Field Evaluation of Thiamethoxam 25 Wg Against Sucking Pests in Okra

Karthik, P.; Vinothkumar, B.; Kuttalam, S.

doi:10.29321/maj.2020.000375

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…These results shows that the relative preference of leafhopper changes with the stages of the crop. These findings are in line with Senapati and Khan (1978) who reported that okra at 7-14 weeks was most suitable for leafhopper and plant around maturity stage appears to be more susceptile than other stages and also present findings are conformity with the Senapati and Mohanty (1980) increase in the population of leafhopper from second week of December reaching a peak during first week of January, there after it declined.…”

Section: Resultssupporting

confidence: 92%

Studies on population dynamics of major pests of okra

D H,

G S

et al. 2024

JFM

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Okra [Abelmoschus esculentus (L.) Moench] is known tobe infested by many insect pest among them the most important onesare sucking pests like aphids, leafhopper, whitefly and fruit borerslike Earias vitella and Helicoverpa armigera. Controlling these pestsis very much important to obtain good yield, hence knowledge aboutthese pest incidence needed for taking up management practices. Inthis context, okra was sown during last week of November (rabi2020-21) and observations were recorded at weekly interval. Peakincidence of aphid (23.44 aphids/3 leaves) and leafhopper (16.97leafhopper/3 leaves) noticed during last week of December, whitefly(12.70 whiteflies/3 leaves) during second week of March. Fruit borersduring third week of February and second week of March with percent fruit damage of 44.9 (Earias vitella) and 13.59 (Helicoverpaarmigera).Sucking pests incidence more up to 10th week old crop,there after the population declined. In case of fruit borers, theypersisted upto end of the season

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Section: Resultssupporting

confidence: 92%

Studies on population dynamics of major pests of okra

D H,

G S

et al. 2024

JFM

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“…Kalyan et al [12] also reported NSKE 5% comparatively higher per cent reduction in population of whiteflies in compared to entomopathogenic fungus. Ramarethinam et al [13], Naik and Shekharappa [14], Naik et al [10] and Saha [15] also reported V. lecanii to be effective against whitefly population and other homopterous, which corroborate the present findings.…”

Section: Effect Of Biopesticides Against Whitefly (Bemisia Tabaci Gen...supporting

confidence: 90%

Efficacy of Biopesticides against Whitefly, (Bemisia tabaci Gennadius) on Okra [Abelmoschus esculentus (L.) Moench] in Northern Madhya Pradesh, India

Lal,

Vishwakarma

2024

JSRR

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An experiment was conducted in the field, Department of Entomology, RVSKVV, College of Agriculture, Gwalior (M.P.) in Kharif- 2018 and 2019.Efficacy of biopesticides against whitefly on okra. Experiment was laid out in Randomized Block Design with eight treatments. Biopesticides used in the experiments were Beauveria bassiana @ 0.5 kg/ha, Verticillium lecanii@ 1.0 kg/ha, Neem oil 5% @ 2.5 litre, Neem leaf extract 5% @ 25 kg/ha, NSKE 5% @ 25 kg/ha, Garlic clove extract 5% @ 25 kg/ha and Panchgavya 3% @15 litre/ha. All the biopesticides treatments were found significantly effective in reducing the population of whitefly over control untreated plots (11.73 whiteflies/six leaves). Among the biopesticides treatments, NSKE 5% (4.67 whiteflies/six leaves)found most effective in reducing the whitefly population followed by neem oil 5%(4.88 whiteflies/six leaves), V. lecanii (5.20 whiteflies/six leaves), neem leaf extract 5% (5.49 whiteflies/six leaves) and garlic clove extract 5% (5.68 whiteflies/six leaves). Whereas, panchgavya 3% (8.59 whiteflies/six leaves) was found least effective in both the years. Data computed on per cent reduction in whitefly population indicate that 26.8 to 60.2% population may be reduced by spraying of different biopesticides. The highest fruit yield (119.56 q/ha) was recorded in NSKE 5% followed by B. bassiana and neem oil 5%. Whereas, minimum fruit yield was recorded in panchgavya 3% in both the years. The highest net profit (27,128 Rs/ha) was obtained from the plots treated with B. bassiana followed by NSKE 5% (25,938 Rs/ha) and maximum benefit ratio in the B. bassiana (1:14.13) followed by V. lecanii (1:8.36), NSKE 5% (1:8:11) and garlic clove extract 5% (1:6.78).

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“…Pandey (2018) found that thiamethoxam 25 WG @ 0.006% was effective against aphids, leaf hoppers, and white fly on okra plants. Also, Karthik et al (2020) found that thiamethoxam 25% WG at 25 g a.i. /ha was highly effective against whitefly after the first and second spray and minimized the spraying numbers, so that, it reduces environmental pollution and human hazards, as well as to compare seed treatment and foliar spraying.…”

Section: Discussionmentioning

confidence: 96%

“…Also, Liang et al (2015) found that thiamethoxam significantly reduced the average number of aphids on plants. Recently, Karthik et al (2020) found that thiamethoxam 25% WG at 25 g a.i. /ha was highly effective against whitefly after the first and second spray and minimized the spraying numbers, so that, it reduces environmental pollution and human hazards.…”

Section: Thiamethoxam Residues and Disappearance In Tomato Fruitsmentioning

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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Field Evaluation of Thiamethoxam 25 Wg Against Sucking Pests in Okra

Cited by 4 publications

References 3 publications

Studies on population dynamics of major pests of okra

Studies on population dynamics of major pests of okra

Efficacy of Biopesticides against Whitefly, (Bemisia tabaci Gennadius) on Okra [Abelmoschus esculentus (L.) Moench] in Northern Madhya Pradesh, India

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

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