Bhartiya Krishi Anusandhan Patrika, volume 37 issue 4 (december 2022) : 343-349

Dissipation of Lambda-cyhalothrin 5% EC on Brinjal Fruit Grown in Gurugram, Haryana

S. Mishra, V.K. Pandey, S. Bansal, Vikash, M. Singh, S. Alam, L.K. Thakur
1Department of Analytical Division, Institute of Pesticide Formulation Technology, Gurugram-122 016, Haryana, India.
  • Submitted04-04-2022|

  • Accepted23-08-2022|

  • First Online 14-09-2022|

  • doi 10.18805/BKAP505

Cite article:- Mishra S., Pandey V.K., Bansal S., Vikash, Singh M., Alam S., Thakur L.K. (2022). Dissipation of Lambda-cyhalothrin 5% EC on Brinjal Fruit Grown in Gurugram, Haryana. Bhartiya Krishi Anusandhan Patrika. 37(4): 343-349. doi: 10.18805/BKAP505.
Background: The introduction of synthetic pesticides Lambda-cyhalothrinin for crop protection in general has significantly contributed to increased productivity. Lambda-cyhalothrin have been reported to cause toxic effects on humans, ranging from short-term effects such as headaches and nausea to chronic effects like cancer, reproductive damage and endocrine disruption. Lambda-cyhalothrin is a type-II highly active synthetic pyrethroid insecticide which contains a-cyano group. Lambda-cyhalothrin applied at the rate of 30 g a.i. ha-1 was found to be effective against shoot and fruit borer on brinjal.
Methods: The analytical method for the determination of Lambda-cyhalothrin 5% EC (Test Item) on brinjal was validated as per DG-SANTE 2019 guideline. The field trails including the dissipation study and final residue study were conducted in a randomized block design in open field. As per recommendation, dose of test item (T1= 15 g a.i/ha; T2 = 30 g a.i/ha) were 500 L/hectare for Trial. Lambda-cyhalothrin residues of brinjal samples were determined at 0, 1, 3, 5, 7 and 10 days at both application of recommended and double the recommended dose of test item. 
Result: The analytical method employed for determination of persistence residues of Lambda-cyhalothrin in brinjal was validated and found accurate and precise. The per cent dissipation of Lambda-cyhalothrin for the treatment T1 was 37.22% after 1 day which increased to 96.66% by 10th day, similarly for the double dose (T2) the initial dissipation was 57.14%, which increased to 99.7 % after 10th day. The half-life (T1/2) values of Lambda-cyhalothrin on brinjal were found to be 2.06 and 2.13 days for T1 and T2, respectively. 

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