scholarly journals Response of Dry Bean to Sulfentrazone Plus Imazethapyr

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Nader Soltani ◽  
Christy Shropshire ◽  
Peter H. Sikkema
Keyword(s):  
Dry Weight ◽  
Field Studies ◽  
Research Station ◽  
Seed Moisture Content ◽  
Visible Injury ◽  
Dry Bean ◽  
Black And White ◽  
Shoot Dry Weight ◽  
Seed Moisture ◽  
White Bean

Field studies were conducted in 2010 and 2011 at the Huron Research Station, Exeter, Ontario and from 2009 to 2011 at the University of Guelph Ridgetown Campus, Ridgetown, Ontario to evaluate the sensitivity of four market classes of dry bean to sulfentrazone applied preemergence at 105, 140, and 280 g ai/ha alone and in combination with imazethapyr at 37.5 g ai/ha. At 1 week after emergence (WAE), sulfentrazone alone or in combination with imazethapyr at all doses evaluated caused no significant visible injury in dry bean. At 2 WAE, sulfentrazone alone caused 1–11, 1–11, 1–5, and 3–19% visible injury, and sulfentrazone + imazethapyr caused 3–11, 2–10, 2–5, and 4–20% visible injury in black, cranberry, kidney, and white bean, respectively. At 4 WAE, sulfentrazone alone caused 1–7, 1–7, 0–4, and 1–16% visible injury and sulfentrazone + imazethapyr caused 1–8, 1–5, 1–3, and 2–14% visible injury in black, cranberry, kidney, and white bean, respectively. Sulfentrazone PRE caused slightly greater injury in black and white bean compared to cranberry and kidney bean. Generally, crop injury with sulfentrazone at rates up to 140 g ai/ha alone and in combination with imazethapyr at 37.5 g ai/ha was minimal with no adverse effect on plant height, shoot dry weight, seed moisture content, and yield. Based on these results, there is potential for preemergence application of sulfentrazone at rates up to 140 g ai/ha alone or in combination with imazethapyr at 37.5 g ai/ha in black, cranberry, kidney and white bean.

Dry Bean Response to Preemergence-Applied KIH-485

2007 ◽  
Vol 21 (1) ◽  
pp. 230-234 ◽  
Author(s):  
Peter H. Sikkema ◽  
Christy Shropshire ◽  
Nader Soltani
Keyword(s):  
Dry Weight ◽  
Field Trials ◽  
Dry Beans ◽  
Seed Moisture Content ◽  
Dry Bean ◽  
Shoot Dry Weight ◽  
Seed Moisture ◽  
Reduced Height ◽  
White Bean ◽  
Pinto Beans

Three field trials were conducted over a 2-yr period (2004 and 2005) at Exeter and Ridgetown, Ontario to evaluate the tolerance of eight market classes of dry beans to KIH-485 applied PRE at 210 and 420 g ai/ha. KIH-485 PRE caused as much as 67% visual injury in small-seeded and 44% visual injury in large-seeded dry beans. KIH-485 applied PRE at 420 g/ha reduced plant height up to 47% at Ridgetown and 8% at Exeter in 2004, and reduced height of brown and white bean by 15 and 19%, respectively, but had no effect on the height of the other beans in 2005. Shoot dry weight was not affected at Exeter in 2004 but was reduced by 46% at Ridgetown in 2004 and 14% at Exeter in 2005. In 2004, seed moisture content increased by 5, 6, and 12% in black, otebo, and pinto beans, respectively. Seed yield was reduced up to 27% at Ridgetown and 11% at Exeter in 2004 but was not affected at Exeter in 2005. On the basis of this research, KIH-485 PRE causes unacceptable injury in some dry bean market classes.

Response of Four Market Classes of Dry Bean (Phaseolus vulgaris) to Foramsulfuron, Isoxaflutole, and Isoxaflutole plus Atrazine Applied in Previous Years

2006 ◽  
Vol 20 (3) ◽  
pp. 558-563 ◽  
Author(s):  
Darren E. Robinson ◽  
Nader Soltani ◽  
Peter H. Sikkema
Keyword(s):  
Phaseolus Vulgaris ◽  
Dry Weight ◽  
Field Trials ◽  
Navy Bean ◽  
Visible Injury ◽  
Dry Bean ◽  
Shoot Dry Weight ◽  
Field Corn ◽  
White Bean

Three field trials were established from 2001 to 2003 in Ontario to determine the effect of foramsulfuron POST (35 and 70 g ai/ha), isoxaflutole PRE (105 and 210 g ai/ha), and isoxaflutole plus atrazine PRE (105 + 1063 and 210 + 2126 g ai/ha) applied in the previous years to field corn on cranberry, black, kidney, and white (navy) bean. Foramsulfuron residues did not cause visible injury, or reductions in shoot dry weight or yield of dry bean 1 yr after application in corn. In contrast, visual injury across the four market classes varied from 4 to 37% 1 yr after application of isoxaflutole, and from 30 to 54% 1 yr after application of isoxaflutole plus atrazine. Isoxaflutole residues reduced shoot dry weight and yield as much as 81 and 44% in cranberry, 52 and 39% in black, 53 and 19% in kidney, and 42 and 19% in white bean, respectively. Isoxaflutole plus atrazine residues reduced shoot dry weight and yield as much as 87 and 64% in cranberry, 75 and 61% in black, 71 and 46% in kidney, and 65 and 33% in white navy bean, respectively. Injury was not detected regardless of market classes 2 yr after application of isoxaflutole alone or in tank mix with atrazine. Based on these results, it is recommended that none of the market classes of dry bean tested in this study should be grown 1 year after an application of isoxaflutole or isoxaflutole plus atrazine. A recropping interval of 2 years is currently recommended following applications of isoxaflutole or isoxaflutole plus atrazine for these market classes of dry bean.

Tolerance of White Beans to Postemergence Broadleaf Herbicides

2004 ◽  
Vol 18 (4) ◽  
pp. 893-901 ◽  
Author(s):  
Peter H. Sikkema ◽  
Nader Soltani ◽  
Christy Shropshire ◽  
Todd Cowan
Keyword(s):  
Moisture Content ◽  
Plant Height ◽  
Weed Control ◽  
Dry Weight ◽  
Seed Moisture Content ◽  
Shoot Dry Weight ◽  
Seed Moisture ◽  
White Bean

Weed control in white beans is currently limited by the small number of registered herbicides. The tolerance of two white bean cultivars, ‘AC Compass’ and ‘OAC Thunder’, to various postemergence (POST) herbicides at the maximum use rate and twice the maximum use rate for soybean or corn was evaluated at two Ontario locations in 2001 and 2002. Generally, the two cultivars did not differ in their response to the POST herbicides. POST applications of imazamox plus fomesafen, imazamox plus bentazon, and cloransulam-methyl decreased plant height, shoot dry weight, and yield by as much as 29, 41, and 55%, respectively, and increased seed moisture content up to 3.9%. POST applications of thifensulfuron, chlorimuron, and bromoxynil decreased plant height as much as 57%, shoot dry weight by up to 71%, yield as much as 93% and increased seed moisture content up to 15.5%. Based on these results, AC Compass and OAC Thunder white beans do not possess sufficient tolerance to support the registration of imazamox plus bentazon, imazamox plus fomesafen, cloransulam-methyl, thifensulfuron, chlorimuron, and bromoxynil.

Halosulfuron Tank-Mixes Applied PRE in White Bean

2016 ◽  
Vol 30 (1) ◽  
pp. 57-66 ◽  
Author(s):  
Zhenyi Li ◽  
Rene C. Van Acker ◽  
Darren E. Robinson ◽  
Nader Soltani ◽  
Peter H. Sikkema
Keyword(s):  
Weed Control ◽  
Dry Weight ◽  
Visible Injury ◽  
Dry Bean ◽  
Common Lambsquarters ◽  
Weed Density ◽  
Wild Mustard ◽  
Green Foxtail ◽  
White Bean ◽  
Bean Yield

White bean tolerance and weed control were examined by applying halosulfuron alone or in combination with pendimethalin, dimethenamid-P, orS-metolachlor applied PRE. All herbicides applied alone or in combination caused less than 3% visible injury 1 and 4 wk after emergence (WAE). Halosulfuron applied PRE provided greater than 95% control of common lambsquarters, wild mustard, redroot pigweed, and common ragweed and less than 55% control of green foxtail at 4 and 8 WAE. Weed density and dry weight at 8 WAE paralleled the control ratings. Dry bean yields in halosulfuron plus a soil applied grass herbicide did not differ compared to the weed-free control. Green foxtail competition with halosulfuron PRE applied alone resulted in reduced white bean yield compared to the weed-free control.

Tolerance of Otebo Bean (Phaseolus vulgaris) to New Herbicides in Ontario

2006 ◽  
Vol 20 (4) ◽  
pp. 862-866 ◽  
Author(s):  
Peter H. Sikkema ◽  
Darren E. Robinson ◽  
Christy Shropshire ◽  
Nader Soltani
Keyword(s):  
Moisture Content ◽  
Plant Height ◽  
Weed Management ◽  
Safety Margin ◽  
Dry Weight ◽  
Field Trials ◽  
High Rate ◽  
Seed Moisture Content ◽  
Shoot Dry Weight ◽  
Seed Moisture

Weed management is a major production issue facing otebo bean growers in Ontario. Field trials were conducted at six Ontario locations during a 2-yr period (2003 and 2004) to evaluate the tolerance of otebo bean to the preplant incorporated (PPI) application of EPTC at 4,400 and 8,800 g ai/ha, trifluralin at 1,155 and 2,310 g ai/ha, dimethenamid at 1,250 and 2,500 g ai/ha,S-metolachlor at 1,600 and 3,200 g ai/ha, and imazethapyr at 75 and 150 g ai/ha. EPTC, trifluralin, dimethenamid, andS-metolachlor applied PPI resulted in minimal (less than 5%) visual injury and with exception of the low rate of dimethenamid causing a 16% reduction in shoot dry weight and the high rate causing an 8% plant height reduction had no adverse effect on plant height, shoot dry weight, seed moisture content, and yield. Imazethapyr applied PPI caused up to 7% visual injury and reduced plant height, shoot dry weight, and yield 8, 18, and 12% at 75 g/ha and 19, 38, and 27% at 150 g/ ha, respectively. Seed moisture content was also reduced by 0.4% with both rates. Based on these results, otebo bean is not tolerant of imazethapyr applied PPI at rates as low as 75 g/ha, the proposed use rate. EPTC, trifluralin, dimethenamid, andS-metolachlor applied PPI have a 2× rate crop safety margin for use in otebo bean weed management.

Responses of Dry Beans to Flumioxazin

2005 ◽  
Vol 19 (2) ◽  
pp. 351-358 ◽  
Author(s):  
Nader Soltani ◽  
Stephen Bowley ◽  
Peter H. Sikkema
Keyword(s):  
Plant Height ◽  
Field Experiments ◽  
Dry Weight ◽  
Kidney Bean ◽  
Dry Beans ◽  
Black And White ◽  
Shoot Dry Weight ◽  
Kidney Beans ◽  
White Bean ◽  
Market Class

There is little information on the sensitivity of dry beans to flumioxazin. Tolerance of eight cultivars of dry beans representing four market classes (black, cranberry, kidney, and white beans) to preplant incorporated (PPI) and preemergence (PRE) applications of flumioxazin at the rate of 52.5, 70, and 140 g ai/ha were studied in three field experiments in Ontario in 2002 and 2003. There were no differences (P < 0.05) between two cultivars within a market class in their responses to flumioxazin. However, the four market classes differed in their responses to flumioxazin. Black and white beans were more sensitive to the PRE application of flumioxazin than cranberry and kidney beans. Flumioxazin applied PRE at 140 g/ha caused as much as 34% visual injury and reduced plant height by 23 to 28%, shoot dry weight by 35 to 39%, and yield by 20 to 30% in black and white bean market classes. Flumioxazin-applied PPI did not injure any market class. On the basis of this research, there is an acceptable margin of crop safety in these black and white bean cultivars only when flumioxazin is applied PPI. The two cranberry and kidney bean cultivars were tolerant to all rates of flumioxazin applied both PPI and PRE.

Tolerance of adzuki bean to pre-emergence herbicides

2015 ◽  
Vol 95 (5) ◽  
pp. 959-963 ◽  
Author(s):  
Nader Soltani ◽  
Robert E. Nurse ◽  
Christy Shropshire ◽  
Peter H. Sikkema
Keyword(s):  
Adverse Effect ◽  
Plant Height ◽  
Seed Yield ◽  
Weed Management ◽  
Dry Weight ◽  
Adzuki Bean ◽  
Seed Moisture Content ◽  
Shoot Dry Weight ◽  
Seed Moisture ◽  
Plant Stand

Soltani, N., Nurse, R. E., Shropshire, C. and Sikkema, P. H. 2015. Tolerance of adzuki bean to pre-emergence herbicides. Can. J. Plant Sci. 95: 959–963. Limited pre-emergence herbicide options are available for weed management in adzuki bean in Ontario. Eight field trials were conducted in Ontario over a 3-yr period (2012, 2013, 2014) to evaluate the tolerance of adzuki bean to pyroxasulfone (150 and 300 g a.i. ha−1), flumioxazin (71 and 142 g a.i. ha−1), sulfentrazone (420 and 840 g a.i. ha−1), fomesafen (240 and 480 g a.i. ha−1), imazethapyr (75 and 150 g a.i. ha−1), and cloransulam-methyl (35 and 70 g a.i. ha−1) applied pre-emergence. Pyroxasulfone, flumioxazin and sulfentrazone applied pre-emergence at the proposed 1× and 2× rates caused 25–96% injury and reduced plant stand up to 78%, shoot dry weight up to 95%, plant height up to 67% and seed yield up to 76% in adzuki bean. Cloransulam-methyl resulted in 1 to 9% injury with no adverse effect on plant stand, shoot dry weight, plant height, seed moisture content and seed yield of adzuki bean. Fomesafen and imazethapyr resulted in 1–3% injury with no adverse effect on plant stand, shoot dry weight, plant height, seed moisture content and seed yield of adzuki bean. Based on these results, pyroxasulfone, flumioxazin and sulfentrazone do not have an adequate margin of crop safety for weed management in adzuki bean. Cloransulam-methyl has potential for use in adzuki bean, especially at the lower rate. Imazethapyr and fomesafen at the rates evaluated can be used safely in adzuki bean production under Ontario environmental conditions.

Response of adzuki bean to pre-emergence herbicides

2006 ◽  
Vol 86 (2) ◽  
pp. 601-604 ◽  
Author(s):  
P. H. Sikkema ◽  
N. Soltani ◽  
C. Shropshire ◽  
D. E. Robinson
Keyword(s):  
Plant Height ◽  
Weed Management ◽  
Dry Weight ◽  
Field Trials ◽  
Adzuki Bean ◽  
Seed Moisture Content ◽  
Shoot Dry Weight ◽  
Seed Maturity ◽  
Seed Moisture ◽  
Adequate Margin

Limited herbicide options are available to adzuki bean growers in southwestern Ontario. Six field trials were conducted in Ontario during 2003 and 2004 to evaluate the tolerance of adzuki bean to dimethenamid (1250 and 2500 g a.i. ha-1), S-metolachlor (1600 and 3200 g a.i. ha-1), clomazone (1000 and 2000 g a.i. ha-1), and imazethapyr (75 and 150 g a.i. ha-1) applied pre-emergence. Dimethenamid caused up to 37% visual injury and reduced plant height, shoot dry weight and yield 27, 59 and 52%, respectively. Seed maturity was also delayed by dimethenamid at 2500 g ha-1. S-metolachlor caused up to 34% visual inj ury and reduced plant height, shoot dry weight and yield 27, 48 and 48%, respectively. Clomazone caused 53% visual injury and reduced plant height, shoot dry weight and yield 47, 84 and 78%, respectively. Imazethapyr caused up to 6% visual injury; however, this injury was transient with no adverse effect on plant height, shoot dry weight, seed moisture content and yield of adzuki bean. Based on these results, dimethenamid, S-metolachlor and clomazone applied pre-emergence (PRE) do not have an adequate margin of crop safety for use in adzuki bean at the doses evaluated. However, imazethapyr applied PRE has an adequate margin of crop safety for weed management in adzuki bean production in Ontario at the doses evaluated. Key words: Clomazone, dimethenamid, imazethapyr, S-metolachlor, tolerance

Purple Moonflower: Emergence, Growth, Reproduction

Weed Science ◽  
1977 ◽  
Vol 25 (2) ◽  
pp. 163-167 ◽  
Author(s):  
J.M. Chandler ◽  
R.L. Munson ◽  
C.E. Vaughan
Keyword(s):  
Soil Depth ◽  
Seedling Emergence ◽  
Dry Weight ◽  
Field Studies ◽  
Seed Moisture Content ◽  
Major Mechanism ◽  
Seed Moisture ◽  
Wet Weight ◽  
Number Of Leaves ◽  
Days After Anthesis

Purple moonflower's (Ipomoea turbinata Lagasca y Segura) vegetative growth and seed maturation were characterized in noncompetitive field studies. Seedling emergence of 50% or greater of mature scarified seed occurred to a soil depth of 12 cm. At vegetative maturity a typical plant produced 11 primary, 50 secondary, 94 tertiary, and 7 quaternary runners having a total length of 185 m. The average number of leaves per plant was 1,120. Maximum seed size, seed wet weight, occurrence of first mottled seed, and first capacity to germinate occurred 20 days after anthesis in immature seed that were removed from the seed pod. Maximum germination occurred at 26 days after anthesis. Seed moisture content (dry weight basis) reached 8.5%, seed had formed an impermeable seed coat, and physiological maturity (defined as maximum dry weight) occurred 34 days after anthesis. The total number of purple moonflower seed produced per plant averaged 9350. The major mechanism of seed dormancy was impermeability of seed coats.

Response of dry bean to preplant incorporated and preemergence applications of pyroxasulfone

2009 ◽  
Vol 89 (5) ◽  
pp. 993-997 ◽  
Author(s):  
N. Soltani ◽  
C. Shropshire ◽  
P H Sikkema
Keyword(s):  
Dry Weight ◽  
Field Trials ◽  
High Rate ◽  
Visible Injury ◽  
Dry Bean ◽  
Application Timing ◽  
Shoot Dry Weight ◽  
Rate Dependent ◽  
Bean Yield ◽  
Adequate Margin

Three field trials were conducted over a 2-yr period at Exeter (2007, 2008) and Ridgetown (2007), Ontario to evaluate the tolerance of two market classes and two cultivars of each market class (cranberry, Etna and Hooter; kidney, Red Kanner and Red Hawk) of dry bean to preplant incorporated (PPI) and preemergence (PRE) applications of pyroxasulfone at 209 and 418 g a.i. ha-1. All treatments including the non-treated control were maintained weed free during the growing season. There was greater injury when pyroxasulfone was applied PPI than PRE, and injury was greater with the high rate at 1, 2, and 4 wk after emergence (WAE). Pyroxasulfone at 209 and 418 g a.i. ha-1 caused as much as 32 and 61% visible injury when applied PPI and 15 and 30% visible injury when applied PRE in dry bean, respectively. Pyroxasulfone at 209 and 418 g a.i. ha-1 decreased shoot dry weight as much as 60 and 80% when applied PPI and 30 and 50% when applied PRE in dry bean, respectively. Plant height was not affected by pyroxasulfone application timing, but was rate dependent. Height was reduced 14, 13, 22 and 13% at 209 g a.i. ha-1 and 24, 31, 42 and 27% at 418 g a.i. ha-1 for Etna, Hooter, Red Kanner and Red Hawk cultivars, respectively. Dry bean yield was reduced as much as 29% at 209 g a.i. ha-1 and 45% at 418 g a.i. ha-1. This research shows that there is not an adequate margin of crop safety for pyroxasulfone applied PPI or PRE at the rates evaluated in Etna, Hooter, Red Kanner and Red Hawk dry beans in Ontario.Key words: Cranberry bean, Etna bean, kidney bean, Hooter bean, Phaseolus vulgaris L., Red Hawk bean, Red Kanner bean, pyroxasulfone

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