• Nymph and adults suck the sap from leaves and petioles
• Affected leaves become curled and fall
• Blossoms and young fruits drop pre maturely
• Affected fruit setting

• Aphids are dark green to chocolate brown coloured

Green peach aphid, Myzus persicae

• Nymph and adults suck the sap from leaves , new shoots, fruits and flower buds
• Infested leaves become pitted and curled
• Young fruits are shriveled and drop pre maturely
• Fruit setting affected in severe infestation
• Its transmits plum pox virus

• Adults are pale yellowish green or pink with three dark lines on the back of a abdomen

• Remove and destroy the damaged plant parts along with nymphs and adults
• Encourage parasitoid, Aphelinus mali and predators, Coccinella septumpunctata and Bacillus eucharis
• Spray dimethoate 0.03% or methyl demeton 0.025%

Peach twig borer, Anarsia lineatella

• Caterpillar damages twigs of peach, plum and apricot
• Eggs are laid on shoots, twigs and fruits
• After egg hatching the larvae bores into pith of twigs and fruits
• Fruit damage is more serious

• Larva – matured larvae reddish brown in colour and has a black colour head
• Adult – brown in colour and black colour line present on the both forewings and hind wings

Peach borer, Sphenoptera lafertei

• Beetle feed on leaves
• Young grubs bore into and feed inside bark and make irregular galleries
• Gum globules appear at the points of entrance on bark

• Collect and destroy the damaged shoots and branches
• Swab trunk with carbaryl 50 WP at 0.2%
• Spray malathion 0.1% .
• Field release of some natural enemies like gray field ant , Formica aerata, chalcid wasps, Copidosoma (=Paralitomastix) varicornis and Hyperteles lividus,
• Spray application of Bacillus thuringiensis (Bt) products have been effective if applied when larvae are first noticed and before they tunnel into twigs, buds or fruit.
• Spray application of following insecticides

San jose scale, Qudraspidiotus perniciosus

• San Jose scales cause injury by feeding on twigs, branches, and fruit; they may also inject salivary toxins while feeding.
• Heavy populations on the bark can cause gumming and kill twigs, branches, and entire trees if left uncontrolled.
• A characteristic, red halolike discoloration often forms around the insect on small twigs or infested fruit.
• Fruit with haloes will be culled because of its unsightly appearance.

• Female scale is yellowish orange, round, slightly convex and raised a little at the centre with a black pustule
• Males are small and more linear shape

• Select nursery stock free from scale infestation
• Fumigate nursery stocks with HCN gas or methyl bromide
• Spray application of systemic insecticides like phosalone 0.05%, fenitrothion 0.05% and methyl demeton 0.025%
• Field release of coccinellid predators like Chilocorus nigritus and parasitoid Encarsia perniosi

SOURCE

www.ipm.ucdavis.edu, www.apidweb.com, ag.arizona.edu