Lawrence E. Steckel
YOU?
Author Swipe
View article: Optimizing metribuzin rates for herbicide-resistant <i>Amaranthus</i> weed control in soybean
Optimizing metribuzin rates for herbicide-resistant <i>Amaranthus</i> weed control in soybean Open
Palmer amaranth and waterhemp are troublesome weeds in U.S. corn, soybean, and cotton production systems. Rapid evolution of resistance to herbicide from multiple sites of action in these species warrant alternate weed control options. Met…
View article: Effect of postemergence applications of aminocyclopyrachlor, aminopyralid, 2,4-D, and dicamba on non–auxin resistant soybean
Effect of postemergence applications of aminocyclopyrachlor, aminopyralid, 2,4-D, and dicamba on non–auxin resistant soybean Open
Soybean [ Glycine max (L.) Merr.] that lack resistance to auxin herbicides [i.e., not genetically modified for resistance] have well-documented responses to those particular herbicides, with yield loss being probable. When a soybean field …
View article: Impact of reduced rates of tiafenacil at vegetative growth stages on soybean growth and yield
Impact of reduced rates of tiafenacil at vegetative growth stages on soybean growth and yield Open
Tiafenacil is a new non-selective protoporphyrinogen IX oxidase (PPO)-inhibiting herbicide with both grass and broadleaf activity labeled for preplant application to corn ( Zea mays L.), cotton ( Gossypium hirsutum L.), soybean [ Glycine m…
View article: Impact of Reduced Rates of Tiafenacil on Early-Season Cotton (Gossypium hirsutum L.) Growth and Yield
Impact of Reduced Rates of Tiafenacil on Early-Season Cotton (Gossypium hirsutum L.) Growth and Yield Open
Tiafenacil is a new nonselective protoporphyrinogen IX oxidase-inhibiting herbicide with both grass and broadleaf activity labeled for preplant application to corn, cotton, soybean, and wheat. Early-season cotton emergence and growth often…
View article: Response of corn to reduced rates of tiafenacil applied at vegetative growth stages
Response of corn to reduced rates of tiafenacil applied at vegetative growth stages Open
Tiafenacil is a new nonselective protoporphyrinogen IX oxidase (PPO)–inhibiting herbicide with both grass and broadleaf activity labeled for preplant application to corn, cotton, soybean, and wheat. Early-season corn emergence and growth o…
View article: Spray interval, application order, and plant height influences control of dicamba-resistant Palmer amaranth
Spray interval, application order, and plant height influences control of dicamba-resistant Palmer amaranth Open
Palmer amaranth, which is resistant to glyphosate and protoporphyrinogen oxidase inhibitors, remains a threat to cotton and soybean production in Tennessee. This is partly due to the recent evolution of dicamba-resistant Palmer amaranth in…
View article: Response of dicamba-resistant Palmer amaranth and cotton to malathion applied in conjunction with dicamba
Response of dicamba-resistant Palmer amaranth and cotton to malathion applied in conjunction with dicamba Open
Cotton and soybean growers were offered new technologies in 2016, expanding in-crop herbicide options to include dicamba or 2,4-D. Within 3 yr of commercialization, dicamba use in these crops increased 10-fold, and growers began to report …
View article: Confirmation of dicamba-resistant Palmer amaranth in Tennessee
Confirmation of dicamba-resistant Palmer amaranth in Tennessee Open
Palmer amaranth has a long history of evolving resistance to herbicides to the point at which it has become a significant obstacle to row crop production. A survey of Palmer amaranth escapes in dicamba-resistant cotton and soybean fields i…
View article: Effect of 2,4-D formulation on volatility under field conditions
Effect of 2,4-D formulation on volatility under field conditions Open
Auxinic herbicides have been commonly used in production systems for broadleaf weed control for many years. One potential negative aspect to their use is their propensity to volatilize and move away from the treated area after application.…
View article: Resistance of Palmer amaranth (<i>Amaranthus palmeri</i>) to <i>S</i>-metolachlor in the midsouthern United States
Resistance of Palmer amaranth (<i>Amaranthus palmeri</i>) to <i>S</i>-metolachlor in the midsouthern United States Open
Palmer amaranth ( Amaranthus palmeri S. Watson) is one of the most problematic weeds in many cropping systems in the midsouthern United States because of its multiple weedy traits and its propensity to evolve resistance to many herbicides …
View article: Potassium carbonate effects on spray mixture pressure changes and final pH
Potassium carbonate effects on spray mixture pressure changes and final pH Open
This research examined a potential nuisance aspect of the use of the volatility-reducing agent (VRA) potassium carbonate when combined with glyphosate in spray-tank mixtures. A VRA is now required to be added to dicamba applications to red…
View article: Efficacy of Burndown with Sequential Applications for Junglerice (Echinochloa colona) Control
Efficacy of Burndown with Sequential Applications for Junglerice (Echinochloa colona) Control Open
Junglerice has continued to expand its range as a serious weed pest in Tennessee cotton. Both glyphosate resistance and herbicide antagonism have been documented as possible causes for poor control. Approximately 15% of junglerice populati…
View article: Cover crops and residual herbicides reduce selection pressure for Palmer amaranth resistance to dicamba‐applied postemergence in cotton
Cover crops and residual herbicides reduce selection pressure for Palmer amaranth resistance to dicamba‐applied postemergence in cotton Open
The most widely planted cotton ( Gossypium hirsutum L.) and soybean [ Glycine max (L.) Merr.] varieties in the United States are resistant to the herbicide dicamba. Measures to reduce selection pressure for dicamba‐resistant weeds is param…
View article: Performance of tank-mix partners with isoxaflutole across the Cotton Belt
Performance of tank-mix partners with isoxaflutole across the Cotton Belt Open
BASF Corp. has developed p -hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor–resistant cotton and soybean that will allow growers to use isoxaflutole in future weed management programs. In 2019 and 2020, a multi-state non-crop research p…
View article: Sicklepod [<i>Senna obtusifolia</i> (L.) H. S. Irwin & Barneby] “Getting sleepy?”
Sicklepod [<i>Senna obtusifolia</i> (L.) H. S. Irwin & Barneby] “Getting sleepy?” Open
Sicklepod [ Senna obtusifolia (L.) H. S. Irwin & Barneby], also known as Cassia obtusifolia (L.), is an annual, herbaceous, dicotyledonous plant in the Fabaceae (Leguminosae) family, which is commonly known as the bean, legume, and pea fam…
View article: Junglerice (<i>Echinochloa colona</i>) control with sequential applications of glyphosate and clethodim to dicamba
Junglerice (<i>Echinochloa colona</i>) control with sequential applications of glyphosate and clethodim to dicamba Open
Junglerice is becoming more prevalent in Tennessee, Arkansas, and Mississippi row crop fields. The evolution of glyphosate-resistant (GR) junglerice populations is one reason for the increase. Another possible explanation is that glyphosat…
View article: Dicamba emissions under field conditions as affected by surface condition – CORRIGENDUM
Dicamba emissions under field conditions as affected by surface condition – CORRIGENDUM Open
An abstract is not available for this content. As you have access to this content, full HTML content is provided on this page. A PDF of this content is also available in through the ‘Save PDF’ action button.
View article: Junglerice control with glyphosate and clethodim as influenced by dicamba and 2,4-D mixtures
Junglerice control with glyphosate and clethodim as influenced by dicamba and 2,4-D mixtures Open
Junglerice has become a major weed in the mid-south and other areas of the United States. Glyphosate resistance has been documented in junglerice populations and is part of the reason for the increase in its prevalence. However, reduced ju…
View article: Palmer Amaranth Control by Glufosinate Depends on Application Time of Day
Palmer Amaranth Control by Glufosinate Depends on Application Time of Day Open
Glufosinate is used widely to control glyphosate-resistant Palmer amaranth (Amaranthus palmeri S. Wats.) in cotton (Gossypium hirsutum L.). Previous research has shown weed control with several herbicides, including glufosinate, can be aff…
View article: Survey of glyphosate-resistant junglerice (<i>Echinochloa colona</i>) accessions in dicamba-resistant crops in Tennessee
Survey of glyphosate-resistant junglerice (<i>Echinochloa colona</i>) accessions in dicamba-resistant crops in Tennessee Open
Junglerice has become a major weed in Tennessee cotton and soybean fields. Glyphosate has been relied on to control these accessions over the past two decades, but in recent years cotton and soybean producers have reported junglerice escap…
View article: Atrazine residues in flooded and nonflooded soil and effects on soybean
Atrazine residues in flooded and nonflooded soil and effects on soybean Open
Atrazine applied at planting is commonly used for weed control in corn. With global climate change causing an increase in river flooding in the United States over the past decade, producers need information to determine the best course of …
View article: Dicamba emissions under field conditions as affected by surface condition
Dicamba emissions under field conditions as affected by surface condition Open
The evolution and widespread distribution of glyphosate-resistant broadleaf weed species catalyzed the introduction of dicamba-resistant crops that allow this herbicide to be applied POST to soybean and cotton. Applications of dicamba that…
View article: Efficacy of residual herbicides influenced by cover-crop residue for control of<i>Amaranthus palmeri</i>and<i>A. tuberculatus</i>in soybean
Efficacy of residual herbicides influenced by cover-crop residue for control of<i>Amaranthus palmeri</i>and<i>A. tuberculatus</i>in soybean Open
Field studies were conducted in 2018 and 2019 in Arkansas, Indiana, Illinois, Missouri, and Tennessee to determine if cover-crop residue interfered with herbicides that provide residual control of Palmer amaranth and waterhemp in no-till s…
View article: Field bindweed (<i>Convolvulus arvensis</i>): “all tied up”
Field bindweed (<i>Convolvulus arvensis</i>): “all tied up” Open
An abstract is not available for this content. As you have access to this content, full HTML content is provided on this page. A PDF of this content is also available in through the ‘Save PDF’ action button.
View article: Hophornbeam copperleaf (<i>Acalypha ostryifolia</i> Riddell)
Hophornbeam copperleaf (<i>Acalypha ostryifolia</i> Riddell) Open
Hophornbeam copperleaf ( Acalypha ostryifolia Riddell) is an erect, herbaceous, dicot species in the Euphorbiaceae, or spurge, family that constitutes more than 200 genera and some 6,000 species (Mayfield and Webster 2013). Although the eu…
View article: Spray mixture pH as affected by dicamba, glyphosate, and spray additives
Spray mixture pH as affected by dicamba, glyphosate, and spray additives Open
The pH of spray mixtures is an important attribute that affects dicamba volatility under field conditions. This report examined the effect of different components added to water sources that ranged in initial pH from 4.6 to 8.4. Commercial…
View article: Evaluation of the time-of-day effect of herbicides applied POST on protoporphyrinogen IX oxidase–resistant and –susceptible Palmer amaranth (<i>Amaranthus palmeri</i>)
Evaluation of the time-of-day effect of herbicides applied POST on protoporphyrinogen IX oxidase–resistant and –susceptible Palmer amaranth (<i>Amaranthus palmeri</i>) Open
Studies to evaluate the effect of application time of day (TOD) and protoporphyrinogen IX oxidase (PPO)-inhibiting herbicide–resistant Palmer amaranth on the efficacy of commonly used herbicides was conducted in Tennessee in 2017 and 2018.…
View article: Common evening-primrose (<i>Oenothera biennis</i> L.)
Common evening-primrose (<i>Oenothera biennis</i> L.) Open
An abstract is not available for this content. As you have access to this content, full HTML content is provided on this page. A PDF of this content is also available in through the 'Save PDF' action button.
View article: Dicamba volatility in humidomes as affected by temperature and herbicide treatment
Dicamba volatility in humidomes as affected by temperature and herbicide treatment Open
This research examined dicamba measurements following an application to soil inside a humidome. The dicamba formulations examined were the diglycolamine (DGA) and diglycolamine plus VaporGrip ® (DGA+VG), both applied with glyphosate. Post-…
View article: LibertyLink®, WideStrike® and XtendFlex® Tolerance to Late Postemergence Applications of Glufosinate and S-Metolachlor
LibertyLink®, WideStrike® and XtendFlex® Tolerance to Late Postemergence Applications of Glufosinate and S-Metolachlor Open
Glufosinate remains an important postemergence (POST) herbicide for controlling glyphosate-resistant Amaranthus palmeri (S. Wats) in auxin-tolerant trait systems. Although visual injury from glufosinate applications to WideStrike cultivars…