Dynamics of Sulfentrazone Applied to Sugarcane Crop Residues

Carbonari, Caio Antônio; Gomes, Giovanna Larissa Gimenes Cotrick; Trindade, Maria Lúcia Bueno; Silva, José R. M.; Velini, Edivaldo Domingues

doi:10.1614/ws-d-14-00171.1

Cited by 42 publications

(43 citation statements)

References 20 publications

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“…Between 15% and 25% of the imazapic and tebuthiuron could not be desorbed from the litter with methanol extraction (Kessler et al 2015). In our study, there was a 30% to 40% decrease in herbicide recovery when rainfall was delayed for 1 d after application, although there was no additional decrease in recovery from 1 to 7 d. Other studies have demonstrated that herbicide recovery continues to decrease as time without rainfall increases from 1 to 60 DAT (Carbonari et al 2016;Cavenaghi et al 2007;Tofoli et al 2009).…”

Section: Speciescontrasting

confidence: 38%

The influence of winter annual grass litter on herbicide availability

et al. 2019

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Invasive winter annual grass infestations on rangeland accumulate large quantities of litter on the soil surface, as plants senesce yearly and decompose slowly. It has been speculated that winter annual grass litter can adsorb soil-active herbicides and reduce overall performance. Three experiments were conducted from 2017 to 2018 at the Colorado State University Weed Research Laboratory to evaluate interception and subsequent desorption of herbicides applied to litter from three invasive winter annual grass species with simulated rainfall. Imazapic, rimsulfuron, and indaziflam were applied to medusahead [Taeniatherum caput-medusae (L.) Nevski], ventenata [Ventenata dubia (Leers) Coss.], and downy brome (Bromus tectorum L.) litter at two amounts (equivalent to 1,300 and 2,600 kg ha−1). Rainfall was simulated at 3, 6, 12, and 24 mm at 0, 1, and 7 d after herbicide application. Herbicide concentration from the collected rainfall was measured using liquid chromatography–tandem mass spectrometry. At 2,600 kg ha−1, B. tectorum herbicide interception was 84.3%, while V. dubia and T. caput-medusae averaged 76% herbicide interception. There were no differences in desorption among the three litter types. Simulated rainfall at 0 d after application recovered 100% of the intercepted rimsulfuron and imazapic from B. tectorum litter, while recovery decreased to 65% with rainfall at 1 or 7 d after application. Only 54% of indaziflam could be recovered at 0 d, and recovery decreased to 33% when rainfall was applied at 1 or 7 d after application. Applying soil-active herbicides before forecasted rain or tank mixing with a POST herbicide to provide initial control could potentially increase the amount of herbicide reaching the soil and provide more consistent invasive winter annual grass control.

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Section: Speciescontrasting

confidence: 38%

The influence of winter annual grass litter on herbicide availability

et al. 2019

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“…Divine nightshade seed within their fluid‐filled fruit were more resilient than itchgrass when exposed to 150 and 200°C for 20 to 40 s. Burning post‐harvest sugarcane residue is a common practice in Louisiana in part because post‐harvest residue retention has shown to negatively affect ratoon yield in the subsequent season (Viator et al, 2009). In addition to crop yield loss from post‐harvest residue retention, residue can intercept soil‐applied pre‐emergence herbicides and allow weeds to germinate and compete with sugarcane (Carbonari et al, 2016). A report by Ball‐Coelho et al (1993) showed burned post‐harvest sugarcane residue could result in a maximum flame temperature of 121 to 288°C.…”

Section: Resultsmentioning

confidence: 99%

Dry Heat and Exposure Time Influence Divine Nightshade and Itchgrass Seed Emergence

Spaunhorst

Orgeron

2019

Agronomy Journal

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In Louisiana, growers remove sugarcane (Saccharum spp. hybrids) residue following green‐cane harvesting by prescribed burning. Divine nightshade [Solanum nigrescens (Mart. & Gal)] and itchgrass [Rottboellia cochinchinensis (Lour.) Clayton] are problematic weeds in Louisiana sugarcane production. The objective of this study was to determine the effects of dry heat and exposure duration on divine nightshade and itchgrass emergence. Divine nightshade and itchgrass seeds were exposed to three temperature levels (100, 150, and 200°C) for seven exposure timings (0, 5, 10, 20, 40, 80, and 160 s). Exposure to 150 and 200°C for 5 to 20 s reduced divine nightshade emergence 6 to 29%. Divine nightshade emergence was not completely inhibited at 200°C for 160 s. However, itchgrass exposed to 150°C for 40 s or longer or to 200°C for 20 s or longer failed to emerge. Results from this study showed itchgrass seed could be controlled with dry heat, but prescribed burns that produced temperatures below 100°C or temperatures greater than 150°C for short durations may not control all divine nightshade seeds. The aforementioned temperature and exposure duration that allowed divine nightshade to survive introduced the potential for divine nightshade to become more abundant. Core Ideas Itchgrass seed exposed to 150°C dry heat for 40 s or more did not emerge. Divine nightshade seed was more tolerant to 150 and 200°C than itchgrass. Dry heat was an effective control strategy for surface deposited weed seeds.

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“…Sulfentrazone persistence in the soil is long and proportional to the applied dose (Blanco et al, 2010). However, sulfentrazone is more available in sandy soils than in clayey textured soils due to the binding of herbicide molecules to the negative charges of soil colloids (Carbonari et al, 2016). Sulfentrazone persistence at a dose of 600 g ha -1 was estimated to be 376 days in a clayey Oxisol (Blanco and Velini, 2005).…”

Section: Introductionmentioning

confidence: 99%

Residual Activity of Sulfentrazone Applied to Soybean on Cotton Crop in Succession

et al. 2019

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Weed resistance to glyphosate in agricultural production systems has led to the need of applying herbicides with different mechanisms of action. However, the persistence of these herbicides in the soil can harm the subsequent crop. This study aimed to assess the effect of the residual activity of the herbicide sulfentrazone applied in pre-emergence of soybean on cotton in succession. The experimental design was a randomized block design with five replications, with seven doses of sulfentrazone (0, 37.5, 75, 150, 300, 600, and 1,200 g ha -1 ). Cotton was sown at 112 days after herbicide application (DAA), with an accumulated precipitation of 637 mm during soybean cycle. Variables related to photosynthetic characteristics, phytointoxication, establishment, development, production components, and yield were assessed in both crops. The residual activity of sulfentrazone did not significantly interfere with the assessed variables in soybean but caused significant losses to cotton, which the recommended dosage (600 g ha -1 ) of the herbicide reduced cotton yield by 30%.

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Dynamics of Sulfentrazone Applied to Sugarcane Crop Residues

Cited by 42 publications

References 20 publications

The influence of winter annual grass litter on herbicide availability

The influence of winter annual grass litter on herbicide availability

Dry Heat and Exposure Time Influence Divine Nightshade and Itchgrass Seed Emergence

Residual Activity of Sulfentrazone Applied to Soybean on Cotton Crop in Succession

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