Search Results

You are looking at 1 - 10 of 20 items for :

  • "eriophyid mite" x
  • Refine by Access: All x
Clear All
Open access

Katherine M. Solo, Sara B. Collins, Madalyn K. Shires, Ron Ochoa, Gary R. Bauchan, Liesel G. Schneider, Alan Henn, James C. Jacobi, Jean L. Williams-Woodward, M.R. Hajimorad, Frank A. Hale, John B. Wilkerson, Alan S. Windham, Kevin L. Ong, Mathews L. Paret, Xavier Martini, David H. Byrne, and Mark T. Windham

the eriophyid mite, Phyllocoptes fructiphilus Keifer ( Allington et al., 1968 ; Amrine et al., 1988 ; Bauchan et al., 2019 ; Gergerich and Kim, 1983 ), although the virus can be spread through grafting ( Amrine et al., 1988 ; Gergerich and Kim

Open access

H. Brent Pemberton, Kevin Ong, Mark Windham, Jennifer Olson, and David H. Byrne

Rose rosette disease is incited by a negative-sense RNA virus (genus Emaravirus ), which is vectored by a wind-dispersed eriophyid mite ( P. fructiphilus ) ( Di Bello et al., 2015a ; Laney et al., 2011 ). Symptoms on roses include witches broom

Free access

David H. Byrne, Patricia Klein, Muqing Yan, Ellen Young, Jeekin Lau, Kevin Ong, Madalyn Shires, Jennifer Olson, Mark Windham, Tom Evans, and Danielle Novick

: the RRV, the eriophyid mite ( P. fructiphilus ) vector, and the rose ( Amrine, 2014 ; Byrne et al., 2015 ; Windham et al., 2014 , 2016 ). All these vary in their genetics and are influenced by the environment ( Fig. 1 ). Fig. 1. Rose rosette disease

Full access

Karla M. Addesso, Anthony L. Witcher, and Donna C. Fare

all, and where they have, severity of damage may differ between related species and cultivars. However, several major pest groups that attack a wide range of woody host plants, including broad mite, spider mites, eriophyid mites, thrips, and whiteflies

Free access

Chad E. Finn, Andrew L. Thomas, Patrick L. Byers, and Sedat Serçe

)] and eriophyid mites ( Eriophyes spp.) were recorded in Missouri. The occurrence of an unidentified blossom blight that caused blossoms to turn brown before they opened was evaluated in Oregon. Fruit from this study was also used for separate fruit

Free access

Jacques Brodeur, M'hammed Bouaicha, and André Bouchard

In recent years, the tomato russet mite (TRM) [Aculops lycopersici (Acarina: Eriophyidae)] has become one of the more important pests of greenhouse tomatoes in northeastern North America. As a first step toward developing a biological control strategy for the TRM, our objective has been to test the potential of already commercialized mite predators. In laboratory experiments, voracity of Chrysopa carnea (Neuroptera: Chrysopidae), Phytoseiulus persimilis (Acarina: Phytoseiidae), and Amblyseius cucumeris (Acarina: Phytoseiidae) was determined for egg, immature, and adult stages of the TRM. The first two predator species did not prey on TRM, whereas A. cucumeris fed on each of the life stages of the eriophyid mite. Further experiments showed that A. cucumeris was able to develop and reproduce when feeding on TRM. Implication of these results for controlling TRM in greenhouses is discussed with respect to predator specificity and prey suitability.

Free access

John M. Ruter

Loropetalum chinensevar.rubrum, Chinese fringe-flower, was introduced into the United States in 1989 and quickly became on of the most popular plants in the nursery trade. Growth abnormalities (little-leaf disorder) became a problem on container-grown plants in pine bark substrates during the late 1990s. Symptoms are as follows: darkening of older growth, shortening of internodes, upward cupping of leaves, crinkling of new growth, particularly the distal part of the leaf, decrease in leaf size. In severe cases leaf necrosis occurs along with stem elongation, thus branches appear to be elongating without new leaves. Petioles become very short. Branchlets may also be reflexed or drooping. In Florida, an eriophyid mite has been touted as the causal agent for the disorder. On plants sampled from Georgia nurseries, eriophyid mites have never been detected. `Ruby' consistently has the problem, while it has also been noted on `Sizzling Pink' and `Suzanne'. Plants in the ground do not express the problem. There may be an element present in native soil that is not supplied in sufficient quantity in organic substrates. Foliage from a commercial nursery was sampled for micronutrients concentrations. Initial data indicated that copper, zinc, and nickel were low and could be causing the problem. In May 2005, a study was initiated at a commercial nursery in Grady County, Ga. Copper and zinc sulfate, along with nickel lignonsulfonate, was applied as foliar sprays to symptomatic plants of `Suzanne' growing in #5 containers. Within two weeks after treatment, plants sprayed with copper sulfate resumed normal growth. Control plants, or plants treated with zinc or nickel did not resume normal growth. A second study was initiated in June to evaluate different rates of copper sulfate and Kocide, a copper fungicide. Medium to high rates of copper sulfate and the high label rate of Kocide were effective. The plants in this study had severe symptoms and required repeat applications of copper. Further research is needed on appropriate formulations of copper, rates of application, and rates of incorporation into pine bark substrates to eliminate the problem.

Free access

Andrew L. Thomas, Patrick L. Byers, and Mark R. Ellersieck

, and phenological characteristics such as bloom time, fruit ripening, and harvest date. Individual berry weights were determined by counting and weighing, in bulk, 50 random ripe berries (fresh weight) per treatment plot. Eriophyid mites (Eriophyidae

Free access

Patrick L. Byers, Andrew L. Thomas, and Margaret Millican

leaf spot disease tentatively identified as Pseudomonas viridiflava Burkholder (Dowson). Eriophyid mites (Eriophyidae) were noted as a slight problem at both sites. Disease and mite susceptibility for ‘Wyldewood’ was not significantly different from

Open access

Bryan A. Connolly and Mark H. Brand

aromatica ‘Gro-Low’. ‘Gro-Low’ has been valued as a highly adaptable native groundcover, but Fusarium wilt ( Fusarium oxysporum ) and eriophyid mites have become widespread problems with this plant ( Creswell, 2019 ; O’Mara and Tisserat, 1997 ). Our new