Growing lima bean seedlings in unbuffered soil treated with Ca at levels from 0 to 2000 lb./A increased the concn of Ba, Ca, Cu, Ca:Mg, and Ca:Sr, and decreased P, K, Mg, Zn, Mo, Mn, Fe, and A1 in top tissue. In root tissue, Ca, Cu, and Ca:Mg increased and P, Ba, Zn, B, Mo, and Mn concn decreased as the soil Ca level increased. Lima bean tops contained higher levels of P, K, Ca, Sr, and Cu than roots and lower levels of Ba, Mg, Zn, Mo, and Mn. Plant tops contained higher levels of Sr than Ba, but roots contained lower levels. Increasing the soil Ca level to 1000 lb./A increased the Sr level of tops, but further increases in soil Ca decreased top Sr. Soil Mg increased and Mn decreased markedly with increased soil Ca level and soil pH was increased from 4.7 to 6.1.
Two primary purposes of education are to satisfy the quest for knowledge and to provide educated and trained persons to serve the needs of society. These purposes also constitute an important part of the mission of a horticulture teaching program. In recent years, this mission has become more difficult to achieve, being challenged by declining enrollments, reallocation of positions, operating resources for teaching, inadequate facilities, and the diminishing half-life of new knowledge brought about by rapid advances in science and technology. The challenge also comes from institutional and societal pressures to look beyond disciplinary boundaries in both teaching and research.