Eco-friendly Management of Brinjal Mite (Tetranychus urticae Koch) by Some Biorational Approaches

Abstract

Aims: In order to assess the efficacy of several biorational techniques against brinjal mite, Tetranychus urticae Koch.
 Study Design: The study used a single component Randomized Complete Block Design (RCBD) with three replications.
 Place and Duration of Study: The experiment was conducted in the central farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh from October 2021 to February 2022.
 Methodology: The experiment consisted of seven treatments and was laid in a single factor Randomized Complete Block Design (RCBD) with three replications. Treatments viz. T1= Spinomax (0.4ml/L of water); T2= Neem Oil (5ml/L of water); T3= Biomax (1.2ml/L of water); T4= Ripcord (1ml/L of water); T5= Trichoderma sp. (200mg/L of water); T6= Mehogany Leaf Extract (200mg/L of water); T7= Absolute (Control).
 Results: Data on different parameters were collected for assessing results for this experiment. In case of experiment with different biorational control tactics, treatments showed varied response for mite pests. Trichoderma sp. (T5) showed best result which was then followed by Neem oil (T2) against mite pests infesting brinjal field. The results showed that in case of total number of fruit set, % healthy fruit was higher with the treatment of Trichoderma sp.
 Conclusion: In most cases, except control treatment, ripcord showed the worst results against mite pests. So, Trichoderma sp. @200 mg/L of water may be used for the eco-friendly management of brinjal mite.