Aphids belong to the family of Aphididae. They are a group of sap-sucking, soft-bodied insects and are about the size of a pinhead. Aphids are most passionate, prolific and damaging. They are one of the serious plant pests and they hinder plant growth, transmit plant diseases, and lead to the deformation of leaves, flowers, buds, roots, and sap. There are about 6000 aphid species found in North America alone. Rosy apple aphid is one of several aphid species that can occur on apple trees and is generally the most damaging.
Rosy apple aphid is a tiny soft-bodied sap-sucking insect that feeds on apple foliages and fruits during spring and early summer. They are one of the major agricultural pests when it comes to apple. Even small numbers of aphids can cause significant damage to these fruits. The body of aphid has a waxy coating and usually a slight purplish or rosy tint. Rosy apple aphids lay oval-shaped eggs in bark crevices and around the buds of shoots of apple trees in autumn. When first laid the eggs are bright yellow that gradually changes to greenish yellow and finally within two weeks to shiny jet black. These eggs hatch in spring as the leaves begin to emerge from the buds.
Colonies of pinkish grey aphids develop on the underside of the foliage. Affected leaves at the shoot tips become curled and yellowish. Heavily infested shoots show curbed growth with distorted leaves which start to turn brown during the summer season. Also, the prolonged sucking of sap destroys the normal growth of fruits. While sucking up sap, the aphids secrete chemicals into the foliage with the help of its saliva, which causes the distorted growth and also develops a sooty mold on fruits and leaves. Systemic effect of malignant saliva also leads to reduced growth of roots, photosynthesis, and other woody tissues. Damage can be most severe on young trees where shoots are affected badly leading to permanent damage to the plant. The fruits attacked by aphids often remain small in size with a pinched appearance around the eye end which is formed in the growing season.
Rosy apple aphids are capable of attacking all apple varieties; therefore it is essential for apple growers to monitor their trees carefully for rosy apple aphids. A few colonies are potent of rapidly infesting the entire tree. Rosy apple infestations often go unnoticed until the leaf curl damage is observed. As control becomes extremely difficult in the later stages, aphids are best controlled at the pink stage of bud development, before the serious leaf curl has occurred. It is reported that these noxious insects can cause 50% of fruit injury in severe cases and are most difficult to control.
To tackle this problem of aphids various methods have been tried and tested, the conventional toxic chemicals, pesticides are no longer effective in protecting the attack of these vile pests and also pollute the soil, groundwater reserves and harm the beneficial species like bees, earthworms etc. The use of pyrethrins as a pesticide destroys the aphid predators and parasites leading to the surplus gathering of aphids. Also, there are reported incidences of insects becoming resistant to many toxic pesticides. Unlike these chemicals, CTech Corporation’s product Termirepel™ is the best solution to deal with the problem of these pests. Termirepel™ is non-toxic, non-carcinogenic, non-hazardous and environment-friendly insect repellent. Termirepel™ works against 500 species of insects. Termirepel™ is available in form of solid masterbatches, liquid form, and lacquer. The product does not kill the target species; it just repels them.
It follows 6 tiered mechanism, which is extremely effective on insects like aphids, ants, beetles, grasshopper, termites etc. It does not volatilize and does not degrade the soil. It is RoHS, RoHS2, REACH, APVMA, NEA compliant and FIFRA exempted. Termirepel™ masterbatch can be incorporated in agricultural films, mulches, etc. during polymer processing which would provide protection from the pesky aphids. The liquid concentrate and the lacquer can be coated on the fencing, tree guards etc.