Dissipation Kinetics and Risk Assessment of Thiamethoxam 25 % WG Residues in Vegetable Cowpea

Reddy, Banka Kanda Kishore; Paul, Ambily; George, Thomas J.

doi:10.55446/ije.2021.265

Cited by 4 publications

(4 citation statements)

References 12 publications

(12 reference statements)

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“…The imidacloprid residue was calculated by using [9]. ), k is the dissipation rate constant [10]. The half-life of imidacloprid was determined as DT 50 = ln2/k [11].…”

Section: Discussionmentioning

confidence: 99%

Dissipation Dynamics and Risk Assessment of Imidacloprid in Grape Berries Using LC- MS for Food Safety

Reddy

Krishnan²,

Sadhineni³

2022

IJECC

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Aim: The present study was taken up to assess the imidacloprid residue pattern in order to define strategies for improvement of quality and safety mainly healthfulness in grapes. Place and Duration of Study: The present study was carried out in Tamil Nadu during the period 2020-2021. Methodology: Dissipation studies were carried out in a farmer’s field at Theni, India (9o N latitude and 76o E longitude and 375m above mean sea level) with all good agricultural practices. During this study Grapes (Muscat Hamburg variety) was grown and the commercial formulation of imidacloprid 17.8% SL was applied at recommended dose (53 a.i ha-1) and double dose (106 a.i ha-1) Two sprays were given with an interval of 10 day by using a power operated sprayer as 500 L ha-1 spray fluid for dissipation study. The samples were processed by adopting modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) method. Results: The initial deposit imidacloprid in grape berries was 0.65 and 1.56 mg kg-1 at the recommended dose (53 g a.i ha-1) and double dose respectively (106 g a.i ha-1). The insecticide exhibited a slower dissipation rate and reached below its quantification level (<0.01 mg kg-1) in grape berries on 25th, 30th day at recommended and double doses respectively. Conclusion: The toxicological dietary risk assessment data shows that risk quotient is less than one which confirms safer to consumers. Pre-harvest interval does not apply for imidacloprid at recommended dose as being grapes harvested on the day of application itself were found safe for consumption and PHI/ safe waiting period of 2 days is suggested for double dose for harvesting.

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“…The imidacloprid residue was calculated by using [9]. ), k is the dissipation rate constant [10]. The half-life of imidacloprid was determined as DT 50 = ln2/k [11].…”

Section: Discussionmentioning

confidence: 99%

Dissipation Dynamics and Risk Assessment of Imidacloprid in Grape Berries Using LC- MS for Food Safety

Reddy

Krishnan²,

Sadhineni³

2022

IJECC

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“…Hafez and Singh (2016) reported that the initial residue of thiamethoxam was equal to the MRL after the 7th day of application at the recommended dose on tomato. Reddy et al (2022) found that thiamethoxam at the recommended rate was safe for crops and the environment. Also, Yang et al (2022) reported that thiamethoxam was safe and suitable for spinach under field conditions.…”

Section: Residues and Dissipation Of Thiamethoxam In Tomato Leaves An...mentioning

confidence: 99%

Determination of thiamethoxam residues and dissipation kinetic in tomato plants and its efficacy against Bemisia tabaci under open field eco system

et al. 2023

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Whitefly, Bemisia tabaci cause important losses for many crops especially tomato, therefore farmers often use many chemical insecticides which had dangerous side effects on human beings and environment, thus there are need to determine the residues of these chemicals in plant . The dissipation of thiamethoxam in tomato leaves and fruits followed the first order kinetics; Half-lives were 2.91 and 3.15 days for fruits and leaves, respectively. The residues of thiamethoxam were determined using a QuEChERS method with HPLC-DAD and it was 0.14 mg/ kg in fruits after 7 days of treatment and less than the maximum residue limit (MRL 0.2 mg/kg. The residue in leaves was more than in fruits. Seedlings produced from treated seeds were more resistant to different stages of the whitefly population and protect tomato plants from whitefly infestation for 6-10 weeks after transplanting. The three sprays of thiamethoxam increased the reduction percentage of B. tabaci stages and the highest increase was recorded after the third spray in egg, nymph, and adult stages. It could be recommend that Thiamethoxam is considered an unconventional insecticide appropriate for B. tabaci control and safe for humans and the environment.

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“…Other fruit crops viz., mangoes where 66% dimethoate residues were removed by tap water washing [15], 45.9% in guava [16]. Washing with salt water (2%) solution for 10 min was recorded as an effective decontaminant in removal of acephate, chlorpyrifos, quinalphos, bifenthrin residues (51.80-72.80%), acephate (72.74%), chlorpyrifos (67.52%) and quinalphos (65.0%), respectively in grapes [17][18][19][20], imidacloprid (61.89%) in field bean [21,22], tetraniliprole (61.49%) in tomato [23] and NaCl (5%) removed 90% of quinalphos and profenofos in chili [24].…”

Section: Effect Of Processing On the Level Of Pesticide Residues In V...mentioning

confidence: 99%

Perspective Chapter: Current Situation of Insecticide Residues in Food Commodities and Possible Strategies for Management of Residues

Kanda Kishore Reddy,

Maneesha,

Babu Naik

et al. 2023

Insecticides - Advances in Insect Control and Sustainable Pest Management

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Pesticides have evolved into a crucial instrument in agriculture’s evolution as a plant protection agent for increasing food output. Moreover, pesticides contribute significantly by preventing a number of terrible diseases. However, both occupational and environmental pesticide exposure can lead to a number of health issues in people. It has been noted that pesticide exposures are becoming more and more associated with immune system suppression, hormone disruption, lowered intellect, abnormalities in reproduction, and cancer. Because of the great demand for farm produce and their lack of awareness of the hazardous consequences of pesticide residues in food, some farmers do not wait long enough for the residues to wash off after spraying before harvesting. As a result, residues in food products have appeared as a result of increased pesticide use in agriculture. Some of the primary tactics for reducing human exposure to pesticides are pesticide safety, regulation of pesticide usage, appropriate application technology, and integrated pest management.

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Dissipation Kinetics and Risk Assessment of Thiamethoxam 25 % WG Residues in Vegetable Cowpea

Cited by 4 publications

References 12 publications

Dissipation Dynamics and Risk Assessment of Imidacloprid in Grape Berries Using LC- MS for Food Safety

Dissipation Dynamics and Risk Assessment of Imidacloprid in Grape Berries Using LC- MS for Food Safety

Determination of thiamethoxam residues and dissipation kinetic in tomato plants and its efficacy against Bemisia tabaci under open field eco system

Perspective Chapter: Current Situation of Insecticide Residues in Food Commodities and Possible Strategies for Management of Residues

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