Pesticide Residue Analysis of three Different Pesticides used against Helicoverpa Armigera (Hubner) in Tomato Crop

Saljoqi, Ahmad-Ur-Rahman; Amin, Sumayya; Merali, Salim; Nawaz, Taufiq; Anjum, Farida

doi:10.17582/journal.sja/2022/38.2.448.455

Cited by 2 publications

(1 citation statement)

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“…Additionally, [ 34 ] stated that imidacloprid increased the tomato fruit yield compared to the control when used against Tuta absoluta . In addition, [ 35 ] found that the highest yield and lowest content of mean pesticide residue (0.054%) was recorded in plots treated with imidacloprid.…”

Section: Resultsmentioning

confidence: 99%

Dissipation and Residues of Imidacloprid and Its Efficacy against Whitefly, Bemisia tabaci, in Tomato Plants under Field Conditions

et al. 2022

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The whitefly, Bemisia tabaci, is the main pest for many field and horticultural crops, causing main and significant problems. The efficiency of imidacloprid insecticide as seed treatment and foliar spray at three rates against the whitefly, B. tabaci, was evaluated in tomato plants under field conditions; in addition, insecticide residues were determined in tomato leaves and fruits. The obtained results revealed that the seedlings produced from treated seeds with imidacloprid were the most effective treatment in decreasing whitefly stages. Reduction percentages of whitefly stages in seedlings produced from treated seeds and sprayed with ½, ¾ and 1 field rates of imidacloprid were more than that produced from untreated seeds. Tomato fruit yield in seedlings produced from treated seeds and sprayed with one recommended rate of imidacloprid was more than that of untreated seeds. The residues of imidacloprid in leaves and fruits in seedlings produced from treated seeds and sprayed with field rate were more than that of untreated seeds; additionally, the residues were higher in leaves than in fruits. The residual level in fruits was less than the maximum residual level (MRL = 1 mg kg−1) of the Codex Alimentarius Commission. The half-life (t ½) was 6.99 and 6.48 days for leaves and fruits of seedlings produced from treated seeds and 5.59 and 4.59 days for untreated seeds. Residues in tomato fruits were less than the MRL, therefore, imidacloprid is considered an unconventional insecticide appropriate for B. tabaci control that could be safe for the environment.

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Section: Resultsmentioning

confidence: 99%