Safe Use of Pesticides

Safe use of pesticides fact sheet addresses what pesticides are, dangers of pesticides, reason to use pesticides, testing of pesticides, allergies in people, and general safety precautions

Planting Corn in South Dakota

Guide to planting corn in South Dakota discusses where to plant, maturity date, plant population, narrow rows, soil fertility, weed and insect control, planting date, area recommendations, and irrigated areas

Media Habits of Students at South Dakota State University

A number of researchers have studied the media habits of the general public. They have examined the habits of adults, teenagers and numerous other groups. Only a few researchers have examined the college-aged group, a group which includes both teenagers and adults, and which may reflect unique patterns of media use. This study was designed to examine the news media used by selected subgroups of the college population. The population from which the subjects were chosen for this study included students who were enrolled at South Dakota State University in the fall semester of 1980. The purpose of this study was to examine media consumption of international, national, state and local news by South Dakota State University students. The study investigated student perceptions of completeness, fairness, and believability of media news sources. The time spent by students as consumers of media was an included variable. This study excluded student preference for specific stations, newspapers and magazines. The research focused on the particular medium being utilized. The study attempted to isolate distinctive patterns of media news consumption among selected student population groups. The research tested the following hypothesis relative to all news and specifically to international, national, state and local news. This author has been involved with the media for more than nine years. In that time this researcher has come in contact with a number of different persons who have been interested in sources of news for the college student. The question has been asked of this author many times: When one wants to influence the college student, is it best to use radio, television, or the print media? As one regarded as an expert by persons not involved in the media, this author has had a difficult time answering that question. Also, this researcher as an undergraduate at South Dakota State University lived at home and did not have to change media habits as do most college students. The study was conducted at South Dakota State University, a school with approximately 6500 students in a midwestern town with a population of between 15,000-20,000. This research can be used in cities and colleges of similar size that are also located in the midwest, and data gathered can be compared to information in this study. This research provided insight into college students\u27 use of the media

Responses of Oats and Barley to 2.4-Dichlorophenoxyacetic Acid (2.4-D)

At the time this experiment was initiated, there was much information concerning the effect of 2.4-D on weeds, but little on the effect of the growth-regulator on agronomic crops. Since that time, however, several agronomic and horticultural crops have been tested

The Relationship Between Sociological and Biographical Variables and Self-Concept Scores of Four- and Five-year Old Children

The purpose of this study was to provide information concerning factors that could relate to the self-concept development of four-and five-year old children. The factors studies were: age, sex, birth order family size, socioeconomic status, whether or not the child had attended nursery school, day care, or Head Start, how long the child had attended the preschool program, and the type and quality of the preschool environment

Characterization of Memphis 37 strain of human respiratory syncytial virus in neonatal lambs

Respiratory syncytial virus (RSV) is the most frequent cause of bronchiolitis in infants and children worldwide. Many animal models including rodents and several other species have been utilized to study RSV, but most studies investigate disease in adult animals and fail to address the unique physiology and immunology that makes infants more susceptible to severe disease. Our group and others have used the perinatal lamb to model infant RSV disease as lambs have a similar pulmonary development and are susceptible to RSV. Lambs develop mild clinical symptoms including fever, tachypnea, and malaise as well as mild to moderate gross and histologic lesions when experimentally infected with bovine or human RSV; preterm lambs develop more severe disease with bRSV. The lamb model has a strong foundation and forms a valid model for moderate disease as evidenced by clinical alteration of respiration as well as gross and histologic lesions, but there is need for a model of more severe disease. Human RSV A2 strain replicates in lambs and causes disease but other strains may have enhanced virulence. Memphis 37 is an RSV-A strain isolated from a pediatric case and used in studies in human adult subjects. The overarching goal of the studies undertaken was to develop a model of enhanced RSV that could be utilized for investigating the pathogenesis of enhanced disease as well as therapeutic regimens. The central hypothesis for these studies was that Memphis 37 causes moderate to severe disease in neonatal lambs as measured by alterations in respiration as well as gross and histologic lesions. Memphis 37 (M37) strain hRSV caused moderate disease in perinatal lambs as measured by clinical disease (expiratory effort or tachypnea), post-mortem gross lesions, and histologic lesions with abundant RSV-antigen immunoreactivity as well as significant viral mRNA levels. Nebulized Memphis 37 hRSV caused similar disease in lambs to hRSV strain A2. Memphis 37 hRSV grown in HEp-2 cells induced increased expiratory effort and greater lesion scores (gross and histologically) as well as increased antigen immunoreactivity as compared to Vero-grown M37. Nebulization and intranasal inoculation are reproducible methods of inoculation that caused a unique distribution pattern of lesions when compared to each other or fiberoptic intrabronchial inoculation. In conclusion, Memphis 37 hRSV will cause disease in perinatal lambs and shows promise for use in a model of severe RSV disease

Control and Elimination of Field Bindweed

Guide to control and elimination of field bindweed discusses how to reduce stands, prevent spreading, and soil sterilant

Planting Corn in South Dakota

This publication provides guidance on where and when to plant corn, as well as its maturity date, plant population, row spacing, weed and insect control, and soil fertility. It also includes area recommendations for the extreme southeastern, southeastern, northeastern, north central, south central western, and irrigated areas of South Dakota