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Mark A. Hubbard

College of the Ozarks is a private, liberal arts college in southwestern Missouri, and the Agriculture Dept. has recently begun instituting a variety of horticulture courses in an effort to meet the increasing student interest in horticultural science. The objective is to educate and train students in the horticulture fundamentals and specific production areas (advanced courses). Also, the College is in the process of constructing teaching and demonstration gardens to be used in conjunction with classroom instruction. These gardens will include a plant materials collection and horticultural crop production areas. Additionally, as the College requires that students work part-time at any of several work “stations” on campus, students have the opportunity to gain experience in landscaping or in production greenhouses on campus. Currently, the college has 10,000 ft2 of greenhouse space that is operated for the purposes of producing plants for campus landscaping, maintaining a ≥6000 orchid collection, and producing plants for seasonal sales. The college intends to integrate the classroom instruction, experiences in the teaching gardens, and the required work experiences to provide students with a complete horticultural education. Comments and suggestions for this budding endeavor are highly sought after.

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Mark A. Hubbard, James A. Flore, John C. Wise, and James W. Johnson

European red mite (Panonychus ulmi) populations were monitored in a tart cherry (Prunus cerasus `Montmorency') orchard and the effects on photosynthesis determined. Mites levels were controlled in some trees by miticide applications to establish different cumulative mite*days in the trees. Photosynthetic inhibition caused by insect injury was also simulated by spraying other trees with 78 ppm Terbacil at one of four different times during the season, The mite*days accumulated in 1993 ranged from 937 to 2205, however, there were no differences in single leaf or whole tree CO2 assimilation, chlorophyll a fluorescence, or chlorophyll levels among the different levels of mite damage. Likewise, there were no differences in these same parameters among the Terbacil-treated trees except that photosynthesis was reduced on treated trees for 10-14 days, after which photosynthesis recovered to the level of the controls. There were no differences in yield or fruit quality among any treatments, and cold hardiness and return fruiting characteristics will be measured.