HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Klepper, B. Articles by Waldman, S. E. Search for Related Content PubMed Articles by Klepper, B. Articles by Waldman, S. E. Agricola Articles by Klepper, B. Articles by Waldman, S. E.

Use of Growing Degree Days to Project Sample Dates for Cereal Crops

USDA-ARS, Columbia Plateau Conserv. Res. Ctr., P.O. Box 370, Pendleton, OR 97801.

^* Corresponding author.

Timely field sampling of a developing crop requires careful organization of laboratory space, equipment, and personnel to maximize efficiency. This paper demonstrates how historical temperature data sets, planting dates, and plot site elevation and location can be used to project expected developmental stage for winter wheat (Triticum aestivum L.) plants at any site in the Pacific Northwest dryland wheat-growing areas. Historical average temperature data from long-term weather station records for over 50 sites in the Oregon-Washington-Idaho dryland cereal production areas are stored on a computer. A program selects the weather station site nearest to the plot site on the basis of latitude, longitude, and altitude. Average daily maximum and minimum temperatures from the weather station are used to generate daily growing degree days for the plot site. Growing degree days are used to predict crop development. Projections can be made of either the expected date for a particular developmental stage or the expected degree days for any given date. Projections are used to schedule sample dates.

Received for publication December 9, 1987.

This article has been cited by other articles:

				C. Chen, W. A. Payne, R. W. Smiley, and M. A. Stoltz Yield and Water-Use Efficiency of Eight Wheat Cultivars Planted on Seven Dates in Northeastern Oregon Agron. J., July 1, 2003; 95(4): 836 - 843. [Abstract] [Full Text] [PDF]