Influence of Application Rate and Timing of Diclosulam on Weed Control in Peanut (<i>Arachis hypogaea</i> L.)

Grey, Timothy L.; Bridges, David C.; Eastin, E. F.

doi:10.3146/i0095-3679-28-1-4

Cited by 19 publications

(37 citation statements)

References 5 publications

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“…There are several effective herbicide systems to control yellownutsedge in peanut (Hauseretal., 1966;Gricharetal., 1992Gricharetal., , 2000Gricharetal., , 2001Richburg et al, 1993Richburg et al, , 1994Grichar and Nester, 1997;Grey et al, 2001). These options include alachlor [2-chloro-N-(2,6-diethylphenyl…”

mentioning

confidence: 99%

Yellow Nutsedge (Cyperus esculentus) Interface in Peanut (Arachis hypogaea)

Johnson¹,

Mullinix

2003

Peanut Science

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Studies were conducted from 1997 to 1999 at the Coastal Plain Experiment Station in Tifton, GAto measure the full-season interference of yellow nutsedge in peanut using a response prediction experiment with a natural infestation of yellownutsedge. Seeds of cultivar GeorgiaGreen were planted in Mayeach year, and plots were established immediately after crop emergence. Plots were 1.8 m by 1.8 m. with sixreplications. Yellow nutsedge plantswere counted 28d after crop emergence in each plot, and six weed-free plots were randomly established. Parameters measured were peanut yield and yellow nutsedge tuber contamination in harvested peanut. Yellow nutsedge densities ranged from 0 to 169 plants/m'', Regression analysis indicated a 25% reduction in peanut yieldwith a yellownutsedge infestation of approximately68plants/m". Each yellownutsedgeplant! m 2 reduced peanut yield by 13 kglha. There was a positive linear response between yellownutsedge densityand number of tubers contaminating harvested peanut. Tuber contamination increased by 5190 tuberslha for every yellow nutsedge plant/m". The results indicated that yellow nutsedge is a poor competitor with peanut. However, tuber contamination in harvested peanuts should be considered when using these results in developing treatment thresholds.

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mentioning

confidence: 99%

Yellow Nutsedge (Cyperus esculentus) Interface in Peanut (Arachis hypogaea)

Johnson¹,

Mullinix

2003

Peanut Science

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“…These data indicate the extreme sensitivity of bristly starbur to diclosulam as compared to other weeds that require the full use rate for peanut weed control including Benghal dayflower (Sabila et al, 2012), smallflower morningglory [Jacquemontia tamifolia (L.) Griseb. ], common cocklebur (Xanthium strumarium L.), prickly sida (Sida spinosa L.) and common ragweed (Everman et al, 2006;Grey et al, 2001). Tolerant crop and weed species have limited translocation and rapid metabolism of diclosulam (Senseman, 2007;Hodges et al, 1990), which is similar to other sulfonamide herbicides (Frear et al, 1993).…”

Section: Resultsmentioning

confidence: 94%

“…Early research indicated that diclosulam provided effective weed control of dicot and nutsedge (Cyperus sp.) weed species in peanut when applied preplant incorporated (PPI), PRE, AE, or POST applications (Grey et al 2001;Prostko et al, 1999;Bailey et al, 1998;Grichar et al, 1998;Prostko et al, 1998).…”

mentioning

confidence: 99%

Uptake, Translocation, and Dose Response of Postemergence Applied Diclosulam to Bristly Starbur (Acanthospermum hispidum)

Grey

Prostko²

2015

Peanut Science

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Laboratory and greenhouse studies were conducted to determine the absorption, translocation, dose response, efficacy, and effects on biomass of the herbicide diclosulam on bristly starbur (Acanthospermum hispidum DC.) In laboratory experiments, 14 C-diclosulam absorption and translocation was evaluated in bristly starbur. Greenhouse studies determined bristly starbur growth response to postemergence applied diclosulam at 0, 0.2, 0.4, 0.8, 1.6, 3.3, and 6.5 g ai/ha. Bristly starbur seed were collected from two Georgia locations, hand cleaned, and grown in the greenhouse. Bristly starbur plants were then foliar treated with diclosulam when plants were in the 4 to 6 leaf stage of growth. 14 C-diclosulam was applied to a single non-treated, most fully developed bristly starbur adaxial leaf, after the rest of the plant was foliar treated with 0.8 g ai/ha of diclosulam. At 24 and 48 hours after treatment, 14 C-diclosulam was translocated acropetally in bristly starbur to the plant apex, with little to no movement to the lower plant parts including lower leaves, stem and roots. For the dose response studies, bristly starbur growth reduction dry weight (GR 50 ) and efficacy (I 50 ) for diclosulam ranged from 0.95 to 0.92 g ai/ha, respectively. Based on these data, bristly starbur susceptibility to diclosulam was due to its translocation to apical growing points within 24 to 48 hours where acetoacetate synthase (ALS) inhibition occurred resulting in eventual plant death. While bristly starbur is controlled with diclosulam rates below the standard use rate of other weeds, the standard field rates in combination with other herbicide mechanisms of action will continue to be recommended to peanut growers to reduce the potential for bristly starbur ALS resistance selection.

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“…Diclosulam provides effective control of numerous weed species, including several annual morningglories ( Ipomoea spp. ), eclipta [ Eclipta prostrata (L.) L.], bristly starbur ( Acanthospermum hispidum DC), and common ragweed ( Ambrosia artemisiifolia L.) (Grey et al, 2001, 2003; Price and Wilcut, 2002). Annual applications of diclosulam have been estimated to cover 25 to 30% of the peanut production area in the Southeast (J. Richburg, personal communication, 2014).…”

Section: Diclosulammentioning

confidence: 99%

Field Corn Response to Diclosulam

Prostko¹,

Webster

2015

Crop Forage & Turfgrass Mgmt

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Crop rotation restrictions often limit the use of diclosulam in peanut (Arachis hypogaea L.). Research was conducted in 2013 and 2014 in Georgia to determine the response of field corn (Zea mays L.) to preemergence (PRE) applications of diclosulam with the intent of simulating carryover from applications made to a previous peanut crop. Diclosulam was applied at 0, 0.0008, 0.0015, 0.003, 0.006, 0.012, 0.024, and 0.047 lb a.i./acre. The normal use rate of diclosulam is 0.024 lb a.i./acre. Corn injury, stand loss, and yield loss increased with diclosulam rate. Diclosulam at 0.0008 lb a.i./acre caused <10% corn injury and <2% plant stand or yield loss. These results suggest that field corn could be safely planted after a field dissipation rate of five half‐lives. The reported half‐life of diclosulam is 13 to 43 days. Thus, it is likely that the field corn rotation restriction could be reduced in the Southeast where corn is grown in warm climates on coarse‐textured soils using supplemental irrigation, which help contribute to optimum microbial degradation of herbicides.

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Influence of Application Rate and Timing of Diclosulam on Weed Control in Peanut (Arachis hypogaea L.)

Cited by 19 publications

References 5 publications

Yellow Nutsedge (Cyperus esculentus) Interface in Peanut (Arachis hypogaea)

Yellow Nutsedge (Cyperus esculentus) Interface in Peanut (Arachis hypogaea)

Uptake, Translocation, and Dose Response of Postemergence Applied Diclosulam to Bristly Starbur (Acanthospermum hispidum)

Field Corn Response to Diclosulam

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