Potential for improved control of southern stem rot caused by Sclerotium rolfsii Sacc.on peanut (Arachis hypogaea L.) was evaluated by combining moderate resistance with fungicide use. Various fungicides including carboxin, oxycarboxin, propiconazol, OAC 3890, and PCNB were applied to peanut lines NC 8C, NC Ac 18016, and Florigiant in North Carolina during 1980, 1981, and 1982. Consistently fewer disease loci occurred on NC Ac 18016 than on NC 8C or Florigiant. At least one fungicide reduced stem rot incidence in two of three years tested, but fungicide use did not result in greater yields. Effects of disease resistance and fungicides on suppression of stem rot development were additive.

Stem rot, Sclerotium rolfsii, Arachis hypogaea, groundnut, fungicides, disease resistance
This content is only available as a PDF.

Author notes

1Paper No. 8871 of the Journal Series of the North Carolina Agricultural Research Service, Raleigh 27695.

The use of trade names does not imply endorsment by the North Carolina Agricultural Research Service of the products named nor criticism of similar ones not mentioned.

Present title and address of senior author: Research Associate, Department of Crop Science, North Carolina State University, Box 7629, Raleigh, NC 27695–7629

American Peanut Research and Education Society
1985
American Peanut Research and Education Society