Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2020 Apr;76(4):1569-1577.
doi: 10.1002/ps.5678. Epub 2019 Dec 16.

Pest control with drip-applied dimethyl disulfide and chloropicrin in plastic-mulched tomato (Solanum lycopersicum L.)

Jialin Yu  1   2 , Shaun M Sharpe  3 , Gary E Vallad  2 , Nathan S Boyd  2
Affiliations

Pest control with drip-applied dimethyl disulfide and chloropicrin in plastic-mulched tomato (Solanum lycopersicum L.)

Jialin Yu et al. Pest Manag Sci. 2020 Apr.

Abstract

Background: Dimethyl disulfide (DMDS) is used as a preplant soil fumigant for weed and soilborne pathogen control in plasticulture vegetable crops. The objective of this research was to determine the control efficacy of emulsifiable concentrate (EC) formulation of DMDS or DMDS + chloropicrin (Pic) on weed and Fusarium wilt in tomato (Solanum lycopersicum L.) plasticulture.

Results: The effective DMDS rates required to provide 50% (ER50 ) control of purple nutsedge (Cyperus rotundus L.) were 210 and 340 kg ha-1 at 4 weeks after fumigation (WAF) in fall 2017 and fall 2018, respectively, while these values increased to 348 and >467 kg ha-1 , respectively, at 12 WAF. The ER50 values of DMDS + Pic were 150 and 240 kg ha-1 at 4 WAF in fall 2017 and fall 2018, respectively, while these values increased to 255 and 450 kg ha-1 , respectively, at 12 WAF. DMDS + Pic was generally more effective than DMDS for C. rotundus control. The high rates of DMDS or DMDS + Pic provided adequate C. rotundus control in early season but failed to provide effective control by season end. In addition, DMDS + Pic injections through drip tape effectively reduced Fusarium oxysporum f. sp. lycopersici (FOL) inoculum while DMDS alone was generally ineffective.

Conclusion: Injection of the EC formulation of DMDS or DMDS + Pic through drip tape should have been provided a viable option for C. rotundus and Fusarium wilt control in plastic-mulched tomato. However, supplemental weed management actions, such as herbicide applications, may be required to achieve season-long control. © 2019 Society of Chemical Industry.

Keywords: fumigation; sedges; soilborne diseases; vegetable crops; weed control.

PubMed Disclaimer

References

REFERENCES

    1. Webster T, Weed survey - southern states: cucurbits, fruiting vegetables, cole crops and greens, other vegetables, peaches, apples, fruits and nuts, citrus crops. Proc South Weed Sci Soc 63:250 (2010).
    1. Morales-Payan JP, Santos BM, Stall WM and Bewick TA, Interference of purple nutsedge (Cyperus rotundus) population densities on bell pepper (Capsicum annuum) yield as influenced by nitrogen. Weed Technol 12:230-234 (1998).
    1. Chase CA, Sinclair TR, Shilling DG, Gilreath JP and Locascio SJ, Light effects on rhizome morphogenesis in nutsedges (Cyperus spp.): implications for control by soil solarization. Weed Sci 46:575-580 (1998).
    1. Grichar WJBB, Brewer KD purple nutsedge control and potato (Solanum tuberosum) tolerance to sulfentrazone and halosulfuron. Weed Technol 17:485-490 (2003).
    1. Yu J and Boyd NS, Weed control with and strawberry tolerance to herbicides applied through drip irrigation. Weed Technol 31:870-876 (2017).

LinkOut - more resources