Effect of Soil pH on Sclerotial Germination and Pathogenicity of Sclerotium rolfsii¹

Authors: M-Y. Shim , J. L. Starr

  • Effect of Soil pH on Sclerotial Germination and Pathogenicity of Sclerotium rolfsii¹

    Effect of Soil pH on Sclerotial Germination and Pathogenicity of Sclerotium rolfsii¹

    Authors: ,

Abstract

The effect of soil pH on sclerotial germination and pathogenicity of two isolates of Sclerotium rolfsii on peanut was examined. Sclerotial germination for both isolates was greater (P 0.05) in acidic soil than at alkaline pHs. Similarly, percentage of peanut stems infected by S. rolfsii in greenhouse tests was greater at soil pH 5.6 than at alkaline soil pHs (P 0.05), but disease did develop at soil pH 8.7 and 9.8. In contrast to a previous in vitro study, these data confirm that sclerotia of S. rolfsii will germinate and initiate disease at soil pH > 7.0.

Full Article Available as PDF only - Use Download Feature

Keywords: Arachis hypogaea, Groundnut, peanut, stem rot, sclerotia

How to Cite:

Shim, M. & Starr, J., (1997) “Effect of Soil pH on Sclerotial Germination and Pathogenicity of Sclerotium rolfsii¹”, Peanut Science 24(1), p.17-19. doi: https://doi.org/10.3146/i0095-3679-24-1-5

6 Views

1 Downloads

Published on
01 Jan 1997
Peer Reviewed

Author Notes

1 This study was partial fulfillment of the requirements for the first author's Ph.D. degree. Supported by the Texas Peanut Producers Board and USDA IPM grant no. 92-34103-6937.