By Randy Weisz
At various times through the growing season, it can be helpful to have a means of evaluating the potential yield of a given wheat crop. This can assist in determining how well the crop is developing, if additional inputs may be beneficial, or if the crop should be abandoned for full-season beans. One of the simplest approaches to estimating potential yield in a wheat crop is to count the number of heads in a given area. Since wheat yields are directly proportional to head density, counting heads per unit area can provide a good estimate of potential yield. If the crop has not headed out, but is close to jointing, the number of heads per square foot can be estimated by counting the number of tillers with at least three leaves.
Figures 17-1 through 17-4 show how average wheat yields relate to the number of heads per square foot for the most common soft red winter wheat varieties grown in North Carolina.
This file is a chapter from Small Grains Production Guide, 2004-05. Recommendations for the use of agricultural chemicals are included in this publication as a convenience to the reader. The use of brand names and any mention or listing of commercial products or services in this publication does not imply endorsement by the NC Cooperative Extension Service nor discrimination against similar products or services not mentioned. Individuals who use agricultural chemicals are responsible for ensuring that the intended use complies with current regulations and conforms to the product label. Be sure to obtain current information about usage regulations and examine a current product label before applying any chemical. For assistance, contact your county Cooperative Extension Center.
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North Carolina Cooperative Extension Service
Distributed in furtherance of the Acts of Congress of May 8 and June 30, 1914. North Carolina State University and North Carolina A&T State University commit themselves to positive action to secure equal opportunity regardless of race, color, creed, national origin, religion, sex, age, or disability. In addition, the two Universities welcome all persons without regard to sexual orientation. North Carolina State University, North Carolina A&T State University, U.S. Department of Agriculture, and local governments cooperating.
9/04—3M—JMG (Revised) AG-580
EO4-43980
Last Revised Sept. 2004