Antidotes Reduce Injury to Grain Sorghum (Sorghum bicolor) from Acetanilide Herbicides

Weed Science ◽  
1983 ◽  
Vol 31 (6) ◽  
pp. 790-795 ◽  
Author(s):  
Daniel L. Devlin ◽  
Loren J. Moshier ◽  
Oliver G. Russ ◽  
Philip W. Stahlman

CGA-43089 [α-(cyanomethoximino)-benzacetonitrile], CGA-92194 {α-[(1,3-dioxolan-2-yl-methyl)imino] benzeneacetonitrile}, and MON-4606 [5-thiazolecarboxylic acid, benzyl ester, 2-chloro-4-(trifluoromethyl)], applied as seed treatments at 1.25 g/kg seed, prevented yield losses in grain sorghum [Sorghum bicolor(L.) Moench.] in the field due to metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide], alachlor [2-chloro-2′, 6′-diethyl-N-(methoxymethyl)acetanilide] or acetochlor [2-chloro-N-(ethoxymethyl)-6′-ethyl-o-acetotoluidide] applied at 1.7, 2.2 and 1.7 kg/ha, respectively. CGA-92194, applied at 0.8 g/kg seed, prevented yield reduction from metolachlor applied at 4.5 kg/ha. MON-4606 was more effective in protecting grain sorghum when applied as a seed treatment than when applied in the furrow with a clay or sand granule as carrier.

Weed Science ◽  
1980 ◽  
Vol 28 (6) ◽  
pp. 699-704 ◽  
Author(s):  
M. E. Winkle ◽  
J. R. C. Leavitt ◽  
O. C. Burnside

R-25788 (N,N-diallyl-2,2-dichloroacetamide) and H-31866 [N-allyl-N-(3,3-dichloroallyl)dichloroacetamide] were more effective than CDAA (N,N-diallyl-2-chloroacetamide) in preventing yield reductions to corn (Zea maysL. ‘NB-611’) from alachlor [2-chloro-2′,6′-diethyl-N-(methoxymethyl)acetanilide] or metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide] in the greenhouse. A CGA-43089 [α-(cyanomethoximino)-benzacetonitrile] seed treatment (1.25 g/kg) was more effective than a R-25788 tank mix in preventing yield reductions to grain sorghum [Sorghum bicolor(L.) Moench ‘G-623 GBR’] from alachlor or metolachlor in the greenhouse. Absorption of14C-alachlor by sorghum seedlings grown in petri dishes, and absorption, translocation, and metabolism of14C-metolachlor by sorghum seedlings grown in soil, were not affected by CGA-43089 seed treatment. Forage sorghum [Sorghum bicolor(L.) Moench ‘Rox Orange’] was used to simulate shatter cane [Sorghum bicolor(L.) Moench] in field plots. In the absence of Rox Orange, alachlor and metolachlor reduced sorghum grain yields. This yield reduction was prevented by a CGA-43089 seed treatment, but not by a R-25788 tank mix with herbicides. In plots seeded with 10,000 Rox Orange seed/57 m2, grain yields of sorghum increased as alachlor or metolachlor plus CGA-43089 rates increased. There was no grain yield response to any herbicide treatment in plots seeded with 50,000 Rox Orange seed/57 m2.


Weed Science ◽  
1983 ◽  
Vol 31 (3) ◽  
pp. 373-379 ◽  
Author(s):  
Fred W. Roeth ◽  
Orvin C. Burnside ◽  
Gail A. Wicks

CGA-43089 [α-(cyanomethoximino)-benzacetonitrile] seed treatment was evaluated at three Nebraska locations during 1979 and 1980 for grain sorghum [Sorghum bicolor(L.) Moench] protection from injury by metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide], four other chloroacetanilide herbicides, and three metolachlor +s-triazine combinations. Acetochlor [2-chloro-N-(ethoxymethyl)-6′-ethyl-o-acetotoluidide] caused the most frequent and severest injury to unprotected and protected sorghum. Soilincorporated metolachlor produced more consistent injury than preemergence application to unprotected sorghum, but placement did not affect CGA-43089 protection. Sorghum-stand reduction was the type of injury most frequently encountered, but crop yield was least affected. CGA-43089 always protected the grain sorghum from yield reduction with these herbicides.


Weed Science ◽  
1982 ◽  
Vol 30 (1) ◽  
pp. 70-73 ◽  
Author(s):  
Tsern-Shi Chang ◽  
Morris G. Merkle

Studies in growth chambers indicated that CGA-43089 {α-[(cyanomethoxy)imino] benzeneacetonitrile} applied at a rate of 1.25 g/kg of seed reduced the phytotoxicity of metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide], bensulide [o,o-diisopropyl phosphorodithioateS-ester withN-(2-mercaptoethyl) benzenesulfonamide], EPTC (S-ethyl dipropylthiocarbamate), UBI-S734 {2-[(1,2,5-dimethylphenyl)ethylsulfonyl] pyridineN-oxide} and MBR-18337 {N-[4-(ethylthio)-2-(trifluoromethyl)phenyl] methanesulfonamide} to grain sorghum [Sorghum bicolor(L.) Moench] during seed germination and seedling emergence. The protected sorghum tolerated metolachlor over a wider range of rates than it tolerated the other herbicides. CGA-43089 did not protect sorghum from the phytotoxicity of trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine). Of seven other oximes tested as seed treatments, dimethylglyoxime, benzophenone oxime, pyridine-2-aldoxime, benzoin-α-oxime, and methyl thioacetohydroxamate showed promise for increasing the tolerance of grain sorghum to metolachlor. In general, higher rates of these oximes than the rate of CGA-43089 were required for equivalent protection of sorghum.


Weed Science ◽  
1980 ◽  
Vol 28 (6) ◽  
pp. 646-649 ◽  
Author(s):  
G. S. Simkins ◽  
L. J. Moshier ◽  
O. G. Russ

The influence of acetamide herbicide applications on efficacy of CGA-43089 [α-(cyanomethoximino)-benzacetonitrile] in grain sorghum [Sorghum bicolor(L.) Moench] was studied under field conditions. Acetamide herbicides applied preplant and incorporated on a Haynie very fine sandy loam caused more grain sorghum injury in 1979 than in 1978. Reductions in plant population, plant height and yield, along with delay in maturity, were severe for acetochlor [2-chloro-N-(ethoxymethyl)-6′-ethyl-O-acetotoluidide], metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide], and alachlor [2-chloro-2′,6′-diethyl-N-(methoxymethyl)acetanilide]; moderate for diethatyl [N-(chloroacetyl)-N-(2,6-diethylphenyl)glycine], xylachlor [2-chloro-N-(2,3-dimethylphenyl)-N-(1-methylethyl)acetamide], and butam [2,2-dimethyl-N-(1-methylethyl)-N-(phenylmethyl)propanamide]; and did not occur for propachlor (2-chloro-N-isopropylacetanilide) treatments. Acetamide herbicides caused less grain sorghum injury on a Reading silt loam than on a Haynie very fine sandy loam in 1979. CGA-43089 applied as a seed treatment protected grain sorghum grown on soils treated with metolachlor, alachlor, diethatyl, or xylachlor. Metolachlor-triazine combinations at five locations in Kansas reduced yields at two locations. CGA-43089 provided protection from metolachlor injury at those two locations.


2018 ◽  
Vol 32 (5) ◽  
pp. 570-578
Author(s):  
Blake R. Barlow ◽  
Lovreet S. Shergill ◽  
Mandy D. Bish ◽  
Kevin W. Bradley

AbstractField experiments were performed in 2016 and 2017 in Missouri to determine whether interactions exist between PRE herbicides and seed treatments in soybean. The experiments consisted of a randomized complete block design with factorial arrangements of varieties, seed treatments, and herbicides. We selected two genetically similar varieties of soybean, one with known tolerance to PPO-inhibiting herbicides and one with known sensitivity. Each variety of seed received three separate seed treatment mixtures (STMs): (1) STM1, imidacloprid plus prothioconazol+penflufen+metalaxyl plus metalaxyl plusBacillus subtilis+B. pumilis, (2) STM2,Pasteuria nishizawaeplus thiamethoxam plus prothioconazol+penflufen+metalaxyl plus metalaxyl plusB. subtilis+B. pumilis, and (3) STM3, fluopyram plus imidacloprid plus prothioconazol+penflufen+metalaxyl plus metalaxyl plusB. subtilis+B. pumilis. Chlorimuron-ethyl+flumioxazin+pyroxasulfone, chlorimuron-ethyl+flumioxazin+metribuzin, and chlorimuron-ethyl+sulfentrazone were applied PRE to each variety and seed treatment combination at 1× and 2× the labeled use rate. Chlorimuron-ethyl+sulfentrazone treatment at the 2× rate resulted in greater injury of 8% and 14% to the sensitive variety than the tolerant in 2016 and 2017, respectively; this was the highest injury observed from any herbicide treatment in either year. In 2017, chlorimuron-ethyl+sulfentrazone resulted in the greatest height reductions in both varieties, but this reduction was more evident in the sensitive (19%) than in the tolerant (6%) variety. Overall, yield differences between the two varieties were not consistent between years, and for both varieties, the sulfentrazone-containing treatments resulted in the highest yield losses. The results of this research indicate that there is a larger interaction between herbicides and varieties than there is between herbicides and seed treatments, or seed treatments and varieties.


2020 ◽  
pp. 1-5
Author(s):  
Hunter D. Bowman ◽  
Tom Barber ◽  
Jason K. Norsworthy ◽  
Trenton L. Roberts ◽  
Jason Kelley ◽  
...  

Abstract Previous research has shown that glufosinate and nicosulfuron at low rates can cause yield loss to grain sorghum. However, research has not been conducted to pinpoint the growth stage at which these herbicides are most injurious to grain sorghum. Therefore, field tests were conducted in 2016 and 2017 to determine the most sensitive growth stage for grain sorghum exposure to both glufosinate and nicosulfuron. Field test were designed with factor A being the herbicide applied (glufosinate or nicosulfuron). Factor B consisted of timing of herbicide application including V3, V8, flagleaf, heading, and soft dough stages. Factor C was glufosinate or nicosulfuron rate where a proportional rate of 656 g ai ha−1 of glufosinate and 35 g ai ha−1 of nicosulfuron was applied at 1/10×, 1/50×, and 1/250×. Visible injury, crop canopy heights (cm), and yield were reported as a percent of the nontreated. At the V3 growth stage visible injury of 32% from the 1/10× rate of glufosinate and 51% from the 1/10× rate of nicosulfuron was observed. This injury was reduced by 4 wk after application (WAA) and no yield loss occurred. Nicosulfuron was more injurious than glufosinate at a 1/10× and 1/50× rate when applied at the V8 and flagleaf growth stages resulting in death of the shoot, reduced heading, and yield. Yield losses from the 1/10× rate of nicosulfuron were observed from V8 through early heading and ranged from 41% to 96%. Yield losses from the 1/50× rate of nicosulfuron were 14% to 16% at the flagleaf and V8 growth stages respectively. The 1/10× rate of glufosinate caused 36% visible injury 2 WAA when applied at the flagleaf stage, which resulted in a 16% yield reduction. By 4 WAA visible injury from either herbicide at less than the 1/10× rate was not greater than 4%. Results indicate that injury can occur, but yield losses are more probable from low rates of nicosulfuron at V8 and flagleaf growth stages.


Weed Science ◽  
1978 ◽  
Vol 26 (6) ◽  
pp. 533-538
Author(s):  
D. L. Reasons ◽  
L. S. Jeffery ◽  
T. C. McCutchen

Fluometuron [1,1-dimethyl-3-(α,α,α-trifluoro-m-tolyl)urea] and tetrafluron {N,N-dimethyl-N′-[3-(1,1,2,2-tetrafluoroethoxy) phenyl] urea} are two urea-type herbicides for weed control in cotton(Gossypium hirsutumL.). In some years, because of cotton stand failure, an alternate crop must be established. Soybeans [Glycine max(L.) Merr.] and grain sorghum [Sorghum bicolor(L.) Moench] are possible alternate crops if they can withstand the residues left from herbicides used for weed control in cotton. Soybeans and grain sorghum were planted 3, 6 and 9 weeks after fluometuron and tetrafluron applications to soil at Knoxville and Milan, Tennessee, in 1975 and 1976. Tetrafluron residues were more toxic to grain sorghum and soybeans than were fluometuron residues. Grain sorghum was less susceptible than soybeans to both herbicides. Grain sorghum was planted 3 weeks after fluometuron (1.7 kg/ha) and tetrafluron (1.7 kg/ha) applications without severe yield reduction. Soybeans were planted in non-treated soil between banded tetrafluron (1.7 kg/ha on a treated area basis), 3 weeks after herbicide application, without significant yield reduction; but when a seedbed was prepared, a 9-week waiting period was required. When soybeans were planted into soil receiving a broadcast application of tetrafluron (1.7 kg/ha), a 9-week waiting period was not sufficient to reduce the residues to a non-toxic level. Soybeans planted 6 and 9 weeks following a broadcast application of fluometuron may or may not sustain yield reduction depending on rainfall frequency and intensity and soil type.


1979 ◽  
Vol 19 (97) ◽  
pp. 225 ◽  
Author(s):  
RG Henzell ◽  
DM Persley ◽  
DS Fletcher ◽  
RS Greber ◽  
LVan Slobbe

The effect of a Johnson grass strain of sugarcane mosaic virus (SCMV-Jg) on 11 grain sorghum cultivars was assessed in three experiments in which young plants were inoculated with the virus. The 11 cultivars were Alpha, Dekalb B17, Dekalb C42t, Dekalb C42Y, Dekalb E57, Goldrush, Pride, 051 61, Q5161 VR, Tx6I0SR and Yates 233. Severe yield depression (>50%) was observed in those cultivars that developed the red stripe and red leaf symptoms. The effect on cultivars producing mosaic symptoms ranged from tolerance (Tx610SR) to yield losses of ca 25%. Yield depression was primarily due to fewer grains per panicle and reduced grain weight. The number of panicles per ha was the least affected of the yield components. In most instances, the disease delayed maturity and decreased height. A virus-resistant cultivar (Q5161 VR) showed an increase in yield when inoculated with SCMV-Jg.


2001 ◽  
Vol 41 (2) ◽  
pp. 211 ◽  
Author(s):  
I. G. Daniells ◽  
J. F. Holland ◽  
R. R. Young ◽  
C. L. Alston ◽  
A. L. Bernardi

Three field experiments using grain sorghum (Sorghum bicolor), an important dryland summer crop on the Liverpool Plains in northern New South Wales, were conducted: (i) to determine the effect of dryland salinity on the yield of commercial crops at 2 sites; (ii) to see if ridging the soil would ameliorate the problem; and (iii) to compare 16 commercial varieties for tolerance to dryland salinity. Grain sorghum was shown to be more severely affected by dryland salinity than most literature would suggest. Over 3 seasons and 2 sites, sorghum yield was reduced by 50% at soil electrical conductivity (saturation extract, ECe) levels as low as 2.8 dS/m whereas advisory literature indicated a salinity threshold (no yield reduction) for sorghum of 6.8 dS/m, and 50% yield reduction at 9.9 dS/m. Current advisory literature is based on research where salinity was artificially imposed after plants were established in non-saline soil. The measurements described in this paper were on sorghum sown into saline soil. Soil and crop management strategies (ridging the soil or choosing a tolerant variety) showed limited potential for improving yields of grain sorghum on saline soil. At one site, the ECe varied widely across the paddock but little down the soil profile at any sampling point. Hence, analysing the surface soil would indicate the salinity hazard. However, at a second site, where ECe levels in the surface soil were low (<2 dS/m) everywhere, ECe at soil depths of 1 m varied widely (from 2 to 15 dS/m) across the paddock. Soil sampling to assess salinity hazard before crop planting should therefore include the entire root zone.


2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Dan D. Fromme ◽  
Carlos J. Fernandez ◽  
W. James Grichar ◽  
Rick L. Jahn

Grain sorghum (Sorghum bicolorL. Moench) along the upper Texas Gulf Coast is planted at different row spacings, plant populations, and hybrids according to grower preference and location. This study was conducted over a 3-year period (2001 to 2003) to determine the combination of hybrid, row spacing, and plant population on yield and net return per hectare. Below average rainfall for May and June occurred in 2002 and 2003 which resulted in lower yields than 2001. In 2001 and 2003, Dekalb (DK) 54 generally produced higher yields than Asgrow (A) 571 on the 51 cm row spacing. In 2002, no differences in grain sorghum yield were found when comparing both hybrids, plant populations, or row spacing with the exception of A 571 planted at 148,000 plants/ha on 102 cm centers which resulted in a yield reduction of at least 25%. When net returns were compared regardless of year or rainfall received, net dollar value per hectare tended to be higher for the 51 cm row spacing, especially with A 571.


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