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Publication Information

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Title: Measuring bitterbrush seed production on plants with variable crown density...complete counts per plant suggested

Author: Seegrist, Donald W.; Neal, Donald L.; Hubbard, Richard L.;

Date: 1966

Source: Res. Note PSW-RN-130. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 6 p

Publication Series: Research Note (RN)

Description: A sampling study was made of the number of bitterbrush seeds per trap from plots in northeastern California. The count per trap had a large variation for each plant. This variation was not reduced to an acceptable low level by grouping the seed traps according to their position relative to the plant crown. In the absence of additional information, it is recommended that seed traps should not be used and that a complete count of bitterbrush seeds per plant be made.

Publication Notes:

  • 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.

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Seegrist, Donald W.; Neal, Donald L.; Hubbard, Richard L. 1966. Measuring bitterbrush seed production on plants with variable crown density...complete counts per plant suggested. Res. Note PSW-RN-130. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 6 p

 


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