Evaluation of relative effectiveness of selective pesticides against Tetranychus urticae
			
	
 
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				Pmas-Arid Agriculture University, Rawalpind, 44000, Pakistan
				 
			 
										
				
				
		
		 
			
			
		
		
		
		
		
		
	
							
					    		
    			 
    			
    				    					Corresponding author
    					    				    				
    					Ahmad  Saeed   
    					Pmas-Arid Agriculture University, Rawalpind, 44000, Pakistan
    				
 
    			
				 
    			 
    		 		
			
																						 
		
	 
		
 
 
 
 
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ABSTRACT
Tetranychus urticae (Koch) (Acari: Tetranychidae) is a serious pest of many crops and vegetables in Pakistan including the brinjal crop. Brinjal crop suffers defoliation and fruit drop due to severe attacks of Tetranychus urticae about twice or thrice in a single growing season.  Several tools are used in the management of this pest, with chemical control being the most frequently exploited. Some low-risk pesticide options are available and included in IPM. To conclude the most effective acaricide, this study was planned in two growing seasons at two experimental locations. In this study, nursery of shamli, Jhansi and advanta was sown. Treatments were Oberon 240 SC (T1), Movento 240 SL (T2), Talstar 2.5 EC (T3), Chlorfenapyr 20 EC (T4), Control (T5) and Water Spray (T6). Data were recorded weekly. The parameters were mites population, fruit weight, number of fruits / plant, predator/ leaf and corrected % mortality. Maximum per unit yield i.e., 8.74, 7.97 & 6.06 kg of shamli, jhansi, and advanta respectively was achieved after foliar spray of Oberon at NARC Islamabad and 7.01, 6.86, and 5.52 kg of shamli, jhansi and advanta respectively at URF Koont. Maximum corrected % mortality was also observed in same treatment which are 77.4%, 74.5% and 74.7% at shamli, jhansi and advanta respectively at NARC and 79.3%, 69.2% and 73.4% at URF Koont. Oberon was also safer for predatory mites 0.5, 0.7 & 0.9 per leaf at NARC and 0.4, 0.6 & 0.5 at URF koont on shamli, Jhansi and advanta respectively as compared with other tested miticides which were 0.4, 0.2 and 0.5. These findings suggested that Oberon effectively controls the mite population and yield is remarkably increased.