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Akira Sugiura, Takeshi Ohkuma, Young A Choi, Ryutaro Tao, and Mihoko Tamura

2 Current address: Department of Pomology, University of California, Davis, CA 95616. The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked

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Hisashi Yamada, Hirokazu Ohmura, Chizuru Arai, and Makoto Terui

We thank George C. Martin, Dept. of Pomology, Univ. of California, Davis, for reviewing this manuscript. The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be

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Naomi Hirsch and Louise Ferguson

For California pomology, it is ideal to communicate and disseminate information electronically because of its large size and diversity of fruit and nut crops. In support of statewide extension, the Fruit & Nut Research and Information Center's World Wide Web site 9 http://pom44.ucdavis.edu) focuses on providing information and links for temperate, subtropical and tropical fruits and nuts and keeping all interested persons well informed about University of California research and outreach activities. The Internet has been proven ideal for its user friendliness and rapid dissemination of current information. The Center supports this electronic change for growers and industry by collaborative projects with industry and involving Internet education and demonstrations at short courses, symposia, and educational days throughout the state. By this outreach to fruit and nut crop industries, the needs of the growers can be addressed. Also, it is important to address interdisciplinary cooperation and efficiency in the Agricultural Experiment Station and Cooperative Extension programs, especially in view of the recent reduction in staff and resources. By creating electronic listserv groups for each crop through the Center, extension specialists and farm advisors have the ability for increased communication. A more visible and active focal point —both within and outside the University—for research and outreach activities related to fruit and nut production, handling, processing, marketing and consumption has been created since the Center was established in Dec. 1995.

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Robert C. Herner

The Dept. of Horticulture changed its curriculum prior to 1992 to conform to the change from the quarter to the semester system that took place in Fall 1992. As a result of changes in our student body, their interests, and new accounting procedures for determining productivity in our college and the university, another revamping of our curriculum was accomplished beginning in Fall 1992 and our curriculum was changed again to take effect in Fall 1994. Our students now have a choice of a Landscape, Design, Construction Management option or Horticulture. Students all take a two-semester sequence of an Introductory Horticulture course—they must choose a production and management course from three out of four commodity areas (floriculture, landscape, pomology, or vegetable crops), and three out of five upper-division courses in applied physiology or genetics. They must also take a course in Greenhouse Structures and Management and a senior-level capstone course in Horticutural Management. This curriculum has broadened our students' exposure to horticulture to a much greater degree than was present in our old curriculum. In addition, they have about 20–21 credits (out of 120) for electives.

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Anita Nina Azarenko

A situation-based or modified case study approach to learning has been adopted in an upper division fruit production course that is taught at Oregon State University in the Department of Horticulture. A new case study, which will have a high probability of generating discussion on key pomological themes, is developed each term. On the first meeting day of class, students identify relevant themes in the case study. A modified jigsaw cooperative learning strategy is then used to cover the relevant subject matter throughout the term. While using this strategy, groups of two to three students become experts on a theme and are responsible for sharing their knowledge with their peers. The instructor mentors the experts by reviewing assignments created by them, checking answers to assignments, and administering quizzes on the themes. About midterm, larger groups of six to seven students begin their preparation of an oral presentation and written synthesis of the goals and possible pathways for achieving the targets of the primary stakeholders (i.e., orchardists, field representatives, extension faculty, etc.) that are presented in the case study. The groups make their presentations to the stakeholders at the end of the term. Students are required to prepare an individual written report. This learning approach links theory with practice, gives students practice in extensively analyzing a situation, enables students to become conversant in and knowledgeable of basic pomology, builds positive relationships between fellow students, and provides multiple experiences for communicating information and student's discoveries.

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Stephen M. Southwick, James T. Yeager, Joseph Osgood, Richard Buchner, William Olson, and Maxwell Norton

Ten new marianna root-stocks [Prunus cerasifera Ehrh. × P. munsoniana Wight & Hedr.(?)] derived from open pollination of `Marianna 2616' (M series) were planted in 1987 and evaluated at four commercial orchard locations in California (Tehama, Butte, Sutter, and Merced counties) with `Improved French' prune (P. domestica L.) as the scion. These rootstocks were compared to three standard rootstocks: `Marianna 2624', myrobalan seedling (P. cerasifera Ehrh.) and `Myrobalan 29C'. Leaf potassium (K) and nitrogen (N), tree growth, fruit production and fruit quality were measured. Selection M40 in particular had high leaf N, high leaf K (equal to `Marianna 2624' and better than the myrobalan standards), higher yield efficiency per tree, fruit size, drying characteristics, and few root suckers when compared to the three standard rootstocks. M40 is being considered for patent and release by the Pomology Department at the University of California, Davis. Selection M58 had the highest yield efficiency of any tested rootstock. Several selections had characteristics that would make expanded planting worth considering.

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Yuanwen Teng, Kenji Tanabe, Fumio Tamura, and Akihiro Itai

1 Current address: Tottori Horticultural Experiment Station, Daieicho, Tottori 689-2221, Japan; e-mail tengyuanwen@hotmail.com . We gratefully acknowledge Zhicheng Lu and Yufeng Cao, Research Institute of Pomology, Chinese Academy of Agricultural

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A. Masia, A. Zanchin, N. Rascio, and A. Ramina

, polyvinylpolypyrrolidone. 1 Institute of Pomology, University of Padova, 35131 Padova, Italy. 2 Dept. of Biology, University of Padova, 35121 Padova, Italy. Authorized for publication as paper no. 254 of the Scientific Journal Series of the Institute of Pomology, Univ. of

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A.G. Reynolds, D.A. Wardle, A.C. Cottrell, and A.P. Gaunce

1 Research Scientist, Pomology and Viticulture Section. 2 Research Assistant, Pomology and Viticulture Section. 3 Research Assistant, Soil Science and Engineering Section. 4 Research Scientist, Soil Science and Engineering Section. Contribution no

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A.G. Reynolds, C.G. Edwards, D.A. Wardle, D. Webster, and M. Dever

1 Research scientist, Pomology and Viticulture Section. 2 Assistant professor, Dept. of Food Science, Washington State Univ., Pullman, WA 99164. 3 Research scientist, Pomology and Viticulture Section. 4 Research assistant, Dept. of Food Science