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

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via ISI Web of Science (1) Citing Articles via Google Scholar Google Scholar Articles by Farrer, D. Articles by Pate, M. H. Search for Related Content PubMed Articles by Farrer, D. Articles by Pate, M. H. Agricola Articles by Farrer, D. Articles by Pate, M. H. Related Collections Other Crop Management Best Management Practices Wheat

Wheat

Delayed Harvest Effect on Soft Red Winter Wheat in the Southeastern USA

^a Dep. of Crop Science, North Carolina State Univ., Raleigh, NC 27695-7620
^b Bay State Milling Co., 55 Franklin St., Winona, MN 55987

^* Corresponding author (randy_weisz{at}ncsu.edu)

Received for publication July 15, 2005. Harvest of soft red winter wheat (Triticum aestivum L.) in the southeastern USA can be delayed because of inclement weather or other unforeseen problems. Our objectives were to determine the impact of delaying harvest beyond grain ripeness (135 g kg^–1 grain moisture content) on yield, test weight, grain protein, and 20 milling and baking quality parameters, and to determine if these impacts were correlated with environmental conditions occurring between grain ripeness and harvest. In 2001 and 2002, a total of six trials were conducted where treatments consisted of a timely harvest at grain ripeness and a delayed harvest, 8 to 19 d later. Yield was reduced by up to 900 kg ha^–1 due to delayed harvest, with yield losses negatively related to total precipitation and positively related to minimum daily temperatures (R² = 0.99) during the delay interval, indicating that dry and warm environments increased yield losses. Test weight reductions up to 115 kg m^–3 were seen and were linearly related to the number of precipitation events (r² = 0.93) between harvests. Grain protein was not affected by delayed harvest. Of the milling and baking quality parameters measured, grain and flour falling number, clear flour percentage, grain deoxynivalenol (DON), and farinograph breakdown times were negatively affected by delayed harvest. Lower falling numbers and higher levels of DON are consistent with the high humidity and rainfall typical of the southeastern USA wheat harvest and are problematic for millers. Decreased farinograph breakdown times can be a problem for bakers.

Abbreviations: DON, doxynivalenol • MTI, mixing tolerance index