Metribuzin residues in lentil following postemergence application

1998 ◽  
Vol 78 (1) ◽  
pp. 167-169 ◽  
Author(s):  
Allan J. Cessna

In a study involving two sites in western Canada, residues of the herbicide metribuzin in lentil were monitored by gas chromatography following postemergence application at 0.28 kg a.i. ha−1. On the day of spraying, initial residues in lentil green foliage were of the order of 1 mg kg−1. Metribuzin residues in the green foliage continually decreased with time to non-detectable levels (< 0.02 mg kg−1) at 42 d after application. No metribuzin residues were detected in the straw or mature seed. Key words: Metribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio-1,2,4-triazin-5(4H)-one; lentil, Lens culinaris Medic., residues, residue analysis, gas chromatography

2002 ◽  
Vol 82 (1) ◽  
pp. 257-259
Author(s):  
Allan J. Cessna

In a study involving three sites in western Canada, residues of the herbicides metribuzin and trifluralin in faba bean (Vicia faba L.) were monitored by gas chromatography with electron-capture detection following pre-plant incorporation of tank mixtures of metribuzin plus trifluralin at (0.28 + 1.12) and (0.42 + 1.12) kg ha–1. In green foliage samples collected 40 to 48 and 90 d after seeding, mean residues (n = 4) of either herbicide did not exceed 0.10 mg kg–1. No metribuzin or trifluralin residues were detected in the mature seed. Key words: Metribuzin, trifluralin, faba bean, Vicia faba L., herbicide residues, gas chromatography


2005 ◽  
Vol 85 (1) ◽  
pp. 163-164 ◽  
Author(s):  
A. Vandenberg ◽  
C. Vera ◽  
L. Buchwaldt ◽  
S. Dueck ◽  
R. A.A. Morrall ◽  
...  

CDC Sedley is a high-yielding, early-maturing, yellow cotyledon lentil (Lens culinaris Medik.) cultivar developed by the Crop Development Centre (CDC), University of Saskatchewan, Saskatoon, Saskatchewan. It is suitable for the large green market class of lentil and is intended for cultivation in all lentil-growing areas of western Canada. CDC Sedley was issued registration #5319 on 2001 May 01 by the Variety Section, Plant Health and Plant Products Division , Canadian Food Inspection Agency. Key words: Lentil, cultivar description, Lens culinaris


2002 ◽  
Vol 82 (1) ◽  
pp. 107-108 ◽  
Author(s):  
A. Vandenberg ◽  
F. A. Kiehn ◽  
C. Vera ◽  
R. Gaudiel ◽  
L. Buchwaldt ◽  
...  

CDC Sovereign is a high-yielding, yellow cotyledon lentil (Lens culinaris Medik.) cultivar developed by the Crop Development Centre, University of Saskatchewan, Saskatoon, Saskatchewan. It is intended for cultivation in all lentil-growing areas of western Canada. It has large, plump seeds with green seed coat, suitable for the large green market class of lentil. CDC Sovereign was issued registration #5019 on 26 November 1999 by the Variety Section, Plant Health and Plant Products Division, Canadian Food Inspection Agency. Key words: Lentil, cultivar description, Lens culinaris


1996 ◽  
Vol 76 (3) ◽  
pp. 525-529 ◽  
Author(s):  
D. A. Wall

Dose response studies were conducted under field conditions from 1993 to 1995 to investigate the tolerance of lentil and fababean to post-emergence applications of imazethapyr (2-[4,5-dihydro-4-methyl-4(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acid). Imazethapyr was foliar applied at dosages of 5 to 100 g a.i. ha−1. Lentils were injured by imazethapyr in all 3 yr. The minimum imazethapyr dosages that reduced lentil yields were 20, 10, and 50 g a i ha−1 in 1993 1994 and 1995, respectively; at these dosages yield losses were 31, 21 and 29% in the 3 yr, respectively. This study shows that imazethapyr should not be applied to lentil crops since yields are severely reduced at or below current dosages recommended (50 g a.i. ha−1) for use in western Canada. Fababean tolerance to imazethapyr was examined in 2 yr only. In both years, crop tolerance was excellent and fababean yield was unaffected by imazethapyr at dosages up to 100 g a.i. ha−1. Key words: Crop injury, leaf area index, yield


2005 ◽  
Vol 85 (1) ◽  
pp. 159-160
Author(s):  
A. Vandenberg ◽  
C. Vera ◽  
L. Buchwaldt ◽  
S. Dueck ◽  
R. A.A. Morrall ◽  
...  

CDC LeMay is a high-yielding, yellow cotyledon lentil (Lens culinaris Medik.) cultivar developed by the Crop Development Centre, University of Saskatchewan, Saskatoon, Saskatchewan. It is suitable for the French Green market class of lentil and is intended for cultivation in all lentil-growing areas of western Canada. CDC LeMay was issued registration #5552 on October 28, 2002 by the Variety Section, Plant Health and Plant Products Division, Canadian Food Inspection Agency. Key words: Lentil, cultivar description, Lens culinaris


2005 ◽  
Vol 85 (1) ◽  
pp. 161-162 ◽  
Author(s):  
A. Vandenberg ◽  
C. Vera ◽  
L. Buchwaldt ◽  
S. Dueck ◽  
R. A.A. Morrall ◽  
...  

CDC Plato is a high-yielding, yellow cotyledon lentil (Lens culinaris Medik.) cultivar developed by the Crop Development Centre, University of Saskatchewan, Saskatoon, Saskatchewan. It is suitable for the large green market class of lentil and is intended for cultivation in all lentil-growing areas of western Canada. CDC Plato was issued registration #5554 on November 1, 2002 by the Variety Section, Plant Health and Plant Products Division, Canadian Food Inspection Agency. Key words: Lentil, cultivar description, Lens culinaris


2002 ◽  
Vol 82 (1) ◽  
pp. 105-106 ◽  
Author(s):  
A. Vandenberg ◽  
F. A. Kiehn ◽  
C. Vera ◽  
R. Gaudiel ◽  
L. Buchwaldt ◽  
...  

CDC Grandora is a high-yielding, yellow cotyledon lentil (Lens culinaris Medik.) cultivar developed by the Crop Development Centre, University of Saskatchewan, Saskatoon, Saskatchewan. It has large seeds with green seed coat and is suitable for the large green market class of lentil. CDC Grandora is intended for cultivation in all lentil-growing areas of western Canada. CDC Grandora was issued registration #4993 on October 4, 1999 by the Variety Section, Plant Health and Plant Products Division, Canadian Food Inspection Agency. Key words: Lentil, cultivar description, Lens culinaris


Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1100
Author(s):  
Wioletta Parys ◽  
Małgorzata Dołowy ◽  
Alina Pyka-Pająk

The present study summarizes the new strategies including advanced equipment and validation parameters of liquid and gas chromatography methods i.e., thin-layer chromatography (TLC), column liquid chromatography (CLC), and gas chromatography (GC) suitable for the identification and quantitative determination of different natural and synthetic bioactive compounds present in food and food products, which play an important role in human health, within the period of 2019–2021 (January). Full characteristic of some of these procedures with their validation parameters is discussed in this work. The present review confirms the vital role of HPLC methodology in combination with different detection modes i.e., HPLC-UV, HPLC-DAD, HPLC-MS, and HPLC-MS/MS for the determination of natural and synthetic bioactive molecules for different purposes i.e., to characterize the chemical composition of food as well as in the multi-residue analysis of pesticides, NSAIDs, antibiotics, steroids, and others in food and food products.


2006 ◽  
Vol 61 (5-6) ◽  
pp. 341-346 ◽  
Author(s):  
Jae-Woo Park ◽  
A. M. Abd El-Aty ◽  
Myoung-Heon Lee ◽  
Sung-Ok Song ◽  
Jae-Han Shim

A multiresidue method for the simultaneous determination of 22 organochlorine (OCs) and organophosphorus (Ops) pesticides (including isomers and metabolites), representing a wide range of physicochemical properties, was developed in fatty matrices extracted from meat. Pesticides were extracted from samples with acetonitrile/n-hexane (v :v, 1:1). The analytical screening was performed by gas chromatography coupled with electron-capture detection (ECD). The identification of compounds was based on their retention time and on comparison of the primary and secondary ions. The optimized method was validated by determining accuracy (recovery percentages), precision (repeatability and reproducibility), and sensitivity (detection and quantitation limits) from analyses of samples fortified at 38 to 300 ng/g levels. Correlation coefficients for the 22 extracted pesticide standard curves (linear regression analysis, n = 3) ranged from 0.998 to 1.000. Recovery studies from 2 g samples fortified at 3 levels demonstrated that the GC-ECD method provides 64.4-96.0% recovery for all pesticides except 2,4′-DDE (44.6-50.4%), 4,4′-DDE (51.1-57.5%) and 2,4′-DDT (50.0-51.2%). Both repeatability and reproducibility relative standard deviation values were < 20% for all residues. Detection limits ranged from 0.31 to 1.27 ng/g and quantification limits were between 1.04 and 4.25 ng/g. The proposed analytical method may be used as a simple procedure in routine determinations of OCs and Ops in meat. It can also be applied to the determination of pesticide multi-residues in other animal products such as butter and milk.


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