic personalization and mobile computing have served to blur the lines between media selection and media effects, highlighting novel problems at their intersection. Herein, we propose an integrative approach for building an understanding of these processes rooted in decision theory, a formal framework describing how organisms (and nonbiological agents) select and optimize behaviors in response to their environment.

UTILIZING MAPS AS A LEARNING MEDIA FOR HISTORY SUBJECT AT SMA PGRI 2SERAM KAIRATU

It is expected that teachers can manage the use of learning media to support the learning process following the goal of education. The purpose of this study was to see the effectiveness of using maps as a learning media to solve the teachers’ difficulties in presenting the topics/materials in history subject. This research was conducted at SMA PGRI 2 Seram-Kairatu. This study used a qualitative research method with a descriptive approach. The description in this study was focused on describing the learning plan, media types, media selection, and the application of maps as learning media. The data obtained in this study included the results of observations, interviews, and documentation. Based on the research results, firstly, the teacher prepared a Lesson Plan (RPP) and Syllabus. Secondly, the teacher used maps as a medium of learning, especially in history subjects. Thirdly, the use of maps as learning media was following the topics/materials being taught. Thus, the conclusion of this study was that using maps as a learning media provided convenience for history teachers in explaining the material to students. In addition, the use of maps as learning media was adjusted to the material taught by the teacher.

Integrating Media Selection and Media Effects Using Decision Theory

Media psychology researchers seek to understand both why people choose certain media over others and how media influence cognitive, emotional, social, and psychological processes. A burgeoning body of literature has emerged in recent years describing media selection and media effects as reciprocally-linked dynamic processes, but research approaches empirically investigating them as such have been sparse. In parallel, technological developments like algorithmic personalization and mobile computing have served to blur the lines between media selection and media effects, highlighting novel problems at their intersection. Herein, we propose an integrative approach for building an understanding of these processes rooted in decision theory, a formal framework describing how organisms (and non-biological agents) select and optimize behaviors in response to their environment.