Efficacy of imazethapyr application timing on the control of long-spined sandbur [Cenchrus longispinus (Hack. in Kneuck.] Fernald) in soybean

2009 ◽  
Vol 89 (1) ◽  
pp. 207-210
Author(s):  
N. Soltani ◽  
J. D. Vyn ◽  
C. Kramer ◽  
P. H. Sikkema
Keyword(s):  
Glycine Max ◽  
Key Words ◽  
Weed Control ◽  
Crop Yield ◽  
Application Timing ◽  
Leaf Stage ◽  
Glycine Max L

An experiment was conducted in 2005 and 2006 in southwestern Ontario to examine the efficacy of imazethapyr application timing on the control of long-spined sandbur in soybean (Glycine max L. Merr.). Imazethapyr (100 g a.i. ha-1) was applied early and delayed preemergence (PRE), and postemergence (POST) at the spike to five-leaf stage of the weed. Soybean was not injured by any treatment. Imazethapyr applied PRE did not control long-spined sandbur; POST treatments resulted in up to 72, 66, 78, 91, 78, and 71% weed control when applied at the spike, one-, two-, three-, four-, and five-leaf stage, respectively, and crop yield increased 44, 28, 39, 24, 38, and 20%, respectively. Therefore, imazethapyr should be applied at the three-leaf stage of the weed to optimize control and crop yield. Key words: Weed control, soybean, preemergence herbicide, postemergence herbicide

Control of common cocklebur (Xanthium strumarium L.) with pre- and postemergence herbicides in soybean

2008 ◽  
Vol 88 (6) ◽  
pp. 1127-1131
Author(s):  
P. H. Sikkema ◽  
C. Kramer ◽  
J. D. Vyn ◽  
N. Soltani
Keyword(s):  
Glycine Max ◽  
Key Words ◽  
Weed Control ◽  
Dry Weight ◽  
Field Trials ◽  
Xanthium Strumarium ◽  
Glycine Max L ◽  
Excellent Control ◽  
Reduced Density ◽  
Postemergence Herbicides

Field trials were conducted in 2006 and 2007 on three Ontario farms with heavy infestations of cocklebur to determine the effectiveness of various preemergence (PRE) and postemergence (POST) herbicides for control of cocklebur in soybean [Glycine max (L.) Merr.]. There was minimal injury (2% or less) to soybean from the PRE and POST herbicides evaluated. Cloransulam applied PRE provided up to 98% visual control, reduced density 93%, and reduced dry weight of cocklebur 96%. Linuron, metribuzin, imazethapyr, and clomazone applied PRE provided 0 to 77% control and reduced density and dry weight of cocklebur minimally (54% or less) compared with the weedy check. Cloransulam applied POST provided as much as 98% control, reduced density up to 96%, and reduced dry weight of cocklebur as much as 98%. Chlorimuron, imazethapyr, imazethapyr plus bentazon, and glyphosate applied POST provided 49 to 90% control, reduced density 62 to 89%, and reduced dry weight of cocklebur 69 to 92%. Acifluorfen, fomesafen, bentazon, and thifensulfuron applied POST provided 1 to 51% control, reduced density 0 to 80%, and reduced dry weight 0 to 74% compared with the weedy check. Soybean yield increased as much as 79% compared with the weedy check as a result of cloransulam applied PRE or POST. Based on these results, cloransulam applied PRE or POST provides excellent control of cocklebur in soybean. Key words: Cocklebur, weed control, soybean, preemergence herbicide, postemergence herbicide

DH3604 soybean

2006 ◽  
Vol 86 (2) ◽  
pp. 483-484 ◽  
Author(s):  
Elroy R. Cober ◽  
Harvey D. Voldeng ◽  
Judith A. Frégeau-Reid ◽  
Ronald J. D. Guillemette
Keyword(s):  
Glycine Max ◽  
Key Words ◽  
Soybean Cultivar ◽  
Heat Unit ◽  
Glycine Max L ◽  
Cultivar Description

DH3604 is a 2700 crop heat unit soybean [Glycine max (L.) Merr.] cultivar developed for natto soyfood production. Key words: Soybean, cultivar description, natto

AC Albatros soybean

1996 ◽  
Vol 76 (1) ◽  
pp. 151-152
Author(s):  
H. D. Voldeng ◽  
R. J. D. Guillemette ◽  
D. A. Leonard ◽  
E. R. Cober
Keyword(s):  
Glycine Max ◽  
Key Words ◽  
Good Yield ◽  
Soybean Cultivar ◽  
Yield Potential ◽  
Heat Unit ◽  
Glycine Max L ◽  
Cultivar Description

AC Albatros is a 2500 crop heat unit soybean [Glycine max (L.) Merr.] cultivar with good yield potential. Key words: Soybean, cultivar description

NattoKing K87 soybean

1991 ◽  
Vol 71 (3) ◽  
pp. 863-864
Author(s):  
N. R. Bradner ◽  
R. D. Simpson ◽  
A. A. Hadlock
Keyword(s):  
Glycine Max ◽  
Key Words ◽  
Maturity Group ◽  
Group I ◽  
Glycine Max L ◽  
Cultivar Description

NattoKing K87, a Maturity Group I soybean (Glycine max (L.) Merr.) cultivar, yields more, has smaller seeds, lodges less and matures later than Canatto. Key words: Glycine max, NattoKing K87 cultivar, cultivar description, soybean

scholarly journals Nattoking K86 soybean

1991 ◽  
Vol 71 (3) ◽  
pp. 855-856 ◽  
Author(s):  
N. R. Bradner ◽  
R. D. Simpson ◽  
A. A. Hadlock
Keyword(s):  
Glycine Max ◽  
Key Words ◽  
Seed Size ◽  
Maturity Group ◽  
Yield Performance ◽  
Glycine Max L ◽  
Cultivar Description

NattoKing K86 is a Maturity Group 00 soybean (Glycine max (L.) Merr.) cultivar having higher yield performance, smaller seed size, and later maturity than Canatto. Key words: Glycine max, NattoKing K86 cultivar, cultivar description, soybean

NattoKing K88 soybean

1991 ◽  
Vol 71 (4) ◽  
pp. 1163-1164
Author(s):  
N. R. Bradner ◽  
R. D. Simpson ◽  
A. A. Hadlock
Keyword(s):  
Glycine Max ◽  
Key Words ◽  
Maturity Group ◽  
Group I ◽  
Glycine Max L

NattoKing K88, a Maturity Group I soybean (Glycine max (L.) Merr.) cultivar, yields more, has smaller seeds, lodges less and matures later than Canatto. Key words: Glycine max, NattoKing K88 cultivar

Sweetpotato Tolerance to Halosulfuron Applied Postemergence

2007 ◽  
Vol 21 (4) ◽  
pp. 993-996 ◽  
Author(s):  
Andrew W. MacRae ◽  
David W. Monks ◽  
Roger B. Batts ◽  
Allan C. Thorton ◽  
Jonathan R. Schultheis
Keyword(s):  
Weed Control ◽  
Crop Yield ◽  
Total Yield ◽  
Application Timing ◽  
Yield And Quality ◽  
Total Crop

Studies were conducted in 2003 and 2004 to determine the effect of application timing and halosulfuron rate on sweetpotato yield and quality. Halosulfuron was applied 1, 2, and 4 wks after transplanting (WAP) sweetpotato in 2003, and 2, 3, and 4 WAP in 2004. Treatments within each timing included halosulfuron at 13, 26, 39, 52, and 65 g ai/ha plus a weed-free control. Combined over year, site, cultivar and rate, halosulfuron applied at 1, 2, 3, and 4 WAP stunted sweetpotato 32, 15, 11, and 14%, respectively, rated 2 wks after treatment. The stunting observed with the 1 and 2 WAP timings caused a 17 and 10% reduction in yield of No. 1 roots, respectively, compared with the weed-free control. The 3 and 4 WAP timings of halosulfuron did not reduce yield of No. 1 roots. Total yield was reduced approximately 11% at the 1, 2, and 3 WAP application timings. Halosulfuron at 4 WAP did not reduce total yield. Combined over year, site, and cultivar, halosulfuron applied at 39 g/ha did not reduce the weight of No. 1 roots or total crop yield and thus could be an effective POST option for weed control in sweetpotato.

AC 2001 soybean

1999 ◽  
Vol 79 (1) ◽  
pp. 113-114
Author(s):  
H. D. Voldeng ◽  
R. J. D. Guillemette ◽  
E. R. Cober
Keyword(s):  
Glycine Max ◽  
Key Words ◽  
Good Yield ◽  
Soybean Cultivar ◽  
Yield Potential ◽  
Heat Unit ◽  
Glycine Max L ◽  
Cultivar Description

AC 2001 is a 700 crop heat unit soybean [Glycine max (L.) Merr.] cultivar with good yield potential. Key words: Soybean, cultivar description

OAC Musca soybean

1991 ◽  
Vol 71 (2) ◽  
pp. 497-498 ◽  
Author(s):  
W. D. Beversdorf ◽  
D. J. Hume ◽  
P. Gostovic ◽  
J. C. Muscat ◽  
S. Pararajasingham
Keyword(s):  
Glycine Max ◽  
Key Words ◽  
Soybean Cultivar ◽  
Clay Soils ◽  
Phytophthora Megasperma ◽  
Low Field ◽  
Glycine Max L ◽  
Cultivar Description

OAC Musca is a soybean (Glycine max (L.) Merr.) cultivar which is 3 d earlier than Hodgson and 2% higher in yield in Ontario trials. It has exhibited low field losses to Phytophthora megasperma f. sp. glycinea in Ontario testing, is a tall cultivar and is intended for use on clay soils. Key words: Soybean, cultivar description

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