scholarly journals Creeping Bellflower Response to Glyphosate and Synthetic Auxin Herbicides

2018 ◽  
Vol 28 (1) ◽  
pp. 6-9
Author(s):  
Carl W. Coburn ◽  
Albert T. Adjesiwor ◽  
Andrew R. Kniss
Keyword(s):  
The Other ◽  
Residential Areas ◽  
Synthetic Auxin ◽  
Auxin Herbicides ◽  
Postemergence Herbicides ◽  
Biomass Reduction

Creeping bellflower (Campanula rapunculoides) is a difficult to manage weed commonly found in turfgrass and residential areas. We evaluated the efficacy of selected postemergence herbicides (glyphosate, dicamba, clopyralid, quinclorac, and triclopyr) on greenhouse-grown creeping bellflower. The experiment was conducted in Jan. 2016 and repeated in Sept. 2016. Each herbicide was applied at five rates plus a nontreated control. Clopyralid caused greater creeping bellflower biomass reduction and mortality than the other herbicides investigated. The herbicide dose required to cause 50% mortality was lowest for clopyralid [86–138 g·ha−1 acid equivalent (a.e.)] compared with dicamba (221–536 g·ha−1 a.e.), glyphosate (196–678 g·ha−1 a.e.), triclopyr (236–782 g·ha−1 a.e.), and quinclorac (>3000 g·ha−1 a.e.). Clopyralid could be an effective herbicide for managing creeping bellflower, although it is currently not registered for use in many habitats where this plant is a problematic weed.

The Influence of Hard Water on 2,4-D Formulations for the Control of Dandelion

2020 ◽  
pp. 1-31
Author(s):  
Geoffrey P. Schortgen ◽  
Aaron J. Patton
Keyword(s):  
Cropping Systems ◽  
Hard Water ◽  
Water Soluble ◽  
Soluble Salt ◽  
Synthetic Auxin ◽  
Auxin Herbicides ◽  
Acid Herbicides

The herbicide 2,4-D is used in a variety of cropping systems, especially in grasses since it is a selective postemergence broadleaf herbicide. However, the most common formulation (2,4-D dimethylamine) is antagonized when mixed in hard water. The objective of this research was to determine which formulations of 2,4-D or premixes of various formulations of synthetic auxin herbicides are subject to hard water antagonism. Formulations surveyed for hard water antagonism in the first experiment included 2,4-D dimethylamine, 2,4-D diethanolamine, 2,4-D monomethylamine, 2,4-D isopropylamine salt, 2,4-D choline salt, 2,4-D isooctyl ester, and 2,4-D ethylhexyl ester. Synthetic auxin formulation types in the second experiment included water-soluble, emulsifiable concentrates and emulsion-in-water. All formulations were mixed with both soft and hard water (600 mg CaCO3 L-1) and applied to dandelions to determine if antagonism occurred in hard water. Water-soluble (amine and choline) 2,4-D formulations were antagonized by hard water, but water-insoluble (ester) 2,4-D formulations were not antagonized. Similar results were found by formulation type with water-soluble synthetic auxin premixes antagonized but emulsifiable concentrates not antagonized. Further, water-soluble salt formulations were not antagonized when formulated in premixes with other synthetic auxin herbicides as an emulsion-in-water. This research demonstrates that all 2,4-D water-soluble formulations and water-soluble premixes with phenoxycarboxylic acid herbicides are subject to hard water antagonism. Formulations of 2,4-D containing emulsifying agents protect against antagonism by the water-insoluble nature of ingredients in their formulation.

Weed Control with Halauxifen-Methyl Applied Alone and in Mixtures with 2,4-D, Dicamba, and Glyphosate

2018 ◽  
Vol 32 (5) ◽  
pp. 597-602 ◽  
Author(s):  
Marcelo Zimmer ◽  
Bryan G. Young ◽  
William G. Johnson
Keyword(s):  
Weed Control ◽  
Field Experiments ◽  
Common Ragweed ◽  
Synthetic Auxin ◽  
Redroot Pigweed ◽  
Giant Ragweed ◽  
Auxin Herbicides ◽  
Control Spectrum

AbstractSynthetic auxin herbicides such as 2,4-D and dicamba are often utilized to control broadleaf weeds in preplant burndown applications to soybean. Halauxifen-methyl is a new synthetic auxin herbicide for broadleaf weed control in preplant burndown applications to corn, cotton, and soybean at low use rates (5 g ae ha–1). Field experiments were conducted to evaluate efficacy and weed control spectrum of halauxifen-methyl applied alone and in mixtures with 2,4-D (560 g ae ha–1), dicamba (280 g ae ha–1), and glyphosate (560 g ae ha–1). Glyphosate-resistant (GR) horseweed was controlled with halauxifen-methyl applied alone (90% control) and in mixtures (87% to 97% control) 35 d after treatment (DAT). Common ragweed was controlled 93% with halauxifen-methyl applied alone and 91% to 97% in mixtures 35 DAT. Halauxifen-methyl applied alone resulted in poor giant ragweed control 21 DAT (73% control); however, mixtures of halauxifen-methyl with 2,4-D, dicamba, or glyphosate controlled giant ragweed (86% to 98% control). Halauxifen-methyl alone resulted in poor redroot pigweed control (62% control) 21 DAT; however, mixtures of halauxifen-methyl with dicamba, 2,4-D, or glyphosate controlled redroot pigweed (89% to 98% control). Halauxifen-methyl controls GR horseweed and common ragweed applied alone and in mixtures with other synthetic auxin herbicides and glyphosate. Furthermore, mixing 2,4-D or dicamba with halauxifen-methyl can increase the weed control spectrum in preplant burndown applications.

scholarly journals Nilai Kearifan Rumah Hijau (Greenship Homes) Permukiman Pedesaan Lereng Gunung, kasus Desa Kledung, Temanggung

Arsitektura ◽  
2021 ◽  
Vol 19 (2) ◽  
pp. 217
Author(s):  
V.G. Sri Rejeki ◽  
Romantio Veronika Ndruru ◽  
Gita Cynthia Bella K. ◽  
Zia Amalia Wafi
Keyword(s):  
Green Buildings ◽  
The Other ◽  
Residential Areas ◽  
Cold Temperatures ◽  
Large Tree ◽  
The People ◽  
Mountain Settlements ◽  
Inorganic Waste ◽  
The Village ◽  
Local Materials

<p><em>The implementation of greenship homes rating tools on houses in residential areas has been carried out in recent times. On the other hand, in mountain settlements have the value of local wisdom considers the environment as the basis of settlement management. The purpose of this study found the value of green buildings mountain settlements, the case of Kledung Village, Wonosobo, using the analysis of greenship homes rating tools. Qualitative research is conducted by physical mapping methods and interviews to homeowner informants. The study used 12 purposive samples, which were defined based on four character locations. The results of the study, based on 4 character location of the case, greenship homes value is relatively similar / its same. There is no difference in value between one case than another, so that analysis is done at once. Overall, the results of the study explained that the greenship homes rating tool can be applied in kledung village. The result is 1) all buildings are larger than the ratio of greenship rating tools, 2) all houses have electricity meters and monitoring; 3) sorting of organic and inorganic waste; 4) pest management; 5) some houses use recicled, reuse, and local materials, 6) sunny utilization and solar entry into homes and cross-circulation wind management in houses. Uniquenesse's finding are 1) there is a minimum large tree in Kledung village, because the village has cold temperatures,  high humidity and little daily sunlight time. In addition, the people in Kledung Village do not regulate clean water, because it is abundant in this village</em><em></em></p>

scholarly journals POLITIK RELASI ETNIK: MATRILINEALITAS DAN ETNIK MINORITAS CINA DI PADANG, SUMATRA BARAT

2014 ◽  
Vol 6 (1) ◽  
pp. 136-150
Author(s):  
Laila Kholid Alfirdaus ◽  
Eric Hiariej ◽  
Farsijana Adeney Risakotta
Keyword(s):  
Political Economy ◽  
Qualitative Methods ◽  
Political Culture ◽  
The Other ◽  
Residential Areas ◽  
Mass Violence ◽  
Depth Interview ◽  
West Sumatra

Relasi etnik Minang dan etnik Cina di Padang, Sumatra Barat, menarik untuk dikaji. Melalui desk-study atas kajian Minang dan Cina, yang diperkuat dengan penelitian lapangan pada 2010 dan 2013 secara kualitatif dengan wawancara dan observasi, tulisan ini menemukan bahwa tidak cukup melihat relasi etnik Minang dan Cina dari perspektif ekonomi politik. Kita perlu memberikan perhatian terhadap faktor budaya dan budaya politik masyarakat Minang di Padang yang bercorak matrilineal. Jika literatur yang ada cenderung deterministik, menghasilkan dua pandangan yang secara ekstrem berbeda, yang dalam artikel ini disebut pandangan manis dan sinis, tulisan ini berargumen sebaliknya. Relasi etnik Minang dan etnik Cina tidak bisa secara buru-buru disebut manis hanya karena etnik Cina telah menetap dan berpartisipasi dalam kehidupan sosial ekonomi Padang sejak zaman penjajahan, atau karena Padang relatif minim kerusuhan dibandingkan kota lainnya. Demikian juga, ia tidak bisa serta merta dilihat secara sinis hanya karena segregasi sosial terlihat lebih kentara. Tulisan ini berargumen bahwa dua wajah yang secara bersamaan terjadi tidak lepas dari bentukan budaya Minang yang lekat dengan nilai-nilai matrilineal yang tertuang dalam ide feministik Bundo KanduangInter-etnic relations between Minang and Chinese in Padang, West Sumatra, that looks different compared to other societies in Indonesia is interesting to discuss. Through a desk study about Minang and Chinese, being strengthened with fieldworks in 2010 and 2013 using qualitative methods in which in-depth interview and non-participatory observations, this article found that political economy perspective being used to explain Minang-Chinese relations is not enough. We need to pay attention on culture and political culture of Minangkabau society in Padang, that is matrilineal in the nature. While the existing lieratures tend to strictly classify the relations into sweet and cynical (good and bad relations), this article argue the contrary. The relatively long encounter of Chinese with Minang in Padang as well as the less conflicts (mass violence) against Chinese compared to the other regions could not be simply categorized as manis (sweet relations). Similarly, we should not undermine the good relations between Minang and Chinese, existing in some ocassions merely as formalistic practices just because of segregation in Minang and Chineses residential areas. This article argues that the twocontrary but inseparable faces of Minang-Chineses relations are inseparable from the Minangkabau culture that is matrilineal in the nature, as manifested in Bundo Kanduang containing the idea of femininity.

scholarly journals SPECIES DIVERSITY, UTILIZATION AND CONSERVATION IN HOME GARDENS OF SOME RESIDENTIAL AREAS, COIMBATORE, INDIA.

2015 ◽  
Vol 2 (1) ◽  
pp. 71-80 ◽  
Author(s):  
Jamuna S ◽  
Subhasree R ◽  
Karthika K ◽  
Paulsamy S ◽  
Thenmozhi K
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Ocimum Basilicum ◽  
Home Gardens ◽  
The Other ◽  
Home Garden ◽  
Residential Areas ◽  
Important Species ◽  
Celosia Cristata ◽  
Number Of Plant Species

The present study was aimed at documenting species composition, utilization and conservation of plant species growing in home gardens of 10 residential areas of Coimbatore city, India. Household interviews and home garden surveys revealed that all the 109 plant species included in 60 families included have someeconomic uses or with ornamental significance. Higher number of species was herbs followed by shrubs, trees, climbers, succulent herbs, vines and sub-shrubs. The families viz., Asteraceae, Apocynaceae and Acanthaceae contributed higher number of plant species than the other families to the home gardens. Thespecies namely, Celosia cristata, Chrysanthemum odoratum and Ocimum basilicum have registered 50% frequency among the home gardens sampled which indicates that these species have distributed and maintained in comparatively higher number of home gardens. The home garden species are mainly under thecategories of vegetables, fruits, ornamentals, economic important species and medicinal. These results further report revealed that homegardens satisfy various household needs like food, ornamentals, medicines, building material, religious and ceremonial uses.

Herbicides for Postemergence Control of Mile-a-Minute (Mikania micrantha)

2014 ◽  
Vol 7 (2) ◽  
pp. 303-309 ◽  
Author(s):  
Brent A. Sellers ◽  
Sarah R. Lancaster ◽  
Kenneth A. Langeland
Keyword(s):  
Dose Response ◽  
South Florida ◽  
Growth Reduction ◽  
Mikania Micrantha ◽  
Synthetic Auxin ◽  
Greenhouse Experiments ◽  
Auxin Herbicides ◽  
Dose Response Study

AbstractGreenhouse experiments were conducted to evaluate mile-a-minute response to selected herbicides. In the first experiment, mile-a-minute response was evaluated following the application of aminocyclopyrachlor, aminopyralid, fluroxypyr, glufosinate, glyphosate, imazamox, imazapic, metsulfuron, penoxsulam, and triclopyr. Applications of aminocyclopyrachlor, aminopyralid, fluroxypyr, glufosinate, glyphosate, and triclopyr all resulted in mile-a-minute control 70% or greater 8 wk after treatment (WAT). Mile-a-minute sensitivity to these six herbicides was further evaluated in a dose-response study. Although 90% growth reduction (GR90) values were determined for aminopyralid and glyphosate, statistically significant results were not obtained for aminocyclopyrachlor, fluroxypyr, glufosinate, and triclopyr. The results of these experiments suggest that glyphosate, as well as the synthetic auxin herbicides aminocyclopyrachlor, aminopyralid, fluroxypyr, and triclopyr, should be further evaluated for mile-a-minute control in south Florida.

Response of Glyphosate-Resistant and Glyphosate-Susceptible Bentgrass (Agrostisspp.) to Postemergence Herbicides

2005 ◽  
Vol 19 (3) ◽  
pp. 549-559 ◽  
Author(s):  
Stephen E. Hart ◽  
Fred Yelverton ◽  
Eric K. Nelson ◽  
Darren W. Lycan ◽  
Gerald M. Henry
Keyword(s):  
North Carolina ◽  
Creeping Bentgrass ◽  
Herbicidal Activity ◽  
The Other ◽  
Complete Control ◽  
Marion County ◽  
Mature Stand ◽  
Herbicide Treatments ◽  
Herbicide Activity ◽  
Postemergence Herbicides

Studies were conducted in the summer and fall of 2001 in North Brunswick, NJ, and Marion County, Oregon, to evaluate the response of glyphosate-resistant and glyphosate-susceptible creeping bentgrass hybrids, colonial bentgrass, redtop, and dryland bentgrass grown as individual plants to postemergence (POST) herbicides. Glyphosate at 1.7 kg ae/ha, glufosinate at 1.7 kg ai/ha, fluazifop-P at 0.3 and 0.4 kg ai/ha, clethodim at 0.3 kg ai/ha, sethoxydim at 0.5 kg ai/ha, and a combination of glyphosate and fluazifop-P were applied 6 wk after planting. Glyphosate provided almost complete control of all susceptible bentgrass species at 4 weeks after treatment (WAT). Glufosinate provided 95% or greater control of all bentgrass species at 4 WAT, but regrowth was observed on all species in the summer experiment in Oregon. Fluazifop-P, clethodim, and sethoxydim provided slower control of bentgrass species, which ranged from 38 to 94% at 4 WAT, depending on species, herbicide, and experimental location. By 8 WAT, fluazifop-P at 0.4 kg/ha applied alone or in combination with glyphosate showed the highest levels of control (>90%) across all bentgrass species. Studies were also conducted in 2002 in the spring and summer in North Carolina to evaluate the response of a mature stand of glyphosate-susceptible ‘Penncross’ creeping bentgrass to POST herbicides. Two applications of glyphosate at 1.7 kg/ha were required to achieve 98% bentgrass control at 8 WAT. Fluazifop-P at 0.4 kg/ha, clethodim at 0.3 kg/ha, and sethoxydim at 0.4 kg/ha exhibited herbicidal activity, but two applications were required to reach (>82%) control of bentgrass at 8 WAT. Two sequential applications of clethodim or the combination of glyphosate and fluazifop-P provided 98% control of bentgrass at 8 WAT. Of the other herbicide treatments evaluated, only atrazine and sulfosulfuron provided (>80%) control at 8 WAT. The results of these studies demonstrate that fluazifop-P, clethodim, and sethoxydim have substantial herbicide activity on bentgrass species and may be viable alternatives to glyphosate for control of glyphosate-resistant creeping bentgrass and related bentgrass species in areas where they are not wanted. Glufosinate, atrazine, and sulfosulfuron also exhibited substantial herbicidal activity on bentgrass, and further research with these herbicides is warranted.

scholarly journals CLASSIFICATION OF LITHUANIAN TOWNS AND DEFINITION OF THEIR FUNCTIONAL STRUCTURE USED FOR URBAN PLANNING PURPOSES

2006 ◽  
Vol 30 (4) ◽  
pp. 181-191
Author(s):  
Zigmas Jonas Daunora
Keyword(s):  
Land Use ◽  
Urban Planning ◽  
Public Transportation ◽  
Urban System ◽  
The Other ◽  
Functional Structure ◽  
Residential Areas ◽  
Urban Structures ◽  
Ecological Requirements

Comprehensive planning of towns and townships takes a wider scale in the country. Therefore, there appears an urgent need to revise or review some conceptions of planning methodology that should be accepted after various alternatives consideration. According to our opinion: a) classification of centres of a settlement system (towns and townships) requires self-determination and equal understanding which, from one side, should reflect more precisely the existing diversity of development between the centres and their functions and, from the other side, the rank granted to these centres should meet the EU criteria; b) the functional structure of towns and townships, reflected by diversity in the purpose of their territory use and its indefinite character during the process of residential area modernization which takes place under market conditions, forces to give upa detailed setting of plot purpose and look for a more universal model of land- use purpose specification which could be applicable not only for planning of rural agricultural territories but for urban planning of residential areas as well. Proposals presented in the paper (Tables 1 and 2) respect the systematic conception of settlement network, accepted in Lithuania and in the other EU countries and based on the hierarchy of elements and development dependency allowing application of sustainability and balance principles for the system element development. They are prepared taking into account new urban planning conceptions and reflecting the following factors: changing business and production conditions as well as growing qualitative safety, service and ecological requirements for a residential environment; increasing importance of economic factors and resulting need for a more rational land use and broader urban internal integration when developing public transportation and urban system for a common space use; respect to stable urban structural elements of residential areas (urban framework) as well as to local cultural identity and historically formed compositional peculiarities; advantages of the functional and social diversity and polycentric character of urban structures.

scholarly journals Identification of Citrullus lanatus Germplasm Accessions Tolerant to Clomazone Herbicide

HortScience ◽  
2011 ◽  
Vol 46 (5) ◽  
pp. 684-687 ◽  
Author(s):  
Howard F. Harrison ◽  
Chandrasekar S. Kousik ◽  
Amnon Levi
Keyword(s):  
Field Experiments ◽  
Citrullus Lanatus ◽  
The Other ◽  
Germplasm Evaluation ◽  
Shoot Biomass ◽  
Severely Injured ◽  
Crop Tolerance ◽  
Biomass Reduction ◽  
Germplasm Accessions

Clomazone herbicide is registered for use in watermelon; however, crop tolerance is marginal, and the recommended use rates (0.17 to 0.28 kg a.i./ha) are lower for watermelon than for other crops. In a greenhouse germplasm evaluation experiment including 56 germplasm accessions and watermelon cultivars, three Citrullus lanatus var. citroides PI accessions (PI 482324, PI 5003540, and PI 532624) were not injured by clomazone, whereas most of the other accessions and cultivars were moderately or severely injured. A greenhouse concentration response experiment demonstrated that the clomazone concentration required to cause moderate injury to the tolerant ‘PI 500354’ was approximately three times the concentration required to cause similar injury to the susceptible citroides accession ‘PI 244017’, and the concentration required to cause 50% shoot biomass reduction was approximately five times greater for ‘PI 500354’ than for ‘Charleston Gray’ watermelon. Subsequent field experiments demonstrated that two tolerant accessions (‘PI 500354’ and ‘PI 482324’) were injured less initially by clomazone and recovered more rapidly from clomazone injury than two susceptible accessions (‘PI 244017’ and ‘PI 271773’) and two watermelon cultivars (‘Charleston Gray’ and ‘Crimson Sweet’). Tolerant germplasm accessions like ‘PI 482324’ and ‘PI 500354’ may be useful as sources of clomazone tolerance in watermelon breeding. Chemical name used: clomazone {2-[(2-chlorophenyl)methyl]-4,4-dimethyl-3-isoxazolidinone}.

Anatomical Response of St. Augustinegrass to Aminocyclopyrachlor Treatment

Weed Science ◽  
2011 ◽  
Vol 59 (2) ◽  
pp. 263-269 ◽  
Author(s):  
Michael L. Flessner ◽  
Roland R. Dute ◽  
J. Scott McElroy
Keyword(s):  
Apical Meristem ◽  
Vascular Tissue ◽  
Growth Stimulation ◽  
Adventitious Root Formation ◽  
Root Tip ◽  
Synthetic Auxin ◽  
Tissue Proliferation ◽  
Vascular Parenchyma ◽  
Affected Tissue ◽  
Auxin Herbicides

Aminocyclopyrachlor (AMCP) is a synthetic auxin herbicide that controls primarily broadleaf (eudicotyledonous) weeds. Previous research indicates that St. Augustinegrass is unacceptably injured by AMCP. In light of the fact that synthetic auxin herbicides usually are safe when applied to monocotyledons, the mechanism for this injury is not fully understood. Anatomical response of St. Augustinegrass to AMCP was investigated using light microscopy. Apical meristem node tissue responded with callus tissue proliferation, abnormal location and development of the apical meristem, necrosis of the developing vascular tissue, vascular parenchyma proliferation, and xylem gum blockages. Node tissues away from the apical meristem responded with xylem gum blockages and the stimulation of lateral meristems and adventitious root formation. Root tip response to AMCP treatment was characterized by a loss of organization. Root tip apical meristem and vascular tissue maturation was disorganized. Additionally, lateral root generation occurred abnormally close to the root tip. These responses impair affected tissue functionality. Mature tissue was unaffected by AMCP treatment. All of these responses are characteristic of synthetic auxin herbicide treatment to other susceptible species. This research indicates that AMCP treatment results in St. Augustinegrass injury and subsequent death through deleterious growth stimulation and concomitant vascular inhibition.

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