نتایج جستجو برای: elm leaf beetle

تعداد نتایج: 98200  

Journal: :Journal of economic entomology 2003
Thomas E Hunt Leon G Higley Fikru J Haile

The imported longhorned weevil, Calomycterus setarius Roelofs, is an occasional pest of soybean, Glycine max (L.), and can cause substantial defoliation of seedling soybean when the weevil is present in large numbers. Because weevil populations can reach high levels, the potential exists for significant seedling injury, so economic injury levels (EILs) are needed for imported longhorned weevil ...

2012
Joakim Hjältén E. Petter Axelsson Thomas G. Whitham Carri J. LeRoy Riitta Julkunen-Tiitto Anders Wennström Gilles Pilate

One main aim with genetic modification (GM) of trees is to produce plants that are resistant to various types of pests. The effectiveness of GM-introduced toxins against specific pest species on trees has been shown in the laboratory. However, few attempts have been made to determine if the production of these toxins and reduced herbivory will translate into increased tree productivity. We esta...

Journal: :Ecology letters 2009
Shunsuke Utsumi Yoshino Ando Takayuki Ohgushi

Much attention has been paid to ecology and evolution of damage-induced plant responses. Recently, it has been emphasized that phenotypic plasticity, such as induced plant responses, has the potential to lead to evolutionary changes of interacting partners. Here, we report that induced plant regrowth promotes a locally adaptive feeding preference of a leaf beetle, Plagiodera versicolora. We fou...

Journal: :journal of crop protection 2015
afsaneh mazaheri jahangir khajehali kashkouli marzieh bijan hatami

laboratory and field experiments were conducted to determine the efficacy of some insecticides on the control of sarta longhorned beetle, aeolesthes sarta solsky adults and larvae. in the laboratory, three pairs of mated and non-oviposited adults were released on the logs of field elm, ulmus minor mill that had been treated with chlorpyrifos, carbaryl, permethrin or imidacloprid. in the field e...

2017
Wojciech L. MAGOWSKI Ali AHADIYAT Hadi OSTOVAN

* Correspondence: magowski@amu.edu.pl Bark beetles (Coleoptera: Curculionidae: Scolytinae) are one of the most important pests of woody plants, with immense economic impact, attacking unthrifty, broken, over-mature, dying, or, rarely, even healthy hosts (Wood, 1982). Among bark beetle species, the larger European elm beetle, Scolytus scolytus (Fabricius, 1775), the smaller European elm beetle, ...

1999
JAMES L. SHERALD

Bacterial leaf scorch is caused by Xylella fastidiosa Wells et al. The pathogen causes chronic leaf scorch and decline in elm, oak, sycamore, and maple. X. fastidiosa has a wide host range and is responsible for many other serious diseases including Pierce's disease of grape, phony disease of peach, and citrus variegated chlorosis. Its role in shade tree disorders has only recently been recogni...

2006

Anthracnose is one of the most common and important foliage diseases of shade trees in Iowa. Symptoms of anthracnose are often referred to as “leaf blights” or “leaf spots” and are most serious on sycamore, ash, maple, white and bur oak, and walnut. Linden, hickory, elm, red and black oak, and other deciduous trees also are susceptible, although anthracnose is less common and damaging on these ...

2002
IAN KAPLAN MICKY D. EUBANKS

Red imported Þre ants, Solenopsis invicta (Buren) (Hymenoptera: Formicidae), are an invasive species found in high densities throughout southeastern agricultural systems. We tested the hypothesis that Þre ants tend cotton aphids, Aphis gossypiiGlover (Homoptera: Aphididae), and thus release them from predation by lady beetle larvae, Coccinella septempunctata L. and Hippodamia convergens Guerin-...

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