scholarly journals Management of Pests, Plant Diseases and Abiotic Disorders of Magnolia Species in the Southeastern United States: A Review

2012 ◽  
Vol 30 (4) ◽  
pp. 223-234 ◽  
Author(s):  
Gary W. Knox ◽  
William E. Klingeman ◽  
Mathews Paret ◽  
Amy Fulcher

The genus, Magnolia, encompasses a group of about 240 species of evergreen or deciduous trees and large shrubs. Magnolias are native to temperate, subtropical and tropical areas of southeastern Asia, eastern North America, Central America, the Caribbean and parts of South America. Native and nonnative Magnolia species have become prominent landscape plants in the southeastern U.S. due to their beauty, utility, relative ease of maintenance and broad adaptability to the region's climate and soils. Species introductions, breeding and selection programs over the last 50 years have produced superior selections with improved flowering, new flower colors and ornamental foliage and buds often featuring brown, copper or gold indumentum. Magnolia health and pest management is sometimes overlooked in both landscape and production settings because magnolia is considered to have relatively few pest and disease problems. Some abiotic disorders may mimic biotic damage or may render magnolia more susceptible to pests and diseases. When they occur, abiotic disorders, pests or diseases on magnolia can cause significant economic or aesthetic losses. This review focuses on magnolia culture in production and landscape settings with an emphasis on major pests, plant diseases and abiotic disorders affecting management of Magnolia species.

2014 ◽  
Vol 32 (2) ◽  
pp. 84-102
Author(s):  
William E. Klingeman ◽  
Sarah A. White ◽  
Anthony LeBude ◽  
Amy Fulcher ◽  
Nicole Ward Gauthier ◽  
...  

The genus Viburnum encompasses a group of about 150 species of evergreen, semi-evergreen or deciduous trees and large shrubs. Viburnums are native to temperate, subtropical and tropical areas of southeastern Asia, eastern North America, Central America, the Caribbean and parts of South America. Native and nonnative Viburnum species have become prominent landscape plants in the southeastern United States due to their beauty, utility, relative ease of maintenance and broad adaptability to the region's climate and soils. Efficient management of viburnum pests to maintain healthy viburnum plants in nurseries and landscape settings is crucial for sustaining the economic competitiveness and profitability of green industry professionals competing in the horticulture marketplace. Diversity of species within the genus, however, is vast, and can contribute to many host-pest complexes that differ among growing environments and cause severe economic or aesthetic losses. Additionally, some abiotic disorders may mimic biotic damage or may render viburnum more susceptible to pests and diseases. This review focuses on viburnum culture in production and landscape settings with an emphasis on major insect and mite pests, plant diseases and abiotic disorders affecting management of Viburnum species in nursery and landscape settings.


Zootaxa ◽  
2008 ◽  
Vol 1710 (1) ◽  
pp. 1 ◽  
Author(s):  
MOLLY G. RIGHTMYER

The cleptoparasitic bee genus Triepeolus is a widespread, species-rich group that has never been revised throughout its geographic range. Herein I review 103 species of Triepeolus, including all but those that belong to the newly defined Triepeolus verbesinae and Triepeolus simplex species groups (these will be the topic of a subsequent paper). I present three keys to the species, which together cover the genus throughout its range in the New World; the keys are to the females of North and Central America, the males and females from Eastern North America, and the males and females from South America and the Caribbean. I propose the following 37 new species: Triepeolus antiochensis, T. argentimus, T. argus, T. bimorulus, T. charlesi, T. circumculus, T. claytoni, T. cruciformis, T. diffusus, T. dilutus, T. edwardi, T. engeli, T. exilicurvus, T. flavigradus, T. fulgidus, T. griswoldi, T. interruptus, T. isohedrus, T. jennieae, T. joliae, T. lateralis, T. margaretae, T. mauropygus, T. melanarius, T. micheneri, T. nayaritensis, T. parkeri, T. partitus, T. parvidiversipes, T. parvus, T. perpictus, T. phaeopygus, T. punctoclypeus, T. quadratus, T. simulatus, T. vernus, and T. warriti, and propose the new combinations Triepeolus laticeps (Friese), Triepeolus tepanecus (Cresson) and Triepeolus zacatecus (Cresson). I newly synonymize 45 of the 169 previously proposed Triepeolus names, for a total of 51 synonymies: T. alachuensis Mitchell under T. rufithorax Graenicher; Epeolus albopictus Cockerell, E. costaricensis Friese, and E. flavocinctus Friese under T. aztecus (Cresson); T. alpestris Cockerell, T. amandus Cockerell, and T. vandykei Cockerell and Sandhouse under T. paenepectoralis Viereck; E. bardus Cresson, T. mesillae Cockerell, and T. pimarum Cockerell under T. distinctus (Cresson); T. brunneus Cockerell under T. balteatus Cockerell; T. charlottensis Mitchell under T. brittaini Cockerell; T. cirsianus Mitchell under T. donatus (Smith); T. concinnus Cockerell under T. townsendi Cockerell; T. coquilletti Cockerell, T. helianthi arizonensis Cockerell, T. helianthi pacificus Cockerell, T. lineatulus Cockerell and Sandhouse, and T. maculiventris Cockerell under T. helianthi (Robertson); T. dichropus Cockerell, T. eldredi Cockerell, T. helianthi grandior Cockerell, T. pallidiventris Cockerell and Sandhouse, T. rectangularis Cockerell, and T. wyomingensis Cockerell under T. texanus (Cresson); T. digueti Cockerell and E. nobilis Friese under T. intrepidus (Smith); T. floridanus Mitchellunder T. georgicus Mitchell; T. fortis Cockerell, T. insolitus Cockerell, and T. trilobatus Cockerell under T. martini (Cockerell); T. foxii Cockerell under T. rufoclypeus (Fox); T. lestes Cockerell under T. subalpinus Cockerell; T. loganensis Cockerell and T. sandhousae Cockerell under T. fraserae Cockerell; T. nautlanus Cockerell under T. lunatus (Say); E. nigriceps Smith under T. robustus (Cresson); E. oswegoensis Mitchell under T. pectoralis (Robertson); T. perelegans Cockerell and T. trichopygus Cockerell and Timberlake under T. penicilliferus (Brues); T. signatus Hedicke under T. ventralis (Meade-Waldo); T. stricklandi Cockerell under T. subalpinus Cockerell; E. superbus Provancher and E. texanus nigripes Cockerell under T. remigatus (Fabricius); and E. utahensis Cockerell under T. heterurus (Cockerell and Sandhouse).


2016 ◽  
Author(s):  
R. Lynn Von Hagen ◽  
Rafia A Khan ◽  
Stefan Woltmann

The Louisiana Waterthrush (Parkesia motacilla) breeds along wooded streams throughout much of eastern North America, and winters in the Caribbean and Central America. Because of its dependence on stream macroinvertebrates—which are themselves dependent on high water quality—the Louisiana Waterthrush may serve as a useful bioindicator of both stream and landscape integrity. Perhaps unique among eastern North American songbirds, the Louisiana Waterthrush often maintains essentially linear territories along streams, and this provides a unique context in which to ask questions about the genetic (as opposed to social) mating system of this species. We developed 15 microsatellite loci for Louisiana Waterthrush using MiSeq sequencing. All loci presented here are polymorphic, with 3-15 alleles detected in a reference sample of 35-43 individuals. For parentage analyses, these loci have a combined non-exclusion probability of 0.0011 if neither parent is known a priori, and a non-exclusion probability of < 0.0001 if one parent is known. These 15 loci thus provide high discriminatory power to assign parentage to nestlings, and can also be used to examine population genetic structure within the species.


2016 ◽  
Author(s):  
R. Lynn Von Hagen ◽  
Rafia A Khan ◽  
Stefan Woltmann

The Louisiana Waterthrush (Parkesia motacilla) breeds along wooded streams throughout much of eastern North America, and winters in the Caribbean and Central America. Because of its dependence on stream macroinvertebrates—which are themselves dependent on high water quality—the Louisiana Waterthrush may serve as a useful bioindicator of both stream and landscape integrity. Perhaps unique among eastern North American songbirds, the Louisiana Waterthrush often maintains essentially linear territories along streams, and this provides a unique context in which to ask questions about the genetic (as opposed to social) mating system of this species. We developed 15 microsatellite loci for Louisiana Waterthrush using MiSeq sequencing. All loci presented here are polymorphic, with 3-15 alleles detected in a reference sample of 35-43 individuals. For parentage analyses, these loci have a combined non-exclusion probability of 0.0011 if neither parent is known a priori, and a non-exclusion probability of < 0.0001 if one parent is known. These 15 loci thus provide high discriminatory power to assign parentage to nestlings, and can also be used to examine population genetic structure within the species.


EDIS ◽  
2020 ◽  
Vol 2020 (2) ◽  
Author(s):  
Elena Karlsen-Ayala ◽  
Matthew Edward Smith

The aptly named <i>Macrocybe titans</i>, meaning "giant head," is the largest known gilled mushroom in the Western Hemisphere. This species was originally described from Florida but can be found across the southeastern United States as well as the Caribbean, Central America, and parts of South America. These mushrooms are often found in clusters with the caps growing as large as 3 ft wide and 1&ndash;1.5 ft tall! This species was first discovered in Gainesville, Florida, and is generally found near buildings or roads. This new three-page publication of the UF/IFAS Plant Pathology Department describes these giant mushrooms, their discovery, and where to find them. Written by Elena Karlsen-Ayala and Matthew E. Smith.<br /><a href="https://edis.ifas.ufl.edu/pp356">https://edis.ifas.ufl.edu/pp356</a>


Author(s):  
Walter D. Mignolo

This book is an extended argument about the “coloniality” of power. In a shrinking world where sharp dichotomies, such as East/West and developing/developed, blur and shift, this book points to the inadequacy of current practices in the social sciences and area studies. It explores the crucial notion of “colonial difference” in the study of the modern colonial world and traces the emergence of an epistemic shift, which the book calls “border thinking.” Further, the book expands the horizons of those debates already under way in postcolonial studies of Asia and Africa by dwelling on the genealogy of thoughts of South/Central America, the Caribbean, and Latino/as in the United States. The book's concept of “border gnosis,” or sensing and knowing by dwelling in imperial/colonial borderlands, counters the tendency of occidentalist perspectives to manage, and thus limit, understanding. A new preface discusses this book as a dialogue with Hegel's Philosophy of History.


2020 ◽  
Vol 63 (11) ◽  
pp. 84-89
Author(s):  
Gerardo Torres Zelaya

Sign in / Sign up

Export Citation Format

Share Document