Comparison two new botanical pesticides effects with two old acaricides in control of greenhouse eggplant infested by Tetranychus urticae Koch in Varamin region

Subject Areas : entomology and othea arthropods

Masoud Arbabi ¹ ( موسسه تحقیقات گیاه پزشکی کشور )
Mojtaba Khani ² ( Iranian Res. Inst. Plant Protection, Tehran )
Zinab Tajik ³ ( کارشناس گیاهپزشکی، کلینک گیاه پزشکی اشیان سبز، ورامین )
Sosan Hassenzadeh ⁴ ( کارشناس گیاهپزشکی، کلینک گیاه پزشکی اشیان سبز، ورامین )
maryam negahban ⁵ ( 3- Assistant Professor of Pesticide Research Department, Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran )

Received: 2023-10-31 Accepted : 2024-01-13 Published : 2022-11-22

Keywords:

Abstract :

Eggplant greenhouse cultivations in last two /three years found under progressing and intensive spider mite damages observed for the first time in Varamin region.  Effects of two new botanical pesticides, Mariapro+Coverino-M, Bio-2, in comparison of propargite 57% EC and tetradifon v/w 7.52% were evaluated against Tetranychus urticae red color population on round black eggplants variety 1574 in greenhouse during spring season of 2021 in Varamin region. Spraying of treatments done with wheel burrow sprayer and effects of the them carried out by random 15 leaves collected from each treatment at one day before and 3,7and 15 days after. Mite active stages on 2cm2 on middle under side of eggplant leaf recorded by help of stereomicroscope. Abbott formula used to convert raw data in to mortality%. Mean mite mortality% of treatments analyzed with SAS software. Minimum and maximum mean active mite stages for 2ml/l Tetradifon (25.83 mites) and 1.5 ml/l of Bio-2 (44.50 mite) recorded respectively. Pesticide control effects showed a statistical significant (p<0.05) at different interval times. Higher effects (100%) for both propargite doses recorded at 3rd and 7th day of interval periods and least mortality% (58.92%) observed for tetradifon 2ml/l at 15 days’ interval time. Low slop mite mortality% found at decreasing level until 15 days for most of treatments. Spraying old registered acaricides recommended at higher spider mite infestation before harvesting period. Both new botanical pesticides can provide mite control damages during eggplant fruiting time and producing organic vegetables under greenhouses.