Effect of Temperature and Cultivar on the Response of Broccoli and Collard (<i>Brassica oleracea</i>) to Oxyfluorfen

Harrison, Howard F.; Peterson, Joseph K.

doi:10.1017/s0890037x00042135

Cited by 5 publications

(5 citation statements)

References 10 publications

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“…Differences observed between published sulfentrazone studies and the results from our study highlight the injury potential related to application timing to cabbage and broccoli, with differences by crop and location. Harrison and Peterson (1999) found that cultivar and temperature responses were related to observed crop injury in broccoli for oxyfluorfen-applied PRE, whereas collard ( Brassica oleracea var. viridis L.) and broccoli were observed to have injury responses to oxyfluorfen-applied POST that varied depending on temperature and cultivar.…”

Section: Resultsmentioning

confidence: 99%

Sulfentrazone crop safety and efficacy in cabbage and broccoli

Pineda-Bermudez,

Besançon,

Sosnoskie

2023

Weed Technol

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In 2021 and 2022, research was initiated to evaluate the efficacy and safety of sulfentrazone in transplanted cabbage and broccoli. Treatments included oxyfluorfen at 560 g ha-1 pre-transplant (PRE-T), sulfentrazone at 116 or 233 g ha-1 PRE-T, and S-metolachlor at 715 g ha-1 immediately applied after transplanting (POST-T) followed by (fb) oxyfluorfen at 210 g ha-1 postemergence (POST) 14 d after planting (DAP). Concerning weed cover, the weedy non-treated plots averaged between 6% (14 DAP) and 72% (42 DAP); all herbicide-treated plots averaged less than 30% cover at 42 DAP. At 14 and 28 DAP, oxyfluorfen, S–metolachlor fb oxyfluorfen, and sulfentrazone high rate reduced total monocotyledonous and dicotyledonous weed densities 62 and 100% relative to the non-treated control. Hairy galinsoga (NJ) and combined ladysthumb and prostrate knotweed (NY) density was reduced 71 to 99%. Except for the low rate of sulfentrazone, all herbicide treatments reduced weed biomass at harvest ≥ 88%. Crop injury varied in response to herbicide treatments or weed competition but was also affected by crop and location. Between 14 and 28 DAP, the greatest amount of stunting (22%) was noted in the S-metolachlor fb oxyfluorfen treatments for both locations. Averaged over treatments, greater stunting was observed in broccoli as compared to cabbage in NY, whereas stunting estimates were higher for cabbage in NJ. All NJ treatments significantly increased cabbage yield and broccoli and cabbage head sizes relative to the non-treated control. No yield difference was noted between herbicide treatments and the non-treated check in NY. Data derived from these studies will be used to enhance crop safety recommendations in Northeast production environments for sulfentrazone used PRE in transplanted cabbage and support a potential label for broccoli.

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Section: Resultsmentioning

confidence: 99%

Sulfentrazone crop safety and efficacy in cabbage and broccoli

Pineda-Bermudez,

Besançon,

Sosnoskie

2023

Weed Technol

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“…Also, temperature can affect the selectivity of some herbicides. Harrison and Peterson (1999) showed that broccoli (Brassica oleracea) was less sensitive to oxyfluorfen at temperatures between 20°C and 25°C, compared to temperatures from 10°C to 15°C.…”

Section: Resultsmentioning

confidence: 99%

Effect of adjuvants on the dissipation, efficacy and selectivity of three different pre-emergent sunflower herbicides

Andr¹,

Kočárek²,

Jursík³

et al. 2017

PLANT SOIL ENVIRON

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The aim of this work was to compare the efficacy, selectivity to sunflower and dissipation of three pre-emergent herbicides. Flurochloridone, linuron and oxyfluorfen were applied individually and each herbicide was also applied in a tank mix with two different adjuvants (a silicon-based adjuvant and paraffin oil). Small-plot field trials were carried out with sunflower in Central Bohemia in 2012 and 2015. Around 25–35% of the active ingredients in the applied herbicides were detected in soil 60 days after application in both years, except for oxyfluorfen in 2012, whose residual concentration was 60%. The tested soil adjuvants did not affect the dissipation of any of the tested herbicide in soil in either experimental year. Oxyfluorfen exhibited the highest mobility and caused the greatest degree of sunflower injury (18%), especially in the year with high rainfall shortly after application. None of the tested adjuvants significantly affected sunflower injury by any tested herbicide. The efficacy of flurochloridone and linuron on Fallopia convolvulus was strongly affected by weather conditions shortly after application. The efficacy of oxyfluorfen was around 85% and was not affected by weather conditions. The effect of adjuvant on herbicide efficacy was positive only in dry conditions, where the efficacy of flurochloridone on F. convolvulus was positively affected by the silicon-based adjuvant.

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“…ha-' singlc dosage ofsulfentrazone and the split application with two applications of93 g a.i. ha-' sulfentrazone produced signilicantly more leaf discoloration than either the low dosage of Downloaded by [Korea University] at 07:49 03 January 2015 Harrison and Peterson (1999) lbund lhat crop in,jury due to oxylluorfen lreatments with some cultivars incrcascd with broccoli and collards when air temperatures increased. The 2000 crop season had air temperatures which were 6-10°C wanner immediately following sulfcnlrazonc applications than the 1999 crop (temperature data not shown).…”

Section: Results a N D Discussionmentioning

confidence: 99%

Cabbage (Brassica oleraceaL.) Response to Sulfentrazone for Broadleaf Weed Control

Smart

Brandenberger

Makus

2001

Journal of Vegetable Crop Production

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Cabbage (Brnssicaolermm L.) has few herbicides registcred for postemergencc weed control. A relatively new herhicidc which has selcctivc postemergence potential for use in cabbage is sulfentrazone. Sull'cntrazone was applied postcmergence to 2-4 leaf stage cabbagc at 23,46,93, 140, and 187 g active ingredient (a.i.) ha-'. Rates o f 23,46, and 93 g a.i. ha-' were also applied as a split application. The initial application occurrcd at the 2-4 leaf stage of growth and the second, at ' thc 6-8 leaf growth stage. Crop injury and leal'discoloration were minimal at 3 days after treatment (DAT). However, injury was substantial at 28 DAT with thc 93, 140, and 187 g a.i. ha-l rate, and with all the split applications in both years o f the study. Palmer amamnth (Atnorutzrhus prrltneri) and yellowtop (Verbitisitia eticeluloides) were cffcctively controlled with all sulfentrazone dosagc levels when applied postemergence to cabbage, excepl at thc lowest rate of23 g a.i. ha-'. Leaf yellowing and crop st~~nting occurred with the higher rates of sull'entrazone (140 and 187 g a.i. ha-') as well as with somc of the split applications. The cabbage head (corc growing point length) was reduced with 187 g a.i. ha-l sulfcntrazone only in 1999. Height ofcahbage hcads, circumference, and head wcight were reduced by 187 g a.i. ha-' i n 1999. When sull'entrazone was applied postemergcnce to cabbage at dosage levels o f 2 3 to 93 g a.i. ha-' crop injury, stunting, yellowing, or cabbage size or weight were not advcrscly impacted. Dosages o f 46 and 93 g a.i. ha-I of sulfen~razone effectively controlled yellowtop and Palmer amaranth which currently arc not effectively controlled by any othcr rcgis~ered J. R. Srnart and D. Makus are al'liliarcd with the United Slalcs Department of Agriculture, Agricultural Rescarch Service, 2413 Edst Highway, 83 Weslaco, TX 78596. L. Brandenberger i s al'liliatctl with Texas Agriculu~ral Extension Service, Wcslaco, TX 78596. herbicide. At dosagcs of46 and 93 g a.i. ha-' sulfentrazoneeffectively controlled weeds and had no adverse effect on cahhage size or quality. [Ar-ticle col~ies a~~nilrrble ,for cr fee fio111 Tlre I-lrrwortli Docrrmerrt deliver^ Service: 1-800-342-9675. E-nmil crdrlress: Website:

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Effect of Temperature and Cultivar on the Response of Broccoli and Collard (Brassica oleracea) to Oxyfluorfen

Cited by 5 publications

References 10 publications

Sulfentrazone crop safety and efficacy in cabbage and broccoli

Sulfentrazone crop safety and efficacy in cabbage and broccoli

Effect of adjuvants on the dissipation, efficacy and selectivity of three different pre-emergent sunflower herbicides

Cabbage (Brassica oleraceaL.) Response to Sulfentrazone for Broadleaf Weed Control

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