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	Post-flowering treatment for the apple blossom weevil - FRC Randwijk
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	
	

















	


	
	
	
	









	

				
	

		

		
Post-flowering treatment for the apple blossom weevil

        
		
            
            

                
In the run-up to flowering, treatments against the apple blossom weevil were carried out on many plots, including at FRC Randwijk. Now that the trees are finishing flowering, the damage caused by the remaining weevils on the flower clusters is becoming increasingly apparent. Flowers in which the apple blossom weevil has laid an egg did not open during flowering and are now beginning to turn brown (see photo below).


These ‘capsules’ contain the new generation of beetles. Upon hatching, the beetles will feed for a number of weeks, after which they will seek shelter to enter summer dormancy. This feeding period shortly after hatching presents an opportunity to carry out control measures. This can reduce the pressure on the following season. As this is a short control window, it is important that the positioning of this spray application is correct to ensure optimal effectiveness.


 


            

        



        

            
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