Modifying the Formulation of Abamectin To Promote Its Efficacy on Southern Root-Knot Nematode (<i>Meloidogyne incognita</i>) under Blending-of-Soil and Root-Irrigation Conditions

Li, Beixing; Ren, Yupeng; Zhang, Da-xia; Xu, Shuangyu; Mu, Wei; Liu, Feng

doi:10.1021/acs.jafc.7b04146

Cited by 33 publications

(37 citation statements)

References 27 publications

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“…When the flow velocity was faster than the soil permeability, chemigation reduced the downward loss of soil moisture and increased the horizontal motion of fluopyram in the irrigation water. This pattern was in accordance with [ 30 , 31 ]. With the popularization irrigation system in Guangxi, these results suggested that fluopyram applied by chemigation systems is highly promising.…”

Section: Discussionsupporting

confidence: 93%

Efficacy of fluopyram applied by chemigation on controlling eggplant root-knot nematodes (Meloidogyne spp.) and its effects on soil properties

Wang

Bangash

et al. 2020

PLoS ONE

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The root-knot nematode ( Meloidogyne spp.) is one of the major challenges in eggplant ( Solanum melongena L.) production. Fluopyram, known to be an effective fungicide, is also used for controlling root-knot nematode. However, in China, little information is currently available regarding the efficacy of fluopyram via chemigation against root-knot nematode and its effects on soil properties. For this, the objective of this work was to test mortality of root-knot nematode, functional diversity of soil microbial community, activity of soil enzyme after fluopyram applicated by chemigation. The results of two field experiments revealed that concentration of 60 g·ha -1 fluopyram applied with 200 L·ha -1 irrigation water at 2 L·h -1 flow velocity was the most effective chemigation parameters for controlling eggplant against root-knot nematode. The functional diversity of the soil microbial community was significantly affected by fluopyram. The activities of soil urease and β —glucosidase decreased during the initial stages but recovered at later stages. In brief, fluopyram has advantageous for the efficient control of root-knot nematode with no deleterious effects on soil properties as well as chemigation is positive for application in karst landscape in Guangxi.

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Section: Discussionsupporting

confidence: 93%

Efficacy of fluopyram applied by chemigation on controlling eggplant root-knot nematodes (Meloidogyne spp.) and its effects on soil properties

Wang

Bangash

et al. 2020

PLoS ONE

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“…The LC50 and LC90 values affecting egg hatching and J2 motility for the pure milbemectin and the commercial formulate Milbeknock ® were very close (Figures 1 and 2), which indicates that the excipients of the formulated product Milbeknock ® did not interfere with the nematicidal activity of the active ingredient. The toxicity values of milbemectin to the nematode were similar to those reported for emamectin (LC50: 3.6 µg/mL; LC90: 18.2 µg/mL) [8] and abamectin (LC50: 1.7-4.8 µg/mL; LC90: 4.7-25.7 µg/mL) [9]. The similarities in toxicity values of milbemectin, abamectin and emamectin suggest that these macrocyclic lactones share a similar mode-of-action against Meloidogyne species.…”

Section: Discussionsupporting

confidence: 82%

Nematicidal Efficacy of Milbemectin against Root-Knot Nematodes

Talavera

Vela-Delgado

Verdejo-Lucas

2020

Plants

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The nematicidal efficacy of milbemectin and its commercial formulate Milbeknock® on (i) egg hatching, (ii) juvenile motility and (iii) infective capacity of root-knot nematodes was evaluated in vitro and in planta assays. Serial dilutions of pure milbemectin were tested against nematode eggs and juveniles and lethal concentrations LC50 and LC90 calculated. Exposure of egg masses to milbemectin at a concentration of 30 μg/mL for 72 h reduced egg hatching by 52%. The increase in exposure time to 240 h did not increase the egg hatching inhibition at the highest concentration 30 μg/mL (53%) but reduced egg hatching at 15 and 7 μg/mL by 35 and 24%, respectively, when compared to untreated controls. The inhibitory effect of milbemectin on juvenile motility ranged from 41 to 87% depending on its concentration, and this effect was persistent after rinsing the juveniles in water. The probabilistic dose–response model indicated that lethal concentrations of milbemectin for juvenile motility were LC50: 7.4 μg/mL and LC90: 29.9 μg/mL. The pre-plant application of Milbeknock® to soils infested with the nematode reduced its infective capacity by 98–99% compared to untreated soils in pot experiments. Milbeknock® reduced nematode soil population densities by 50–60% in natural infestations under field conditions. Milbemectin shows a high level of efficacy against root-knot nematodes as it reduces egg hatching, persistently immobilizes nematode juveniles, and reduces tomato root infection.

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“…However, the massive agricultural use of DQ not only increases the cost, but also results in negative impacts on the environment [5,6]. To address this limitation, the exploitation of the controlled release formulations (CRFs) of DQ could be promising, since CRFs permit the application of minimal amounts of an active ingredient to maintain the desirable activity, which will mitigate the potentially negative impacts on the environment, and promote sustainable agricultural development [7,8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Sulfonate-Functionalized Mesoporous Silica Nanoparticles as Carriers for Controlled Herbicide Diquat Dibromide Release through Electrostatic Interaction

Shan

Cao

et al. 2019

IJMS

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Environmental stimuli-responsive pesticide release is desirable for enhanced efficiency and reduced side effects. In most cases, the loading and release of pesticides mainly depends on hydrophobic interactions and hydrogen bonding. Electrostatic interaction is less investigated as a weapon for achieving high loading content and controlled pesticide release. In this work, negative-charge decorated mesoporous silica nanoparticles (MSNs) were facilely fabricated by introducing sulfonate groups onto MSNs through a post-grafting method. Sulfonate-functionalized MSNs (MSN-SO3) were synthesized by conversion of epoxy group into sulfonate group using a bisulfite ion as a ring opening reagent. Diquat dibromide (DQ), one of the globally used quaternary ammonium herbicides, was efficiently loaded into these negatively charged MSN-SO3 nanoparticles. The loading content was increased to 12.73% compared to those using bare MSNs as carriers (5.31%). The release of DQ from DQ@MSN-SO3 nanoparticles was pH and ionic strength responsive, which was chiefly governed by the electrostatic interactions. Moreover, DQ@MSN-SO3 nanoparticles exhibited good herbicidal activity for the control of Datura stramonium L., and the bioactivity was affected by the ionic strength of the release medium. The strategy of cargo loading and release dependent on the electrostatic interactions could be generally used for charge-carrying pesticides using carriers possessing opposite charges to mitigate the potential negative impacts on the environment.

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Modifying the Formulation of Abamectin To Promote Its Efficacy on Southern Root-Knot Nematode (Meloidogyne incognita) under Blending-of-Soil and Root-Irrigation Conditions

Cited by 33 publications

References 27 publications

Efficacy of fluopyram applied by chemigation on controlling eggplant root-knot nematodes (Meloidogyne spp.) and its effects on soil properties

Efficacy of fluopyram applied by chemigation on controlling eggplant root-knot nematodes (Meloidogyne spp.) and its effects on soil properties

Nematicidal Efficacy of Milbemectin against Root-Knot Nematodes

Sulfonate-Functionalized Mesoporous Silica Nanoparticles as Carriers for Controlled Herbicide Diquat Dibromide Release through Electrostatic Interaction

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