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United States Department of Agriculture

Agricultural Research Service

Title: Soil treatments against Fusarium oxysporum f. sp. vasinfectum race 4)

Author
item Bennett, Rebecca
item Spurgeon, Dale
item Detar, William
item Hanson, Bradley
item Gerik, James
item Hutmacher, Robert
item Davis, Michael

Submitted to: American Phytopathological Society
Publication Type: Abstract Only
Publication Acceptance Date: 5/4/2009
Publication Date: 6/1/2009
Citation: Bennett, R., Spurgeon, D.W., Detar, W.R., Hanson, B.D., Gerik, J.S., Hutmacher, R.B., Davis, M.R. 2009. Soil treatments against Fusarium oxysporum f. sp. vasinfectum race 4. American Phytopathological Society. Phytopathology. 99:S10.

Interpretive Summary:

Technical Abstract: Few economically feasible disease management options are available for California cotton producers with fields infested with race 4 of Fusarium oxysporum f. sp. vasinfectum. For treating soil to reduce inoculum levels, past studies indicate that solarization and fumigation with metam-sodium may be affordable, yet effective solutions. To test their applicability to race 4 in cotton, we compared four soil treatments: a six-week-long summertime solarization, metam-sodium (75 gal/acre), methyl bromide-chloropicrin (50:50, 350 lbs/acre, tarped) and 1,3-dichloropropene-chloropicrin (40:60, 31.5 gal/acre, tarped). The treatments were applied in plots in a field naturally infested with race 4, using a split-plot design, with soil treatment as the whole plot factor and cotton cultivar as the subplot. Four cultivars representing a range of susceptibilities to race 4 were used to evaluate the treatments. We will present observations from the first season indicating that soil solarization worked as well as more costly, tarped fumigants (methyl bromide-chloropicrin and 1,3-dichloropropene-chloropicrin) as evidenced by plant survival.

Last Modified: 05/28/2017
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