scholarly journals Herbicides for Weed Control in Eucalyptus Culture

EDIS ◽  
2013 ◽  
Vol 2013 (6) ◽  
Author(s):  
Anna Osiecka ◽  
Patrick Minogue
Keyword(s):  
United States ◽  
Weed Control ◽  
Southeastern United States ◽  
Forest Resources ◽  
Eucalyptus Species ◽  
Vegetation Control ◽  
Fast Growing ◽  
The World ◽  
Ornamental Trees ◽  
Hybrid Clones

Eucalyptus is a diverse genus with over 700 species, most of which are native to Australia. Numerous Eucalyptus species and hybrid clones have been introduced in temperate climates throughout the world and grown as ornamental trees as well as for fuel and fiber. There is renewed interest in planting this fast-growing tree in the southeastern United States for mulch, pulpwood, and bioenergy. However, several silvicultural challenges exist, and competing vegetation control is a significant one. This 7-page fact sheet was written by Anna Osiecka and Patrick Minogue and published by the UF Department of School of Forest Resources and Conservation, February 2013. http://edis.ifas.ufl.edu/fr378

scholarly journals The Practice and Potential of Agroforestry in the Southeastern United States

EDIS ◽  
1969 ◽  
Vol 2004 (8) ◽  
Author(s):  
Sarah W. Workman ◽  
Samuel C. Allen
Keyword(s):  
United States ◽  
Land Management ◽  
Southeastern United States ◽  
White Paper ◽  
Forest Resources ◽  
Management Tool ◽  
University Of Florida ◽  
Agricultural Sciences ◽  
Extension Professionals

The purpose of this instructional document—officially called a white paper—is to help farmers, landowners, extension professionals and policymakers develop solutions to some of the problems they or their clients face, using agroforestry as a land management tool. This will be done by presenting readers with the various opportunities available in agroforestry, based on a review of current and potential practices in the southeastern United States. This document is Circular 1446, one of a series through the Center for Subtropical Agroforestry (CSTAF), School of Forest Resources and Conservation, Institute of Food and Agricultural Sciences, University of Florida. First Published: June 2004. https://edis.ifas.ufl.edu/fr146

scholarly journals The Sarracenia Pitcher Plants and Bog Gardening

2008 ◽  
pp. 79-99
Author(s):  
T Lawrence Mellichamp
Keyword(s):  
United States ◽  
North America ◽  
Extra Dimension ◽  
Southeastern United States ◽  
Short Note ◽  
Botanical Garden ◽  
Carnivorous Plants ◽  
Pitcher Plants ◽  
The Public ◽  
The World

The Sarracenia pitcher plants are among the world’s most beautiful and intriguing plants, and being carnivorous adds an extra dimension of fascination. They are endemic to North America – 10 species are found only in the southeastern United States and one species is widely distributed, from the northeastern US and across Canada. They are easy to cultivate if you understand their basic needs and are grown the world over. Every botanical garden should have them because they are so popular with the public. They go hand-in-hand with other unusual carnivorous plants to make a display that is captivating (puns intended!) to both children and adults. This paper covers types of pitcher plants, their habitats, brief descriptions of the species, a key to identification, cultivation and a short note on conservation.

scholarly journals Understanding Women’s Experience in Graduate Mathematics Through a Focused Identity Lens

2018 ◽  
Vol 3 (2) ◽  
pp. 112
Author(s):  
Lynn Liao Hodge ◽  
Lauren Wagener Riva
Keyword(s):  
United States ◽  
Graduate Students ◽  
Graduate School ◽  
Graduate Program ◽  
Southeastern United States ◽  
Social Situation ◽  
School Mathematics ◽  
Grade School ◽  
The Social ◽  
The World

Despite relatively equal proportions of boys and girls enrolled in STEM courses during grade school, women are significantly underrepresented in STEM degrees and occupations around the world (Hill, Corbett, and St. Rose, 2010). The field of mathematics reflects this trend. Our focus in this article is on three women graduate students in mathematics at a University in the Southeastern United States. In particular, we were interested in their identities that include their perspective on the graduate program. Specifically, we sought to understand the norms, expectations, and resources of the social situation in which their identities were developing. As will become apparent, the three students illustrate different identities as they participated in graduate school mathematics.

scholarly journals The Future of Tree Improvement in the Southeastern United States: Alternative Visions for the Next Decade

2005 ◽  
Vol 29 (2) ◽  
pp. 88-95 ◽  
Author(s):  
T.D. Byram ◽  
T.J. Mullin ◽  
T.L. White ◽  
J.P. van Buijtenen
Keyword(s):  
United States ◽  
Southeastern United States ◽  
Tree Improvement ◽  
Global Market ◽  
Production Costs ◽  
Cooperative Research ◽  
The World ◽  
The Future ◽  
Improvement Programs ◽  
Societal Expectations

Abstract The tree improvement programs founded in the southeastern United States 50 years ago have been the prototype for many silvicultural research programs around the world. During that time, they have been directly or indirectly responsible for much of the remarkable progress in forest productivity seen in the southeastern United States. They have also exported plant material, ideas, and trained professionals to many other parts of the world. These programs, models for collaborative research and development, are now entering a critical period fraught with both promise and peril. Extraordinary progress in both forest genetics and tree improvement is achievable during the next 10 years. Advances in physiology, genomics, and molecular biology provide tools to make rapid improvements in vegetative propagation, selection efficiencies, deployment strategies, and the possibility of creating crop trees with novel characteristics. This article discusses four main areas of concern that influence the future of tree improvement: economics, societal expectations, rate of scientific advancement, and organizational infrastructure. Key to the economic concerns are the restraints that arise from the fact that wood and fiber products are temporarily abundant in the global market. Under these conditions, tree improvement is restrained to adding value either by lowering production costs or by making qualitative changes capable of transforming the output into higher value specialty products. Key to the societal expectations is how tree improvement practitioners address the limits set by society on acceptable technology. We have a responsibility to shape public and corporate policies by helping evaluate the risks and benefits of alternative technologies. We have more control of the advancement of science and its silvicultural application. Nevertheless, advances in science occur at irregular intervals and are impossible to predict. The one area of our future that we collectively control is the infrastructure by which we organize our efforts. Criteria for successful infrastructure will be those that support continuity of effort, maximize return from limited resources, and foster cooperative research while simultaneously promoting the development of proprietary intellectual property. South. J. Appl. For. 29(2):88–95.

Interaction of Prodiamine and Flumioxazin for Nursery Weed Control

2010 ◽  
Vol 24 (4) ◽  
pp. 504-509 ◽  
Author(s):  
Glenn Wehtje ◽  
Charles H. Gilliam ◽  
Stephen C. Marble
Keyword(s):  
United States ◽  
Weed Control ◽  
Southeastern United States ◽  
Cost Effective ◽  
Fresh Weight ◽  
Weed Species ◽  
Rate Range ◽  
Nursery Production ◽  
Control Research ◽  
Large Crabgrass

Both prodiamine and flumioxazin are used in the nursery production and landscape maintenance industries in the southeastern United States for preemergence weed control. Research was conducted to determine whether a tank mixture of these two herbicides would be more effective than either component applied alone. Prodiamine alone, flumioxazin alone, and a 72 : 28 (by weight) prodiamine–flumioxazin mixture were each applied at a series of rates to containers filled with a pine bark–sand substrate that is typical for nursery production in the southeastern United States. Our intent was to have a rate range that hopefully extended from ineffective to lethal for each treatment series. Subsequent to treatment, containers were overseeded with either large crabgrass, spotted spurge, or eclipta. Percent control was determined by comparing treated weed foliage fresh weight to that of the appropriate nontreated control at 6 and 12 wk after application. ANOVA followed by nonlinear regression was used to evaluate the interaction of prodiamine and flumioxazin when combined and to determine the rate of each treatment series required for 95% control (if applicable) for each of the three weed species. Results varied with weed species. The mixture was synergistic and more cost effective than either of the components applied alone in controlling spotted spurge. With respect to large crabgrass control, the mixture was additive and slightly more cost effective than the components. Eclipta could only be controlled with flumioxazin, and this control was antagonized by the addition of prodiamine.

Communicating Organizational Trust: An Exploration of the Link Between Discourse and Action

2014 ◽  
Vol 54 (4) ◽  
pp. 347-368 ◽  
Author(s):  
Slavica Kodish
Keyword(s):  
United States ◽  
Metropolitan Area ◽  
Speech Act ◽  
Organizational Trust ◽  
Southeastern United States ◽  
Theory And Practice ◽  
Regional Center ◽  
Direction Of Fit ◽  
The World ◽  
Different Parts

Communication has frequently received attention in studies on trust. One question that has remained unanswered is, How is organizational trust communicated? Consistent with the view of organizations as discursive entities, research presented here examines discursive qualities of trust and attempts to provide an understanding of the manner in which organizational trust is communicated. Research presented in this article includes the results of two studies conducted in two different parts of the country: a large metropolitan area in the southeastern United States and a regional center in the south. Findings reveal that against the background of a continuous discursive and interactional flow, trust is communicated as a speech act characterized by the world-to-words direction of fit. Findings have implications for both theory and practice.

scholarly journals Two new species of <i>Mennerotodus</i> Zhelezko, 1994 (Chondrichthyes: Lamniformes: Odontaspididae), from the Paleogene of the southeastern United States

Fossil Record ◽  
2020 ◽  
Vol 23 (2) ◽  
pp. 117-140
Author(s):  
David J. Cicimurri ◽  
Jun A. Ebersole ◽  
George Martin
Keyword(s):  
United States ◽  
New Species ◽  
North American ◽  
Middle Eocene ◽  
Southeastern United States ◽  
Single Species ◽  
The World ◽  
Two New Species ◽  
Early Paleocene

Abstract. Mennerotodus Zhelezko, 1994, is an extinct lamniform shark known to occur in Paleogene strata of the Tethyan region of Asia and Europe. Although only a single species has been named, multiple subspecies have been erected and used as biostratigraphic tools in Asia. The genus has not been reported with confidence outside of the Tethyan region, but we have identified two new species of Mennerotodus from Paleogene deposits of the southeastern United States. Mennerotodus mackayi sp. nov. is described by teeth occurring in the lower Paleocene (Danian Stage) Pine Barren Member of the Clayton Formation of southern Alabama. A middle Eocene (Bartonian) species, Mennerotodus parmleyi sp. nov., is based on material occurring in the Clinchfield Formation in central Georgia. The early Paleocene record could indicate a North American origin for Mennerotodus relatively soon after the K–Pg event, with subsequent radiation to other parts of the world. The genus is likely more widely distributed than is currently known, but teeth can easily be overlooked due to their similarity to other taxa.

scholarly journals The Impact of Weeding Regime, Planting Density, and Growth Habits on Watermelon Yield in an Organic System

2019 ◽  
Vol 29 (5) ◽  
pp. 571-577
Author(s):  
Suzanne P. Stone ◽  
George E. Boyhan ◽  
W. Carroll Johnson
Keyword(s):  
United States ◽  
Weed Control ◽  
Growth Habit ◽  
Southeastern United States ◽  
Weed Suppression ◽  
Planting Density ◽  
Separate Experiment ◽  
Organic System ◽  
Growth Habits ◽  
The Impact

The southeastern United States produces 50% of U.S. conventional watermelon (Citrullus lanatus) but only 7% of U.S. organic watermelon. Weeds are a major threat to watermelon yield in the southeastern United States, and organic weed control is estimated to cost 20-times more than conventional herbicide programs. The objectives of this study were to determine the optimal weed control regime to reduce hand-weeding costs while maintaining yield and to compare the weed suppression of two watermelon types with differing growth habits in an organic system. In 2014 and 2015, watermelon plots were randomly assigned to the following treatments in a factorial arrangement: vine or compact growth habit; 1.0- or 0.5-m in-row spacing; and weekly weed control (kept weed-free by hoeing and hand-pulling weeds) for 0, 4, or 8 weeks after transplanting (WAT). At the time of the watermelon harvest, not weeding resulted in average total weed densities of 86.6 and 87.0 weeds/m2, and weeding for 4 WAT resulted in average total weed densities of 26.4 and 7.0 weeds/m2 in 2014 and 2015, respectively. Nonetheless, weeding for 4 WAT resulted in watermelon yields and fruit counts comparable to those of weeding for 8 WAT during both years. This partial-season weeding regime resulted in 67% and 63% weeding cost reductions for vine and compact plants, respectively, in 2014, and a 43% reduction for both growth habit types in 2015. In 2015, a separate experiment that evaluated weeding regimes that lasted 0, 1, 2, 3, 4, and 8 WAT found that yields resulting from weeding for 3 WAT were greater than those resulting from weeding for 2 WAT. However, the yields did not differ when weeding was performed for 4 WAT and 8 WAT.

scholarly journals The Punky Wood Ambrosia Beetle and Fungus in Florida that Cause Wood Rot: Ambrosiodmus minor and Flavodon subulatus

EDIS ◽  
2021 ◽  
Vol 2021 (2) ◽  
pp. 4
Author(s):  
Demian F. Gomez ◽  
Jiri Hulcr
Keyword(s):  
United States ◽  
Southeastern United States ◽  
Wood Decay ◽  
Forest Resources ◽  
Ecological Impacts ◽  
Ambrosia Beetle ◽  
Fact Sheet ◽  
Dead Trees ◽  
Introduced Range ◽  
Contemporary Management

Ambrosiodmus minor is an invasive ambrosia beetle in the southeastern United States, including Florida. It is considered of low importance because evident economic or ecological impacts have not been observed. However, it is associated with a unique ambrosia fungus, Flavodon subulatus, which causes rapid wood rot. Wood decay caused by this association between Ambrosiodmus and Flavodon is increasing in dead trees across the introduced range, especially in Florida. This 4-page fact sheet written by Demian F. Gomez and Jiri Hulcr and published by the UF/IFAS School of Forest Resources and Conservation offers guidance in identification of the pest, the symptoms of an infestation, and explanation of the insect?s biology. In addition, we provide an updated overview of contemporary management and monitoring of the species.https://edis.ifas.ufl.edu/fr434

Cultivation and Reduced-Rate Herbicides Weed Control in Sugarbeet Grown for Biofuel

2018 ◽  
Vol 32 (6) ◽  
pp. 726-732
Author(s):  
W. Carroll Johnson ◽  
Theodore M. Webster ◽  
Timothy L. Grey ◽  
Xuelin Luo
Keyword(s):  
United States ◽  
Weed Control ◽  
Southeastern United States ◽  
Integrated System ◽  
Cool Season ◽  
Evening Primrose ◽  
Limited Role ◽  
Reduced Rate ◽  
Main Effects ◽  
Sugarbeet Yields

AbstractSugarbeet, grown for biofuel, is being considered as an alternate cool-season crop in the southeastern United States. Previous research identified ethofumesate PRE and phenmedipham + desmedipham POST as herbicides that controlled troublesome cool-season weeds in the region, specifically cutleaf evening-primrose. Research trials were conducted from 2014 through 2016 to evaluate an integrated system of sweep cultivation and reduced rates of ethofumesate PRE and/or phenmedipham+desmedipham POST for weed control in sugarbeet grown for biofuel. There were no interactions between the main effects of cultivation and herbicides for control of cutleaf evening-primrose and other cool-season species in two out of three years. Cultivation improved control of cool-season weeds, but the effect was largely independent of control provided by herbicides. Of the herbicide combinations evaluated, the best overall cool-season weed control was from systems that included either a 1/2X or 1X rate of phenmedipham+desmedipham POST. Either rate of ethofumesate PRE was less effective than phenmedipham+desmedipham POST. Despite improved cool-season weed control, sugarbeet yield was not affected by cultivation each year of the study. Sugarbeet yields were greater when treated with any herbicide combination that included either a 1/2X or 1X rate of phenmedipham+desmedipham POST compared with either rate of ethofumesate PRE alone or the nontreated control. These results indicate that cultivation has a very limited role in sugarbeet grown for biofuel. The premise of effective weed control based on an integration of cultivation and reduced herbicide rates does not appear to be viable for sugarbeet grown for biofuel.

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