You are here: Home
/ Publication Information
Title: Forcasting Shortleaf Pine Seed Crops in the Ouachita Mountains
Author: Shelton, Michael G.; Wittwer, Robert F.;
Source: Gen. Tech. Rep. SRS–71. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. pp. 119-123
Publication Series: Miscellaneous Publication
Description: We field tested a cone-rating system to forecast seed crops from 1993 to 1996 in 28 shortleaf pine (Pinus echinata Mill.) stands, which represented a wide range of stand conditions. Sample trees were visually assigned to one of three cone-density classes based on cone spacing, occurrence of cones in clusters, and distribution of cones within the crown. Classification took < 1 minute per tree, permitting a large number of trees to be evaluated rather than making precise counts on a few trees. The stand’s mean cone rating and basal area explained 82 percent of the variation in sound seed production; however, the developed prediction equation had a large root mean square error (257,000 seeds per acre). Our cone-rating system did well in forecasting the poor and good seed crops. However, more precise determinations of both cone and seed density are probably warranted when seed crops are forecast to be marginal for stand regeneration.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- You may send email to email@example.com to request a hard copy of this publication. (Please specify exactly
which publication you are requesting and your mailing address.)
XML: View XML
Shelton, Michael G.; Wittwer, Robert F. 2004. Forcasting Shortleaf Pine Seed Crops in the Ouachita Mountains. Gen. Tech. Rep. SRS–71. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. pp. 119-123
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility