Effects of humidity and moisture stress on glyphosate control of <i>Cyperus rotundus</i> L.*

Chase, R. L.; Appleby, Arnod P.

doi:10.1111/j.1365-3180.1979.tb01533.x

Cited by 47 publications

(45 citation statements)

References 12 publications

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“…was more evident at high temperatures (Tanipat and Adkins 1992). The adverse drought effect on glyphosate applied to purple nutsedge (Cyperus rotundus L.) was partly alleviated by high RH, which could be attributable to enhanced herbicide translocation under high RH (Chase and Appleby 1979). Similar results were obtained when poverty brome (Bromus sterilis) was treated with metoxuron [3-(3-chloro-4-methoxyphenyl)-1,1-dimethylurea] (Blair et al 1983).…”

supporting

confidence: 72%

Influence of Drought on Graminicide Phytotoxicity in Wild Oat (Avena fatua) Grown under Different Temperature and Humidity Conditions

Xie

Hsiao

1997

J Plant Growth Regul

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Controlled environmental experiments were carried out to determine the phytotoxicity of several graminicides on wild oat (Avena futua L.) as influenced by combination of drought and temperature stress or drought and low relative humidity. Compared with unstressed conditions (20/15°C plus adequate soil moisture), imazamethabenz phytotoxicity to wild oat was reduced significantly when plants were exposed to a combination of drought and high temperature (30/20°C) stress. Imazamethabenz phytotoxicity was reduced almost as much by high temperature stress alone as by a combined temperature and drought stress. When herbicides were applied to wild oat plants subjected to drought alone or to drought plus high temperature, the observed reduction in phytotoxicity from greatest to least was: fenoxaprop ‫ס‬ diclofop > flamprop > imazamethabenz. Fenoxaprop performance was most inhibited by the combination of drought plus high temperature, although drought alone and to a lesser degree, high temperature alone, inhibited fenoxaprop action. High temperature had an adverse effect on the efficacy of fenoxaprop at lower application rates. Raising fenoxaprop application rates to 400 g ha −1 overcame the inhibition caused by high temperature alone but only partially alleviated the effect of drought combined with high temperature. When plants were grown under a low temperature regimen the imposition of drought stress had little effect on imazamethabenz phytotoxicity but did reduce fenoxaprop phytotoxicity. At 25/15°C drought reduced the phytotoxicity of fenoxaprop and diclofop greatly but had no significant impact on the performance of any of the herbicides examined, regardless of soil moisture regimen.

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supporting

confidence: 72%

Influence of Drought on Graminicide Phytotoxicity in Wild Oat (Avena fatua) Grown under Different Temperature and Humidity Conditions

Xie

Hsiao

1997

J Plant Growth Regul

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“…The environmental conditions of central and southwestern Nebraska (predominant Palmer amaranth area) could also influence glyphosate performance. Glyphosate efficacy is reduced in several weeds under water stress and low‐humidity conditions . Adkins et al reported that glyphosate efficacy on Avena fatua and Urochloa panicoides was reduced under water stress combined with high temperatures, typical conditions found in central and southwestern Nebraska.…”

Section: Resultsmentioning

confidence: 99%

Distribution of glyphosate‐resistant Amaranthus spp. in Nebraska

Vieira

Samuelson

Alves

et al. 2018

Pest Management Science

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The intensive glyphosate selection pressure exerted in soybean (Glycine max) fields in eastern Nebraska is one of the major factors causing widespread occurrence of glyphosate resistance in common waterhemp in the state. The relatively low frequency of glyphosate-resistant Palmer amaranth in the state highlights the importance of the application timing and the adoption of multiple modes of action in weed management practices to delay the evolution of glyphosate resistance. © 2017 Society of Chemical Industry.

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“…While applications at the R4 and R5 stages of growth occurred when peanut was entering full pod to beginning seed, respectively. Previous research has indicated that glyphosate was translocated through chains of purple nutsedge tubers (Chase and Appleby, 1979;Elmasry and Rehm, 1977;Zandstra and Nishimoto, 1977) as well as other species (Duke et al, 2003). Thus, it is theorized that glyphosate would be translocated to peanut pods and seed as they develop.…”

Section: Resultsmentioning

confidence: 99%

Physiological Effects of Late Season Glyphosate Applications on Peanut (Arachis hypogaea) Seed Development and Germination

Grey¹,

Prostko²

2010

Peanut Science

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Field studies were conducted to determine runner type peanut response to glyphosate at 80, 160, 240, 320, and 470 g ae/ha applied 75, 90, and 105 days after planting (DAP) at Plains and Ty Ty Georgia in 2006 and 2007. Data collected included seed kernel mass, peanut pod yield, and seed germination. The two-way interaction between DAP and glyphosate rate was not observed for any variable. Data indicated that glyphosate applied at 75 DAP reduced peanut seed mass to 643 mg/kernel, which was less than the 90 or 105 DAP application masses of 669 and 665 mg/ kernel, respectively. This could be attributed to the timing of that application when peanut was in the beginning of pod fill or R3 growth stage of development. Peanut physiological response to glyphosate was reflected in peanut seed mass. As glyphosate dose increased, peanut seed mass decreased. Seed masses following glyphosate at 80, 160, 240, 320, or 470 g/ha were 669, 674, 662, 645, and 625 mg/kernel, respectively, as compared to 678 mg/kernel for the nontreated control. When glyphosate was applied at 80 or 160 g/ha, peanut pod yield was similar to the nontreated control. At glyphosate rates of 240, 320, and 470 g/ha, peanut pod yield was reduced to 88, 76, and 64% of the nontreated control. Peanut pod yield was reflective of the reductions in seed mass with increasing glyphosate rate which reduced yield. Seed germination was 96% and greater, which indicated that glyphosate applied at any rate or timing did not affect viability compared to the nontreated control.

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Effects of humidity and moisture stress on glyphosate control of Cyperus rotundus L.*

Cited by 47 publications

References 12 publications

Influence of Drought on Graminicide Phytotoxicity in Wild Oat (Avena fatua) Grown under Different Temperature and Humidity Conditions

Influence of Drought on Graminicide Phytotoxicity in Wild Oat (Avena fatua) Grown under Different Temperature and Humidity Conditions

Distribution of glyphosate‐resistant Amaranthus spp. in Nebraska

Physiological Effects of Late Season Glyphosate Applications on Peanut (Arachis hypogaea) Seed Development and Germination

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