tb1234 Aphid Control and Prevention aerial parts of the tree. It occasionally infests pyracantha, hawthorn, and pear. Woolly Aphids, like all other aphids, eat by sucking the sap off the plant they live on; however, while other aphids take it by inserting their long, needle-like mouth into the leaves of plants, woolly aphids have decided to go the hard way and do it stems. Sometimes, getting rid of aphids using commercial insect sprays, spider mite repellent, or other forms of insecticide causes harm to the plants while performing woolly aphid control. Rogers, N. Sharma, D.C. Stretton and J.T.S. Wooly apple aphids attack apple trees and other fruit trees, causing dieback, contaminated fruit, and other issues. Not suitable in heavy clay soils due to phytophthora susceptability. MM 106 was the standard rootstock in New Zealand until the 1990's, when medium density orchards of 660-800 trees/ha were the norm. Woolly apple aphid (WAA), Eriosoma lanigerum(Hausmann) (Homoptera: Aphididae) is an important insect that infests apple orchards worldwide (Ateyyat & Al-Antary, 2009), and is considered to be critical to the economics of the apple industry (Bus et al.,2007). Woolly apple aphid is a serious pest of apples, particularly young trees. My 3-year-old apple tree gets a soft fungus around the creases of the branches. Most species have a pair of tubelike structures called cornicles projecting backward out of the hind end of their body. The woolly apple aphid, Eriosoma Lanigerum, is a pest in many apple-growing countries. Infested nursery stock is also a source for spreading aphids. It is a true bug and sucks sap from plants. They are a small sap sucking insect that can cause enormous damage to Apple trees if left uncontrolled. Elm trees in the vicinity of orchards increase the migration of the aphid to apple trees. One of the major pests for apple trees are Woolly aphids. So, you will find them at the base of leaves of many trees. Photo Credit: Woolly Aphid image by Stephen Cresswell  /  bugguide.net. Fortunately, there are different ways of preventing an aphid infestation without damaging your flowers and shrubs. Do not be distressed by the appearance of this problem as it is very common on apple trees, particularly in the warmer, northern parts of Auckland. From the symptoms you describe, it appears you may have an infestation of woolly aphids. Lower, H.F. (1968). Summary:There is an increasing requirement to breed durable resistances to woolly apple aphid (WAA) into apple cultivars. After you have cleaned up the problem inspect the tree regularly to ensure there is not a repeat infestation. The content of this field is kept private and will not be shown publicly. You'll see fluffy, white, "woolly" blobs on the stems of your apple trees. Galls form favorable places for fungi to attack. During the era predominated by organophosphate use, it was not considered a serious pest, or at least one that was easily controlled. If you pull those woolly threads apart, you will see aphids sheltering inside. Use resistant rootstocks if possible. Yellow Newtown fruit frequently has aphids in the calyx end. Any suggestions please? Insect pests of crops, pasture and forestry, Introduced pests of pasture roots and foliage, Archives New Zealand - Te Rua Mahara o te Kāwanatanga, Creative Commons Attribution 3.0 New Zealand Licence, Creative Commons Attribution-NonCommercial 3.0 New Zealand Licence. Management: Begin by using a harsh water spray to blast the aphids off the undersides of the leaves. Rotorua, New Zealand: New Zealand Plant Protection Society, 59-63 Staubli A, Chapuis P, 1989. https://www.daltons.co.nz/questions-answers/insects-and-pests/wooly-aphids In New Zealand, it is considered a serious pest, causing reduced tree growth and contamination of fruit. Wallis (2009) New Zealand Plant Protection 62: 291-295; The impact of early season insecticides on biological control of apple leafcurling midge (Dasineura mali) Woolly apple aphids attack the young stems, roots and To aware apple growers of the state, Dr Rakesh Kumar, Department of Entomology, Dr YS Parmar University of Horticulture & Forestry, Nauni has come up with a detail suggestion of controlling the Woolly Apple Aphid. General Rules. feeding produces galls on stems and roots, which can About Apple woolly aphid. The woolly apple aphid (WAA), Eriosoma lanigerum (Hausmann) (Hemiptera: Aphididae) is a well-known pest of apple orchards world-wide. They may return during most years. Eriosoma lanigerum, the woolly apple aphid, woolly aphid or American blight, is an aphid in the superfamily Aphidoidea in the order Hemiptera. WAA can be found feeding on the roots as well as occurring in the tree canopy where it can appear as a white cottony mass on pruning scars or shoots. 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