Effectiveness of New Acaricide Doses (Kingbo 6% SL), Neem Azal-T/S and Water Spray in Comparison to Organic Acaricides on Rose Plants Infested by Tetranychus spp. in Greenhouses in Varamin Region

With expanding greenhouse crop production and improper pesticides management, spider mite damages and resistance to acaricides increased rapidly. Alternative application of recommended acaricides is the solution to protect mite resistance and implement mite pest managements in the greenhouses. An investigation about four doses Kingbo 6% SL (0.4, 0.5, 0.6, 0.75), NeemaAzal-T/S (0.5, 0.75), Hexythiazox EC 10% (0.5), Abamectin EC 1.8 (0.75), along with water application treatments done in rose greenhouse hydroponics cultivation which by two spotted spider mite (Tetranychus urticae.) during 2007 in Varamin region. Complete block randomized designed in three replications and each replicate consisted 10 meters cultivated rose were used for evaluation treatments. Infested rose treated when observed 3 or more active mite stages under side rose leave with 10% rose leaves infestation. Sampling of 20 leaves from different parts of rose plants in each treatment done randomly and number active mite stages counted at interval of one day before and 1, 3, 7, and 10 days after treatments respectively. Collected data through Abbott formula converted into mortality% and analysis of variance on mean collected data carried out with SAS method. Grouping of the treatments done with DMRT method. Results of finding showed that, max. active mite and egg stages before treatments observed 12.28, and 8.02 in lateral side of greenhouses for Kingbo 0.4 dose and min 2.24 active stages, 2.8 eggs recorded for NeemAzal (0.75) and Abamection in middle part of greenhouse respectively. Lower (30%) and higher (48%) rose leaves infested by mites observed for Abamectin and Hexythiazox whereas rose leaves infested by mite eggs was found varied between 32 up to 56% for those treatments. NeemAzal (0.5), Abamection (0.75), Kingbo (0.4, 0.7), and water spray treatments caused higher mite mortalities of 67.11, 67.18, 69.36, 71.18 and 56.94 respectively. The maximum control% among sampling intervals recorded 67.03% three days after treatments. Application of Kingbo and NeemAzal as new acaricides did not produced any rose leaf burning effects. Therefore these treatments along with water spray application can recommend in integration mite management programme against rose spider mite in the greenhouse.