Response of woody eastern Canadian forest weeds to fall foliar treatments of glyphosate and triclopyr herbicides

1993 ◽  
Vol 23 (12) ◽  
pp. 2490-2498 ◽  
Author(s):  
D.G. Pitt ◽  
D.G. Thompson ◽  
N.J. Payne ◽  
E.G. Kettela

Second-season post-treatment efficacy data are presented for a New Brunswick field study comparing three formulations of glyphosate (VISION®, MON14420, and TOUCHDOWN®) and a single formulation of triclopyr (RELEASE®). Five rates of each herbicide were broadcast applied to a 2-year-old clearcut in early September. Two growing seasons after treatment, percent control values (based on total woody crown area) ranged from 21% at glyphosate rates < 0.25 × label maximum to more than 80% at rates ≥ 0.75 × label maximum. Coefficients of variation for percent control values decreased from 104% at the lower glyphosate rates to 9% at the higher rates. Total woody control provided by triclopyr was generally equivalent to that of glyphosate at rates < 0.5 × label maximum. Beyond this rate, percent control values for triclopyr averaged only 59% and coefficients of variation remained high (40%). At the individual-species level, the three glyphosate formulations provided greater crown volume reduction than triclopyr for white ash (Fraxinusamericana L.), beech (Fagusgrandifolia Ehrh.), hazel (Coryluscornuta Marsh.), and sugar maple (Acersaccharum Marsh.). Control of mountain maple (Acerspicatum Lam.) by TOUCHDOWN® was found to be slightly inferior to that of the other two glyphosate formulations. Control of elderberry (Sambucuspubens Michx.) by MON14420 was inferior to that of the other three herbicides. Nonlinear regression curves relating second-season control and herbicide dose are presented as a guide for silvicultural use.

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1860 ◽  
Author(s):  
Shiva Ram Bhandari ◽  
Juhee Rhee ◽  
Chang Sun Choi ◽  
Jung Su Jo ◽  
Yu Kyeong Shin ◽  
...  

Individual glucosinolates (GSLs) were assessed to select cabbage genotypes for a potential breeding program. One hundred forty-six cabbage genotypes from different origins were grown in an open field from March to June 2019; the cabbage heads were used for GSL analyses. Seven aliphatics [glucoiberin (GIB), progoitrin (PRO), epi-progoitrin (EPI), sinigrin (SIN), glucoraphanin (GRA), glucoerucin (GER) and gluconapin (GNA)], one aromatic [gluconasturtiin (GNS)] and four indolyl GSLs [glucobrassicin (GBS), 4-hydroxyglucobrassicin (4HGBS), 4-methoxyglucobrassicin (4MGBS), neoglucobrassicin (NGBS)] were found this study. Significant variation was observed in the individual GSL content and in each class of GSLs among the cabbage genotypes. Aliphatic GSLs were predominant (58.5%) among the total GSLs, followed by indolyl GSL (40.7%) and aromatic GSLs (0.8%), showing 46.4, 51.2 and 137.8% coefficients of variation, respectively. GIB, GBS and NGBS were the most common GSLs found in all genotypes. GBS was the most dominant GSL, with an average value of 3.91 µmol g−1 (0.79 to 13.14 µmol g−1). SIN, GIB, PRO and GRA were the other major GSLs, showing average values of 3.45, 1.50, 0.77 and 0.62 µmol g−1, respectively. The genotypes with relatively high contents of GBS, SIN, GIB and GRA warrant detailed studies for future breeding programs since the hydrolysis products of these GSLs have several anti-cancer properties.


1980 ◽  
Vol 33 (8) ◽  
pp. 1659 ◽  
Author(s):  
E Horn ◽  
MR Snow ◽  
PC Zeleny

Reactions of Mn(CO)5X(X = Cl, Br) with TIF or AgF in dichloromethane solution give the cluster species [Mn4(CO)12Fx(OH)4-x]. The TlF reactions give predominantly the species with x = 1 and 2 and the AgF reaction the species with x = 2 and 3. The individual species x = 0-4 can be identified in the mass spectrum. The x = 2 product from the AgF abstraction can be separated from the x = 3 one by crystallization over benzene to yield the pure solvate [Mn4(CO)12F2(OH)2],-2C6H6. The infrared OH stretch in this compound (3543 cm-1) shifts to higher frequency (3620 cm-1) on desolvation (100�C, 0.1 mmHg), confirming OH...π hydrogen bonding to benzene, and explains the purification mechanism. Crystals of the TlF product are cubic, space group Pn3m, with a 11.277(1) Ǻ. The absorption corrected data gave a conventional R value of 0.043 on full- matrix least-squares refinement. This product is predominantly the monofluoride species but the other differently substituted ones form isomorphous crystals. The molecules are cubane-type clusters of Mn(CO)3 groups at one set of corners interpenetrated with fluoro or hydroxy groups at the other set and exhibit crystallographic symmetry 43m. These interpenetrating tetrahedra have edge length of 3.199(1) and 2.529(3) Ǻ respectively consistent with values expected for limiting non-bonding contacts.


1984 ◽  
Vol 67 (6) ◽  
pp. 1044-1052 ◽  
Author(s):  
Leon Prosky ◽  
Nils-Georg Asp ◽  
Ivan Furda ◽  
Jonathan W Devries ◽  
Thomas F Schweizer ◽  
...  

Abstract An interlaboratory study was conducted to determine the total dietary fiber (TDF) content of food, food products, and total diets, using a combination of enzymatic and gravimetric procedures. Thirteen unknown products including 2 mixed diets (one lacto-ovo vegetarian and the other nonvegetarian) were analyzed by 32 analysts. Duplicate samples of dried foods were gelatinized with Termamyl, a heat-stable alphaam) lase, and then enzymatically digested with protease and amyloglucosidase to remove the protein and starch present in the sample. Four volumes of 95% ethanol were added to precipitate the soluble dietary fiber. The total residue was filtered, and then washed with 74% ethanol, 95% ethanol, and acetone. After drying, the residue was weighed. One of the duplicates was analyzed for protein, and the other was ashed at 525°C and the ash was measured. TDF was calculated as the weight of the residue less the weight of protein and ash. Coefficients of variation for 10 of the samples ranged from 2.95 to 26.39%. For 3 of the samples high coefficients of variation were obtained. The results compared satisfactorily with those obtained previously by the best method available for the individual foods studied.


The effect of differential transport on the gradient of concentration across a boundary is calculated for a substance existing in solution as a series of aggregates in mutual equilibrium. General equations are derived which are then used to construct schlieren patterns for a model system in order to illustrate the types of pattern to which aggregation can give rise. It is shown that in electrophoresis experiments the boundary in one limb is diffuse, and in the other hyper-sharp. In sedimentation the boundary is diffuse in general, but may have a hypersharp leading edge if there is a strong dependence o f the sedimentation velocity of the individual species on solute concentration. Although it is not possible for true resolution to occur at the boundary of a system in which equilibrium is maintained, the shapes of the schlieren patterns of the diffuse boundaries can be such as to give the impression that partial resolution is occurring. It means then that aggregates composed of more than two molecules are present and that at least one type of higher aggregate is strongly accentuated.


1977 ◽  
Vol 78 (1) ◽  
pp. 43-56 ◽  
Author(s):  
W. J. Sojka ◽  
C. Wray ◽  
Jean Shreeve ◽  
A. J. Benson

SUMMARYOf a total of 23,609 incidents of salmonella infection reported during the period 1968–74, 20,326 occurred in cattle, 1744 in poultry and other birds, 675 in sheep, 558 in pigs and 306 in other species of animals.Despite the large number of serotypes isolated (153), 88% of incidents were due to only two serotypes: S. dublin (15,929 incidents of which 15,446 occurred in cattle) and S. typhimurium (4842 incidents of which 3785 occurred in cattle and 732 in birds).S. choleraesuis was the third (314 incidents which with only 5 exceptions occurred in pigs) and S. abortusovis (243 incidents all in sheep) was the fourth most commonly isolated serotype. The following six serotypes were each recorded in more than 100 incidents: S. newport (177), S. agona (170), S. virchow (169), S. anatum (152), S. enteritidis (150) and S. montevideo (111). The other 143 serotypes accounted for only 5·8% of total incidents.The trends of annual incidence of salmonella infection in cattle, sheep, pigs, poultry and other birds during the 17-year period 1958–74 and the distribution of the main serotypes in the individual species of animals from 1968 to 1974 are discussed.


Ornis Svecica ◽  
2004 ◽  
Vol 14 (3) ◽  
pp. 63-106 ◽  
Author(s):  
Anders Enemar ◽  
Bengt Sjöstrand ◽  
Göran Andersson ◽  
Ted Von Proschwitz

The breeding passerine bird community of 9 km2 of a primeval subalpine birch forest in Swedish Lapland was censused yearly from 1963 through 1999. The community density remained stable, fluctuating around a mean value of 403 ± 85 territories/km2. Species richness increased by an average of one species every four years. Twenty species made up 98% of the community and Phylloscopus trochilus (40%) and Fringilla montifringilla (19%) remained the dominant species. The species turnover rate between successive seasons was on average 30%. The mean temperatures in June and July were positively correlated to the community density two years and one year later, respectively, less so for the densities of the individual species. Fringilla montifringilla increased in density during the first two years of each Epirrita autumnata caterpillar outbreak, whereas the other species responded only weakly or not at all. All species tended to fluctuate in parallel (no significant opposite trends) which together with the other results suggests that the investigated bird community is far from saturated.


1973 ◽  
Vol 51 (21) ◽  
pp. 3563-3571 ◽  
Author(s):  
Theo P. A. Kruck ◽  
Bibudhendra Sarkar

The presence of simultaneously existing multiple species were taken into account in interpreting the structures of the complex species in the Cu(II)–L-histidine system. A refined proton displacement technique was utilized for structure elucidation of the species in solution. The absorbance and the molar extinction of the individual species were computed from the total absorbance and the species distribution over the pH range studied. The i.r. spectra of L-histidine and Cu(II)–L-histidine in D2O were obtained as a function of pD. They were interpreted in view of the species detected in a given pH range. The results of the species distribution as a function of pH, proton displacement, visible spectra of the individual species, and infrared data, were all combined to make structural interpretations. The following modes of metal coordination were proposed for the major species in the Cu(II)–L-histidine system: MHA, O(carboxyl) and N(imidazole); MH2A2, O(carboxyl) and N(amino) in both L-histidines; MA, O(carboxyl), N(imidazole), and N(amino); MHA2O(carboxyl), N(imidazole), and N(amino) in one L-histidine and O(carboxyl) and N(amino) in the other; MA2, O(carboxyl). N(imidazole), and N(amino) in both L-histidines, or O(carboxyl), N(imidazole), and N(amino) in one L-histidine and N(amino) and N(imidazole) in the other or an equilibrium mixture of both structures.


1976 ◽  
Vol 41 (4) ◽  
pp. 523-529 ◽  
Author(s):  
Daniel R. Boone ◽  
Harold M. Friedman

Reading and writing performance was observed in 30 adult aphasic patients to determine whether there was a significant difference when stimuli and manual responses were varied in the written form: cursive versus manuscript. Patients were asked to read aloud 10 words written cursively and 10 words written in manuscript form. They were then asked to write on dictation 10 word responses using cursive writing and 10 words using manuscript writing. Number of words correctly read, number of words correctly written, and number of letters correctly written in the proper sequence were tallied for both cursive and manuscript writing tasks for each patient. Results indicated no significant difference in correct response between cursive and manuscript writing style for these aphasic patients as a group; however, it was noted that individual patients varied widely in their success using one writing form over the other. It appeared that since neither writing form showed better facilitation of performance, the writing style used should be determined according to the individual patient’s own preference and best performance.


2008 ◽  
Vol 1 (2) ◽  
pp. 187-199
Author(s):  
KATHRYN WALLS

According to the ‘Individual Psychology’ of Alfred Adler (1870–1937), Freud's contemporary and rival, everyone seeks superiority. But only those who can adapt their aspirations to meet the needs of others find fulfilment. Children who are rejected or pampered are so desperate for superiority that they fail to develop social feeling, and endanger themselves and society. This article argues that Mahy's realistic novels invite Adlerian interpretation. It examines the character of Hero, the elective mute who is the narrator-protagonist of The Other Side of Silence (1995) , in terms of her experience of rejection. The novel as a whole, it is suggested, stresses the destructiveness of the neurotically driven quest for superiority. Turning to Mahy's supernatural romances, the article considers novels that might seem to resist the Adlerian template. Focusing, in particular, on the young female protagonists of The Haunting (1982) and The Changeover (1984), it points to the ways in which their magical power is utilised for the sake of others. It concludes with the suggestion that the triumph of Mahy's protagonists lies not so much in their generally celebrated ‘empowerment’, as in their transcendence of the goal of superiority for its own sake.


2011 ◽  
Vol 2011 (1) ◽  
pp. 5-28
Author(s):  
Jens Bonnemann

In ethics, when discussing problems of justice and a just social existence one question arises obviously: What is the normal case of the relation between I and you we start from? In moral philosophy, each position includes basic socio-anthropological convictions in that we understand the other, for example, primarily as competitor in the fight for essential resources or as a partner in communication. Thus, it is not the human being as isolated individual, or as specimen of the human species or socialised member of a historical society what needs to be understood. Instead, the individual in its relation to the other or others has been studied in phenomenology and the philosophy of dialogue of the twentieth century. In the following essay I focus on Martin Buber’s and Jean-Paul Sartre’s theories of intersubjectivity which I use in order to explore the meaning of recognition and disrespect for an individual. They offer a valuable contribution to questions of practical philosophy and the socio-philosophical diagnosis of our time.


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