The reference section should include only published, significant, and relevant sources accessible through a library or an information system. These include journal articles, books, theses, dissertations, proceedings, bulletins, reports, and published abstracts of papers presented at meetings
Note the following--
Citations are listed in alphabetical order.
Only initials of first names are listed. Order is last name, first initials for the first author. All other authors are listed by first initials and last name.
Title of journal is abbreviated in most cases.
Every line of each citation starts at the left margin--no hanging indents.
Eshel, Y. and E. Shlevin. 1973. Toxicity of dinitroaniline herbicides to watermelons. J. Amer. Soc. Hort. Sci. 98:483–485.
Frost, D.J., S.F. Gorske, and E.E. Wittmeyer. 1983. Summer squash tolerances to selected herbicides. HortScience 18:911–912.
Glaze, N.C. 1975. Weed control in cucumber and watermelon. J. Amer. Soc. Hort. Sci. 100: 207– 209.
Grey, T.L., D.C. Bridges, and D.S. NeSmith. 2000. Tolerance of cucurbits to the herbicides clomazone, ethalfluralin, and pendimenthalin. I. Summer squash. HortScience 35:632–636.
In Google Scholar under each citation there is a "Cite" link with 3 different styles. The "APA" format is the most similar to the Hortscience format.
NOTE: See ASHA Style Manual for abbreviations
Last name, Initials. Year. Article title, sentence style capitalization. Abbreviated journal title Title volume(issue, if available): pages. URL.
Converse, R.H. 1960. Physiologic specialization of Fusicladium effusum and its evaluation in vitro. Phytopathology 56:527-531. https://www.cabdirect.org/cabdirect/abstract/19611100265.
Journal article with multiple authors
Last name, Initials., and Initials Last name. Year. Article title, sentence style capitalization. Abbreviated journal title volume(issue, if available):pages. URL.
Yates, I.E., D. Maxey, S. Lee, D. Sparks, and C.C. Reilly. 1996. Developing the pecan scab fungus on susceptible and resistant host and nonhost leaves. J. Amer. Soc. Hort. Sci. 121:350-357. https://journals.ashs.org/jashs/view/journals/jashs/121/3/article-p350.xml.
Last name, Initials. Year. Book title, sentence style capitalization. Edition (if available). Publisher (short form), location.
Hartmann, H.T., D.E. Kester, and F.T. Davies, Jr. 1990. Plant propagation principles and practices. 5th ed. Prentice Hall, Englewood Cliffs, N.J.
Last name, Initials. Year. Chapter title, sentence style capitalization, pages. In: Editors. Book title, sentence style capitalization. Edition (if available). Publisher (short form), location.
Brown, A.G. 1995. Apples, p. 3–37. In: J. Janick and J.N. Moore (eds.). Advances in fruit breeding. Purdue Univ. Press, West Lafayette, Ind.
Sponsoring society. Report title. Year. Conference number, City, Day Month (abbreviated) Year. (Proceedings, if known).
American Society for Horticultural Science. Tropical Region. 2000. Proc. XVIII Annu. Mtg., Miami, 25–30 Oct. 2000. (Proc. Trop. Reg. Amer. Soc. Hort. Sci. 14).
U.S. Department of Agriculture. 1997. Agricultural statistics for 1996. U.S. Dept. Agr., Washington, D.C.
Reeder, J.D. 2001. Nitrogen transformations in revegetated coal spoils. Colo. State Univ., Fort Collins, PhD Diss. Abstr. 81-26447.