HortiWorld

1.Insect- pest :-  The insects like san jose scale, wooly apple aphid, red spider mite, tissue borers and defoliating beetles and caterpillars in apple are important insects, which causes great damage to plants. San Jose scale (quadraspidiotus perniciosus) ∆It is a polyphagous pest which feeds on apple plants. The insect is covered with deep gray armature. ∆ By lifting the armature, a yellow coloured insect underneath is seen. The nymph and adults suck sap from aerial parts ∆ Heavily infested trees have bark covered with deep gray overlapping scales. The plant vigor is reduced which results in poor fruit setting and quality. Control :-  1.Spray 2 per cent dormant oil ( Servo orchard spray oil/ Hindustan petroleum spray oil ) or 1.5 per cent summer oil like orchex 796/ IPOL/shelter909 at half leaf to tight cluster stage. 2.If oil spray is not applied then spray with 0.04 % chlorpyriphos ( 200ml durmet in 100 L water) after petal fall to kill the crawlers and newly settled scale...