Reducing Grain Sorghum (Sorghum bicolor L. Moench) Injury From Postemergence Application of Mesotrione With Dicamba

Weed management in grain sorghum is limited by the number of herbicide options. A two-year (2017-2018) field study was conducted at the Mississippi State University Delta Research and Extension Center, in Stoneville, MS to evaluate the response of grain sorghum to mesotrione application alone or when tank-mixed with dicamba at the two-leaf and four-leaf growth stage of sorghum. Mesotrione was applied at 0.07 and 0.105 kg ai ha-1 alone or was tank-mixed with dicamba at 0.28 kg ae ha-1. Significant injury to grain sorghum from all herbicide treatments was observed compared with the untreated check. Increase in mesotrione application rate increased injury to grain sorghum from 14 to 19% at two-leaf and from 10 to 24% at the four-leaf stage by 4 weeks after application (WAA) in 2017. Adding dicamba to mesotrione reduced grain sorghum injury in both years. At 4-leaf sorghum application stage, mesotrione applied at 0.07 kg ha-1 resulted in greater grain yield than all other herbicide treatments, except mesotrione (0.105 kg ha-1) + NIS in 2017. Our results indicate that adding dicamba to mesotrione safes grain sorghum from injury caused by mesotrione alone.

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Sensitivity and Recovery of Grain Sorghum to Simulated Drift Rates of Glyphosate, Glufosinate, and Paraquat

Agriculture ◽

10.3390/agriculture9040070 ◽

2019 ◽

Vol 9 (4) ◽

pp. 70 ◽

Cited By ~ 1

Author(s):

Ralph Hale ◽

Taghi Bararpour ◽

Gurpreet Kaur ◽

John Seale ◽

Bhupinder Singh ◽

...

Keyword(s):

Growth Stage ◽

Leaf Growth ◽

Flag Leaf ◽

Grain Sorghum ◽

Yield Reduction ◽

Leaf Stage ◽

Herbicide Treatments ◽

Significant Yield ◽

Glyphosate Drift ◽

Herbicide Drift

A field experiment was conducted in 2017 and 2018 to evaluate the sensitivity and recovery of grain sorghum to the simulated drift of glufosinate, glyphosate, and paraquat at two application timings (V6 and flag leaf growth stage). Paraquat drift caused maximum injury to sorghum plants in both years, whereas the lowest injury was caused by glyphosate in 2017. Averaged over all herbicide treatments, injury to grain sorghum from the simulated herbicide drift was 5% greater when herbicides were applied at flag leaf stage, as compared to herbicide applications at the six-leaf stage in 2017. In 2018, injury from glyphosate drift was higher when applied at the six-leaf stage than at the flag leaf stage. Paraquat and glufosinate drift caused more injury when applied at flag leaf stage than at six-leaf stage at 14 days after application in 2018. About 21% to 29% of injury from the simulated drift of paraquat led to a 31% reduction in grain sorghum yield, as compared to a nontreated check in 2017. The simulated drift of glyphosate and glufosinate did not result in any significant yield reduction compared to the nontreated check in 2017, possibly due to the recovery of sorghum plants after herbicides’ drift application.

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Weed control with postemergence glyphosate tank mixes in glyphosate-resistant soybean

Canadian Journal of Plant Science ◽

10.4141/cjps-2014-060 ◽

2014 ◽

Vol 94 (7) ◽

pp. 1239-1244 ◽

Cited By ~ 2

Author(s):

Kimberly D. Walsh ◽

Nader Soltani ◽

Lynette R. Brown ◽

Peter H. Sikkema

Keyword(s):

Weed Control ◽

Weed Management ◽

Field Trials ◽

Common Ragweed ◽

Common Lambsquarters ◽

Herbicide Treatments ◽

Untreated Check

Walsh, K. D., Soltani, N., Brown, L. R. and Sikkema, P. H. 2014. Weed control with postemergence glyphosate tank mixes in glyphosate-resistant soybean. Can. J. Plant Sci. 94: 1239–1244. Six field trials were conducted over a 3-yr period (2011, 2012 and 2013) in Ontario, Canada, to evaluate various postemergence (POST) glyphosate tank mixes for weed management in glyphosate-resistant (GR) soybean. Herbicide treatments included glyphosate applied alone or mixed with acifluorfen, fomesafen, bentazon and thifensulfuron-methyl. Glyphosate tank mixtures with acifluorfen, fomesafen, bentazon and thifensulfuron-methyl caused GR soybean injury of up to 21, 11, 4 and 14% at 7 d after treatment (DAT), which was reduced to 5, 0, 0 and 2% by 28 DAT, respectively. Velvetleaf, green pigweed, common ragweed and common lambsquarters control ranged from 55 to 95, 93 to 100, 70 to 92 and 81 to 98% at 28 DAT respectively. Relative to glyphosate alone, tank mixtures with thifensulfuron-methyl provided equivalent to increased weed control, while acifluorfen, fomesafen and bentazon provided equivalent to reduced weed control. All herbicide tank mixtures resulted in higher yields (3.8–4.0 t ha−1) than the untreated check (2.7 t ha−1), and were generally equivalent to glyphosate alone (4.1 t ha−1). Results from this study indicate that the glyphosate tank mixtures evaluated did not provide a benefit over glyphosate alone.

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Qualitative Assessment of the Economic Impacts of Horticulture Research and Extension at MSU Coastal Research and Extension Center

Horticulturae ◽

10.3390/horticulturae6040106 ◽

2020 ◽

Vol 6 (4) ◽

pp. 106

Author(s):

Benedict Posadas ◽

Patricia Knight ◽

Eric Stafne ◽

Christine Coker ◽

Eugene Blythe ◽

...

Keyword(s):

Nonprofit Organizations ◽

Economic Impacts ◽

Qualitative Assessment ◽

Mississippi State University ◽

State University ◽

Faculty And Staff ◽

Extension Center ◽

Coastal Research ◽

Extension Staff

This paper summarizes opinions on the economic impacts of horticulture research and extension at the Mississippi State University, Coastal Research and Extension Center. More than 8400 horticulture producers, master gardeners, research and extension staff, and nonprofit organizations participated in horticulture events during the last five years. Qualitative assessments of horticulture research and extension performed by the faculty and staff were solicited during voluntary surveys.

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Weed Management Programs in Grain Sorghum (Sorghum bicolor)

Agriculture ◽

10.3390/agriculture9080182 ◽

2019 ◽

Vol 9 (8) ◽

pp. 182 ◽

Cited By ~ 1

Author(s):

Taghi Bararpour ◽

Ralph R. Hale ◽

Gurpreet Kaur ◽

Bhupinder Singh ◽

Te-Ming P. Tseng ◽

...

Keyword(s):

Sorghum Bicolor ◽

Weed Control ◽

Weed Management ◽

Grain Sorghum ◽

Amaranthus Palmeri ◽

Ipomoea Hederacea ◽

Ipomoea Lacunosa ◽

Weed Interference ◽

Herbicide Treatments ◽

Sida Spinosa

A field study was conducted in Arkansas over three years to evaluate various herbicide treatments, including sequential and tank-mix applications for weed control in grain sorghum (Sorghum bicolor). The herbicide treatments used were quinclorac, atrazine + dimethenamid-p, S-metolachlor followed by (fb) atrazine + dicamba, dimethenamid-p fb atrazine, S-metolachlor + atrazine fb atrazine, S-metolachlor + mesotrione, and S-metolachlor fb prosulfuron. All herbicide treatments provided excellent (90% to 100%) control of Ipomoea lacunosa, Ipomoea hederacea var. integriuscula, and Sida spinosa by 12 weeks after emergence. Quinclorac and S-metolachlor fb prosulfuron provided the lowest control of Ipomoea lacunosa, Urochloa platyphylla, Amaranthus palmeri, and Ipomoea hederacea var. integriuscula. Weed interference in the non-treated control reduced grain sorghum yield by 50% as compared to the weed-free control. S-metolachlor + mesotrione and S-metolachlor fb prosulfuron reduced sorghum yields by 1009 to 1121 kg ha−1 compared to other herbicide treatments. The five best herbicide treatments in terms of weed control and grain sorghum yield were quinclorac, atrazine + dimethenamid-p, S-metolachlor fb atrazine + dicamba, dimethenamid-p fb atrazine, and the standard treatment of S-metolachlor + atrazine fb atrazine.

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Economic Impacts of Horticulture Research and Extension at MSU Coastal Research and Extension Center

Horticulturae ◽

10.3390/horticulturae7080236 ◽

2021 ◽

Vol 7 (8) ◽

pp. 236

Author(s):

Benedict C. Posadas ◽

Patricia R. Knight ◽

Eric T. Stafne ◽

Christine E. H. Coker ◽

Gary Bachman ◽

...

Keyword(s):

Economic Impacts ◽

Value Added ◽

Mississippi State University ◽

State University ◽

Extension Programs ◽

The Past ◽

Adult Participants ◽

Federal Taxes ◽

Extension Center ◽

Coastal Research

This paper summarizes the estimates of the total changes in sales, expenses, and income of participants of the horticulture research and extension programs at the Mississippi State University—Coastal Research and Extension Center for the past five years. Major items outline the estimation procedures for the past five years. The average annual values were used in estimating the total economic impacts of added gross sales, expenses, and incomes of participants in horticulture events. The cumulative total impacts reach USD 8.7 million in sales, 76 jobs, USD 1.4 million in labor income, USD 2.4 million in value-added, and USD 0.4 million in local, state, and federal taxes. In addition, the total willingness to pay for the horticulture program by the adult participants reached USD 1.8 million. In comparison, the annual public spending on the horticulture program averaged USD 1.4 million, creating additional substantial economic impacts to the region.

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Tolerance of pintoi peanut to PRE and POST herbicides

Weed Technology ◽

10.1017/wet.2020.82 ◽

2020 ◽

Vol 34 (6) ◽

pp. 870-875

Author(s):

Logan J. Martin ◽

José Luiz C.S. Dias ◽

Brent A. Sellers ◽

Jason A. Ferrell ◽

Ramon G. Leon ◽

...

Keyword(s):

United States ◽

Weed Management ◽

Southeastern United States ◽

Warm Season ◽

Future Research ◽

Herbicide Application ◽

Forage Crop ◽

Herbicide Treatments ◽

Perennial Legume ◽

Significant Injury

AbstractPintoi peanut is a warm-season perennial legume that shows promise as a forage crop for the southeastern United States, however, little is known about the proper methods of weed management during establishment for this species. The objective of this study was to determine the ability of pintoi peanut to tolerate applications of PRE and POST herbicides during the year of and year after planting. The effects of herbicide treatments on percentage of visual estimates of injury and stand counts of pintoi peanut were investigated at Ona and Marianna, FL, in 2015 and 2016. All PRE herbicides did not result in significant injury or stand reduction. Pintoi peanut’s tolerance to POST herbicides was higher when plants were emerged for at least 2 wk prior to herbicide application. Stands of pintoi peanut that were planted the previous year appear to tolerate all herbicides examined in this work, except sulfosulfuron. Results of this study indicate that at the year of planting pintoi peanut is tolerant to PRE applications of pendimethalin, imazethapyr, and imazapic. Pintoi peanut appears to tolerate applications of 2,4-D, carfentrazone, imazapic and imazethapyr the year after planting at the rates utilized in this study. Future research should evaluate the effects of multiple herbicide applications and tank-mixes to obtain satisfactory weed control and selectivity in pintoi peanut swards.

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Residual activity of herbicides used in soybean agriculture on grain sorghum crop succession

Planta Daninha ◽

10.1590/s0100-83582010000500016 ◽

2010 ◽

Vol 28 (spe) ◽

pp. 1087-1095 ◽

Cited By ~ 8

Author(s):

H.A. Dan ◽

L.G.M. Dan ◽

A.L.L. Barroso ◽

S.O. Procópio ◽

R.S. Oliveira JR. ◽

...

Keyword(s):

Weed Management ◽

Block Design ◽

Residual Activity ◽

High Sensitivity ◽

Grain Sorghum ◽

Herbicide Application ◽

Randomized Block Design ◽

Herbicide Treatments ◽

Chlorimuron Ethyl ◽

Crop Succession

The sorghum is a kind of prominence before the cultures used in succession in the Brazil. However, little information concerning the effects of residual activity of herbicides on the crop in this region are known. The objective of this study was to evaluate the residual activity of herbicides used in weed management in soybeans as well as check their effects on grain sorghum grown in succession. For the field experiment, we used a randomized block design with four replications. Eight herbicide treatments were evaluated: imazaquin (0,161 kg ha-1), diclosulam (0,035 kg ha-1), sulfentrazone (0,600 kg ha-1) and flumioxazin (0,05 kg ha-1) in applications made before emergency and chlorimuron-ethyl (0,015 kg ha-1), imazethapyr (0,060 kg ha-1), imazethapyr (0,100 kg ha-1) and fomesafen (0,250 kg ha-1) applied post-emergence soybean (V3 stadium, 18 DAE), and a control without herbicide application. The grain sorghum (cv. AG-1040) was sown after the harvest of soybeans. The residual activity of these herbicides was determined by bioassay, using the same sorghum cultivars evaluated in the field during the period from 0 to 200days after application the treatments. The sorghum crop showed high sensitivity to residual activity of the herbicide sulfentrazone, diclosulam and imazethapyr dose of 0,100 kg ha-1, even when grown after soybean harvest. Furthermore, the residual activity of sulfentrazone exceeded the range of assessment of bioassay, and more than 200 days.

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Quantitative Assessment of the Economic Impacts of Horticulture Research and Extension at MSU Coastal Research and Extension Center

10.20944/preprints202107.0486.v1 ◽

2021 ◽

Author(s):

Benedict C. Posadas ◽

Patricia R. Knight ◽

Eric T. Stafne ◽

Christine E.H. Coker ◽

Gary Bachman ◽

...

Keyword(s):

Economic Impacts ◽

Value Added ◽

Mississippi State University ◽

State University ◽

Extension Programs ◽

The Past ◽

Adult Participants ◽

Federal Taxes ◽

Extension Center ◽

Coastal Research

This paper summarizes the estimates of the total changes in sales, expenses, and income of participants of the horticulture research and extension programs at the Mississippi State University - Coastal Research and Extension Center for the past five years. Major items outline the estimation procedures for the past five years. The average annual values were used in estimating the total economic impacts of added gross sales, expenses, and incomes of participants in horticulture events. The cumulative total impacts reach $8.7 million in sales, 76 jobs, $1.4 million in labor income, $2.4 million in value-added, and $0.4 million in local, state, and federal taxes. In addition, the total willingness to pay for the horticulture program by the adult participants reached $1.8 million. In comparison, the annual public spending on the horticulture program averaged $1.4 million, creating additional substantial economic impacts to the region.

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Persistence of Norflurazon in Five Georgia Soils

Weed Science ◽

10.1017/s0043174500067503 ◽

1986 ◽

Vol 34 (4) ◽

pp. 595-599 ◽

Cited By ~ 16

Author(s):

Jill Schroeder ◽

Philip A. Banks

Keyword(s):

Organic Matter Content ◽

Grain Sorghum ◽

Application Rate ◽

Matter Content ◽

Clay Loam ◽

Soil Organic Matter Content ◽

Important Method ◽

Sandy Clay Loam ◽

Rate Of Dissipation ◽

Significant Injury

Norflurazon [4-chloro-5-(methylamino)-2-(3-(trifluoromethyl)phenyl)-3(2H)-pyridazinone] persistence in five Georgia soils after application to the same plots in 1982 and 1983 was characterized by rapid initial degradation followed by slow loss of the herbicide. The rate of norflurazon loss at each location for each year was not affected by application rate (1.7 or 3.4 kg ai/ha). Relative rates of norflurazon loss were Dothan loamy sand ≥ Greenville sandy clay loam ≥ Rome gravelly clay loam = Appling coarse sanely loam > Bradson clay loam. The rate of dissipation was slower in 1983 than 1982 in the Greenville and Appling soils. Cool and/or dry environmental conditions combined with higher soil organic matter content caused slower herbicide loss. Norflurazon residue 1 yr after treatment in all soils was greater in 1983 than in 1982. Significant injury to grain sorghum [Sorghum bicolor(L.) Moench. ‘BR 64’) was observed in the spring of 1984 at all locations in all plots that were treated with norflurazon for the previous two seasons. The degree of injury corresponded to the concentration of norflurazon detected at that sampling date. Leaching did not appear to be an important method of norflurazon loss.

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Weed Management in Peanuts

EDIS ◽

10.32473/edis-wg008-2020 ◽

2020 ◽

Vol 2020 (3) ◽

Author(s):

Pratap Devkota

Keyword(s):

Weed Control ◽

Weed Management ◽

Management Practices ◽

Application Rate ◽

Good Management ◽

Peanut Production

Successful weed control in peanuts involves use of good management practices in all phases of peanut production. This 11-page document lists herbicide products registered for use in Florida peanut production, their mode of actions group, application rate per acre and per season, and reentry interval. It also discusses the performance of these herbicides on several weeds under Florida conditions. Written by J. A. Ferrell, G. E. MacDonald, and P. Devkota, and published by the UF/IFAS Agronomy Department, revised May 2020.

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