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Girdled pecan twig Twig girdler on pecan twig This beetle is widely known for the damage it causes to pecan plantations, but also to lumber trees such as hickory , oak , poplar and elm . In late summer and fall, the adult female girdles small branches, 1 ⁄ 4 -to- 1 ⁄ 2 -inch (6.4 to 12.7 mm) diameter, with its mandibles, cutting through the ...
The hickory spiral borer kills many seedlings and young trees, and the pecan carpenterworm degrades both trees and logs. The twig girdler (Oncideres cingulata) attacks both small and large trees; it seriously deforms trees by sawing branches. Sometimes, these girdlers cut hickory seedlings near ground level.
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Various insects feed on the leaves, stems, and developing nuts. These include ambrosia beetles, twig girdlers, pecan nut casebearer, hickory shuckworm, phylloxera, curculio, weevils, and several aphid species. In the Southeastern U.S., nickel deficiency in C. illinoinensis produces a disorder called "mouse-ear" in trees fertilized with urea. [32]
It is closely related to the pecan, sharing similar leaf shape and being classified in the same section of the genus Carya sect. Apocarya, but unlike the pecan, it does not have edible nuts. It is most readily distinguished from the pecan by the smaller number of leaflets, with many leaves having only 7 leaflets (rarely fewer than 9, and often ...
Twig borer refers to a number of species of beetles and moths that chew holes into small branches of trees and shrubs. Many of these insects are agricultural pests . Animals that are called twig borers include:
A twig is a thin, often short, branch of a tree or bush. [1] The buds on the twig are an important diagnostic characteristic, as are the abscission scars where the leaves have fallen away. The color, texture, and patterning of the twig bark are also important, in addition to the thickness and nature of any pith of the twig. [2]
Diseases that primarily or exclusively impact pecan trees. Pages in category "Pecan tree diseases" The following 13 pages are in this category, out of 13 total.