Sugarcane (Saccharum spp.) Response to Azafeniden Applied Preemergence and Postemergence<sup>1</sup>

Viator, B. J.; Griffin, James L.; Ellis, Jeffrey M.

doi:10.1614/0890-037x(2002)016[0444:sssrta]2.0.co;2

Cited by 6 publications

(5 citation statements)

References 6 publications

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“…Sugarcane shoot population and height in mid-May averaged 94,010 shoots/ha and 57.7 cm, respectively. Viator et al (2002b) reported that sugarcane stalk population and height late season were not affected by early summer applications of sulfentrazone or azafeniden, although applications did result in injury 21 DAT of 6 to 41%. In late August, stalk population and height averaged 65,260 stalks/ha and 188 cm, respectively (data not shown).…”

Section: Resultsmentioning

confidence: 99%

“…Because of its perennial nature, sugarcane exposed to paraquat may recover fairly rapidly, but there is no information on how this might affect crop yield. Research has shown that postemergence herbicides applied to sugarcane as it is emerging from the winter dormant period in March and April can cause injury without affecting yield (Richard 1989;Viator et al 2002b). However, none of the herbicides evaluated have been nonselective contact herbicides like paraquat (Anonymous 2003;Williams et al 2002).…”

Section: Introductionmentioning

confidence: 99%

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Sugarcane Tolerance and Italian Ryegrass (Lolium multiflorum) Control with Paraquat

et al. 2004

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Paraquat applied from mid-February through early April over 2 yr was evaluated for sugarcane tolerance and Italian ryegrass control. Sugarcane 31 cm tall at application was injured 16 to 25% and 8 to 14% 28 and 56 d, respectively, after mid-March application of paraquat at 0.35 or 0.70 kg ai/ha. Early-April application to 61-cm-tall sugarcane caused 13 to 25% injury. The observed injury was not reflected in reduced sugarcane shoot population or height or sugarcane or sugar yield when compared with diuron, the standard herbicide treatment. Italian ryegrass control 28 d after the mid-February application of paraquat alone at 0.53 or 0.70 kg/ha was variable, ranging from 80% in 1994 to no more than 66% in 1995. For each year, diuron at 3.2 kg/ha in combination with both rates of paraquat increased Italian ryegrass control 28 d after the mid-February application 11 to 17 percentage points. At 56 d after the mid-February application, addition of diuron proved beneficial only in 1994 when the paraquat and diuron combinations controlled ryegrass 93% compared with no more than 62% for paraquat applied alone. In contrast, Italian ryegrass was controlled the second year no more than 80% 56 d after the mid-February application of paraquat alone or with diuron. Paraquat applied at 0.70 kg/ha with diuron in mid-March controlled Italian ryegrass 80 and 86% 28 d after treatment in 1994 and 1995, respectively. For the standard herbicides metribuzin, terbacil, and diuron applied in mid-March, weed control was no greater than 38%. Although differences in Italian ryegrass control among herbicide treatments were observed, efficacy was sufficient to reduce weed competition such that sugarcane growth and yield were not negatively affected.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sugarcane Tolerance and Italian Ryegrass (Lolium multiflorum) Control with Paraquat

et al. 2004

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“…In Florida, growers rely on PRE herbicides to provide early-season weed control at sugarcane planting (August to January) and following harvest (October to March) of the ratoon crop. Pendimethalin is a dinitroaniline herbicide applied PRE for selective control of many annual grasses in sugarcane (Anonymous 2012;Judice et al 2006;Millhollon 1993;Richard 1997;Viator et al 2002). It is applied in combination with triazine herbicides to broaden the spectrum of weed control in sugarcane (Jones and Griffin 2009;Judice et al 2006;Smith et al 2008;Viator et al 2002).…”

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confidence: 99%

Dissipation of Pendimethalin in Organic Soils in Florida

Odero

Shaner

2014

Weed technol.

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Understanding the persistence of PRE-applied pendimethalin is important in determining timing of subsequent weed management programs in sugarcane on organic soils in the Everglades Agricultural Area (EAA). Dissipation of oil- and water-based pendimethalin formulations applied PRE at 2, 4, and 8 kg ai ha−1were compared in 2011 and 2012 on organic soils in the EAA. The rate of dissipation of both formulations was very similar. Both formulations had an initial rapid rate of dissipation followed by a slower rate of dissipation. However, the initial amount of pendimethalin in the soil was higher with the water-based compared to the oil-based formulation, most likely because of the lower volatility of the water-based formulation. The half-lives (DT50s) of the oil-based formulation were 32, 18, and 10 d and 8, 8, and 12 d at 2, 4, and 8 kg ha−1, respectively, in 2011 and 2012, respectively. The DT50s of the water-based formulation were 20, 13, and 10 d and 12, 12, and 14 d at 2, 4, and 8 kg ha−1, respectively in 2011 and 2012, respectively. These DT50values were attributed to low soil water content as well as the absence of incorporation following application. Our results suggest that dissipation of pendimethalin is rapid on organic soils irrespective of the formulation when applied under dry soil conditions with no incorporation into the soil.

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“…However, the extent of potential injury across commonly planted sugarcane cultivars and the effects of application timing have not been reported. Previous studies also have shown differential tolerance of sugarcane cultivars to many herbicides including hexazinone, terbacil, and azafenidin (Richard 1989;Viator et al 2002b). Therefore, experiments were conducted to evaluate sugarcane varietal tolerance to flumioxazin applied PRE and POST at various timings in plant-cane (first production year) and first-ratoon (second production year) crops.…”

Section: Introductionmentioning

confidence: 92%

Sugarcane Response to Flumioxazin

Richard

2006

Weed technol.

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The response of the sugarcane cultivars HoCP 91-555, HoCP 85-845, and LCP 85-384 to flumioxazin during the first (plant cane) and second (first ratoon) production years was evaluated within two identical experiments, the first starting in 2000 and the second in 2001. In the plant-cane crop, flumioxazin application timings were PRE immediately following planting, fall postemergence (FPOST) 6 wk after planting, early spring postemergence (ESPOST), postemergence-directed spray (PDS) following layby cultivation, and sequential applications of FPOST followed by ESPOST. During the first-ratoon crop, flumioxazin was applied ESPOST, late-spring (LSPOST), PDS following layby cultivation, and sequentially LSPOST followed by PDS. Flumioxazin injury to sugarcane consisted mainly of stunted growth and reddening and necrosis of treated leaves. In plant cane, injury was 28% 2 wk after treatment (WAT) when applied ESPOST in one experiment but less than 10% in the other, and was no more than 13% in either experiment at 6 WAT. In the first-ratoon crop, injury was around 15% when applied ESPOST in the first experiment, but no injury was observed 6 WAT. However, in the first ratoon, injury to all cultivars was 25 to 30% when following a LSPOST application. When applied as a PDS, injury was no more than 15% 4 WAT in either plant-cane or first-ratoon sugarcane. Stalk height was reduced 15 cm compared to the nontreated control when flumioxazin was applied as a sequential application (FPOST followed by ESPOST) in plant cane and by 23 cm (LSPOST followed by PDS) in first-ratoon sugarcane. In plant cane ESPOST applications of flumioxazin reduced sugar yield (9 to 28%) within all three cultivars used in this study in both experiments with only one exception. Sequential (FPOST followed by ESPOST) applications reduced sugar yield within all cultivars (6 to 37%). PDS applications at layby reduced yields (7 to 12%) in the first experiment, but not in the second experiment. In the first-ratoon crop, LSPOST applications of flumioxazin reduced sugar yield (7 to 11%), sequential flumioxazin applications (LSPOST followed by PDS) reduced sugar yields (8 to 19%), and PDS applications at layby did not reduce yield. It appears that there is little if any difference in tolerance to flumioxazin for the cultivars used in this experiment. To avoid risk of yield loss, flumioxazin should not be applied as an over-top POST treatment to weeds in actively growing sugarcane, and care should be taken to minimize spray contact with sugarcane leaves when applying flumioxazin as a PDS at layby.

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Sugarcane (Saccharum spp.) Response to Azafeniden Applied Preemergence and Postemergence¹

Cited by 6 publications

References 6 publications

Sugarcane Tolerance and Italian Ryegrass (Lolium multiflorum) Control with Paraquat

Sugarcane Tolerance and Italian Ryegrass (Lolium multiflorum) Control with Paraquat

Dissipation of Pendimethalin in Organic Soils in Florida

Sugarcane Response to Flumioxazin

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Sugarcane (Saccharum spp.) Response to Azafeniden Applied Preemergence and Postemergence1

Cited by 6 publications

References 6 publications

Sugarcane Tolerance and Italian Ryegrass (Lolium multiflorum) Control with Paraquat

Sugarcane Tolerance and Italian Ryegrass (Lolium multiflorum) Control with Paraquat

Dissipation of Pendimethalin in Organic Soils in Florida

Sugarcane Response to Flumioxazin

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Sugarcane (Saccharum spp.) Response to Azafeniden Applied Preemergence and Postemergence¹