Tliree Aphids Found in llassachusetts Apple Orchards 



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Rosy Apple Aphid 

 (Newly hatched nymph) "^ 



Green Apple Aphid 



(Newly hatched nymph) 



Vifinters as egr on apple and re- 

 mains on apple throughout sur.oer. iSggs 

 hatch v/hen buds burst, all nynphs usually 

 appearing v/ithin two or three days. Infested 

 foliage is stunted, curled and unhealthy. 

 Tips of branches and water sprouts are ..lost 

 heavily infested. Fruit near infested folia,^e 

 is covered with sooty i.iold from honeydev/ and 

 may be sniall. Easily controlled and considered 

 a pest of moderate importance. 



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Winters as egg on apple. Sv.vner gen- 

 erations on narrow-leaved plantain. First 

 eggs hatch when buds burst and nyraphs continue 

 to appear for about two weehs. Infested 

 foliage is badly curled, stunted and often 

 killed. Leaves and buds of fruit spurs are 

 frequently attacked, causing the fruit to be 

 small, dirty, and knotty v/ith a characteristic 

 puckered appearance at calyx. Difficult to 

 control and considered the most injurious of 

 apple ^phids - 



Apple Grain Aphid 

 (Newly hatched nymph) 



V/inters as egg on apple. Summer gen- 

 erations on grains and grasses. First eggs 

 hatch during wafm days in late mnter but 

 majority of nynphs appear when buds swell. 

 Infested foliage is slightly stunted c.nd 

 curled in spring. Leaves apples before petals 

 fall from blossoms and causes no injury to 

 fruit. Seldom warrants control treatments 

 and is not considered an important post of 

 apple . 



W. D. vVhitcomb 



