Control of <i>Meloidogyne incognita</i> in sweetpotato with fluensulfone

Ploeg, Antoon T.; Stoddard, Scott; Becker, J. Ole

doi:10.21307/jofnem-2019-018

Cited by 15 publications

(16 citation statements)

References 11 publications

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“…Similar results of reduced root-galling of tomato in M. javanica-infested fields were obtained by the application of 4.14 kg ha −1 fluensulfone via drip tapes [80]. The amount of marketable sweet potato in M. incognita-infested fields was increased 1.9-3.4 times by fluensulfone (1.96-3.36 kg ha −1 ) [81]. However, the control efficacy of the compound seems to be lower against nematodes from other genera.…”

Section: Field Application Efficacy and Environmental Conditionssupporting

confidence: 70%

From Old-Generation to Next-Generation Nematicides

Oka

2020

Agronomy

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The phaseout of methyl bromide and the ban on, or withdrawal of, other toxic soil fumigants and non-fumigant nematicides belonging to the organophosphate and carbamate groups are leading to changes in nematode-control strategies. Sustainable nematode-control methods are available and preferred, but not always effective enough, especially for cash crops in intensive agriculture. A few non-fumigant nematicides, which have a relatively high control efficacy with a low toxicity to non-target organisms, have been released to the market or are in the process of being registered for use. Fluensulfone, fluopyram, and fluazaindolizine are the three main and most promising next-generation nematicides. In this paper, several aspects of these non-fumigant nematicides are reviewed, along with a brief history and problems of old-generation nematicides.

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Section: Field Application Efficacy and Environmental Conditionssupporting

confidence: 70%

From Old-Generation to Next-Generation Nematicides

Oka

2020

Agronomy

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“…Marketable yield was increased for both treatments of fluensulfone, but similarly to results from potato ( Grabau et al, 2019 ), final soil population densities of M. incognita were 8 to 13 times higher than initial population densities. However, Ploeg et al (2019) found that both fluensulfone treatments were able to reduce M. incognita eggs/g of sweet potato root by 80%, which could contribute to the increased marketable yield.…”

Section: Efficacy Of New Chemical Nematicides In Greenhouse and Fieldmentioning

confidence: 91%

“…However, both Telone II and fluensulfone resulted in end of harvest final nematode population densities that were greater than initial densities of nematodes. Ploeg et al (2019) explored the effects of fluensulfone and application timing of fluensulfone on suppression of M. incognita on sweet potato. Fluensulfone was applied at 3.36 kg/ha 2 to 7 days pre-plant, followed by 2 post-plant applications of 1.68 kg/ha at 26 and 58 days.…”

Section: Efficacy Of New Chemical Nematicides In Greenhouse and Fieldmentioning

confidence: 99%

“…fumigants (soil sterilants), or organophosphates or carbamates (neural toxins), and many of them have been banned in recent years. Several comprehensive reviews on nematicides have been written (Taylor, 2003(Taylor, , retroactively published in 2003Wright, 1981;Hague and Gowen, 1987;Chitwood, 2003;Rich et al, 2004;Jones, 2017). A list of products that have been used as nematicides throughout history is given in Table 1.…”

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confidence: 99%

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New reduced-risk agricultural nematicides - rationale and review

Desaeger

Wram

Zasada

2020

Journal of Nematology

110

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The last decade has seen a sharp increase in nematicide research in the agricultural industry. As a result, several new synthetic nematicides have become available to growers, and several more are expected in the near future. This new interest in nematicides is directly related to the growing demand for safer and more selective products, and the increasing regulatory pressure on many of the traditional nematicides. This has led to a ban of several widely used fumigant (e.g. methyl bromide) and non-fumigant (e.g. aldicarb) nematicides. The loss of traditional nematicides, combined with a lack of replacement products and awareness of the damage that nematodes can cause, has not only raised concern among growers, but has also created new opportunities for the crop protection industry. Nematicides have become a priority, and many companies are now allocating significant research dollars to discover new nematicides. The new nematicides are very different from previous products: (i) they are more selective, often only targeting nematodes, and (ii) they are less toxic, and safer to use. This review article describes these new developments by discussing the challenges that are associated with finding new nematicides, reviewing the nature, characteristics, and efficacy of new nematicides, and discussing the impact they could have on future nematode management.

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“…One of the new nematicides is fluensulfone, which belongs to the heterocyclic fluoroalkenyl sulfones, a new chemical family . Its nematicidal activity is very high, especially against Meloidogyne species, in the laboratory and under field conditions . However, efficacy is affected by nematode species or populations, and soil type .…”

Section: Introductionmentioning

confidence: 99%

Sensitivity to fluensulfone of inactivated Meloidogyne spp. second‐stage juveniles

Oka

2020

Pest Management Science

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BACKGROUND: Nonfumigant nematicide efficacy is affected by several factors, such as nematode species and environmental conditions. However, the influence of nematodes' physiological status on nematicide efficacy is unknown. Inactive nematodes, such as those in quiescence or dormancy, seem to be more tolerant to nematicides than active ones. Second-stage juveniles of Meloidogyne species were inactivated by low temperatures and reversible nematicides before and during exposure to fluensulfone. The sensitivity of inactive juveniles to fluensulfone the nematicide was compared to that of active juveniles by EC 50 (median effective concentration) for juvenile immobilization and root gall reduction.RESULTS: Inactivating Meloidogyne hapla and Meloidogyne javanica juveniles at 5°C increased the EC 50 (median effective concentration) of fluensulfone for immobilization of and root galling by Meloidogyne spp. 3.6 to 9.5 times. When the exposure temperature was decreased from 25 to 15°C, EC 50 for M. javanica root gall reduction after 24 and 48 h exposure increased 3.1 and 4.9 times, respectively, whereas for M. hapla, it increased 2.3 and 2.0 times, respectively. Juveniles of M. javanica and M. incognita immobilized by fenamiphos were as sensitive to fluensulfone as active juveniles based on the number of root galls. However, juveniles of these species immobilized by fluopyram were more tolerant to fluensulfone than untreated active juveniles. An interaction of fluopyram and fluensulfone activities is suggested. CONCLUSION: Changes in the sensitivity of inactive Meloidogyne spp. juveniles to fluensulfone depend on the inactivation method. Fluensulfone could be better applied when nematodes are active in the soil.

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Control of Meloidogyne incognita in sweetpotato with fluensulfone

Cited by 15 publications

References 11 publications

From Old-Generation to Next-Generation Nematicides

From Old-Generation to Next-Generation Nematicides

New reduced-risk agricultural nematicides - rationale and review

Sensitivity to fluensulfone of inactivated Meloidogyne spp. second‐stage juveniles

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