Efficacy of dimethyl disulfide and metam sodium combinations for the control of nutsedge species

Stevens, Mary C.; Freeman, Joshua H.

doi:10.1016/j.cropro.2018.04.010

Cited by 15 publications

(16 citation statements)

References 18 publications

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“…DMDS primarily affects mitochondrial respiration through blocking the activity of the enzyme cytochrome oxidase . DMDS has proven to be an effective fumigant for control of Cyperus spp . and other soilborne pathogens such as Fusarium oxysporum and Meloidogyne nematodes .…”

Section: Introductionmentioning

confidence: 99%

“…However, DMDS has an odor that has been described as decaying fish, propane, or pungent garlic. The human nose is very sensitive to low DMDS concentrations of 0.007–0.012 ppm . This has raised concerns regarding the use of DMDS in populous areas.…”

Section: Introductionmentioning

confidence: 99%

“…40 DMDS has proven to be an effective fumigant for control of Cyperus spp. 20,41,42 and other soilborne pathogens such as Fusarium oxysporum and Meloidogyne nematodes. 27,42,43 DMDS is formulated with Pic to broaden the pest control spectrum.…”

Section: Introductionmentioning

confidence: 99%

“…The human nose is very sensitive to low DMDS concentrations of 0.007-0.012 ppm. 41,45 This has raised concerns regarding the use of DMDS in populous areas. DMDS exhibits low toxicity to dermal exposure or when inhaled, 45,46 but exposure to the odor may cause irritation of the upper respiratory tract, eyes, and skin, leading to symptoms such as coughing, chest tightness, dizziness, headache, wileyonlinelibrary.com/journal/ps and nausea.…”

Section: Introductionmentioning

confidence: 99%

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

Sharpe

Vallad

et al. 2019

Pest Management Science

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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

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Sharpe

Vallad

et al. 2019

Pest Management Science

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“…As an important fine chemical product, dimethyl disulfide (DMDS) is widely used as a soil fumigant [1][2][3], herbicide [4], food additive [5], sulfide hydrogenation catalyst, and chemical raw material [6]. Thus, the preparation method of DMDS is vital for all the chemical companies, which is commonly classified as four kinds of manufacturing processes: (1) the dimethyl sulfate process (Equation (1)) [7]; (2) the methanol vulcanization process (Equation (2)) [8,9]; (3) the methanethiol vulcanization process (Equation (3)) [10,11]; and (4) the methyl mercaptan oxidation process which is also called Merox process (Equation (4)) [12]:…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Catalytic Activity of Activated Carbon Supported Sulfonated Cobalt Phthalocyanine in the Preparation of Dimethyl Disulfide

et al. 2018

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The Merox process was widely applied in the fine chemical industry to convert mercaptans into disulfides by oxidation with oxygen, including dimethyl disulfide (DMDS). In this paper, a new activated carbon (AC)-supported sulfonated cobalt phthalocyanine (AC-CoPcS) catalyst was prepared through the chemical linkage of ethylenediamine between them. UV−VIS, FT-IR, BET, and XPS were used to characterize the structure of the new catalyst. Then AC-CoPcS was applied to catalyze sodium methylmercaptide (SMM) oxidation for the preparation of DMDS. The effect of process parameters, such as reaction time, catalyst dosage, reaction temperature, and oxygen pressure on SMM conversion per pass (CPPSMM), yield (YieldDMDS), and purity of the DMDS (PurityDMDS) product were investigated to evaluate the catalytic performance of AC-CoPcS. The new supported catalyst exhibits better catalytic performance than the commercial one and can be properly reused four times to obtain CPPSMM and YieldDMDS higher than 90% and 70%. Under the optimum experimental conditions, the CPPSMM and YieldDMDS could reach as high as 98.7% and 86.8%, respectively, and the purity of the DMDS product is as high as 99.8%. This new supported catalyst exhibits good industrial application prospects.

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Long‐term effect of fumigation and a sorghum cover crop on broadleaf and grass weeds in plastic‐mulched tomato

Sharpe

Boyd

2021

Pest Management Science

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BACKGROUND Broadleaf and grass weeds can adversely affect growth and productivity of plastic‐mulched tomato (Solanum lycopersicum L.). Two, four‐year research trials were conducted in Florida to evaluate the effect of repeated fumigation and chemical fallow versus a sorghum [Sorghum bicolor S. bicolor var. sudanense (Piper) Stapf.] cover crop on broadleaf and grass weeds in tomato plasticulture. RESULTS 1,3‐Dichloropropene (1,3‐D) + chloropicrin (Pic), dimethyl disulfide (DMDS) + Pic, and DMDS + metam potassium effectively controlled broadleaf weeds in‐crop and reduced densities by 79–98% compared to the non‐fumigated control but provided inconsistent control of grass weeds. DMDS + metam potassium was generally the most effective fumigant. During the fallow period, a sorghum cover crop effectively reduced broadleaf weed density than the chemical fallow, while chemical fallow effectively reduced grass weed density than the cover crop. The fallow program did not affect in‐crop densities of broadleaf and grass weeds. In some measurements, the evaluated fumigants resulted in taller tomato plants and higher yield compared to the non‐fumigated control. CONCLUSION We conclude that the evaluated soil fumigants effectively control broadleaf and grass weeds. Planting a sorghum cover crop effectively suppresses broadleaf weeds but not grasses during the fallow period. However, this suppression does not result in reduced weed density in‐crop despite the fact that similar weed species were observed in both time periods. © 2020 Society of Chemical Industry

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Efficacy of dimethyl disulfide and metam sodium combinations for the control of nutsedge species

Cited by 15 publications

References 18 publications

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

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

Synthesis and Catalytic Activity of Activated Carbon Supported Sulfonated Cobalt Phthalocyanine in the Preparation of Dimethyl Disulfide

Long‐term effect of fumigation and a sorghum cover crop on broadleaf and grass weeds in plastic‐mulched tomato

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