Aminopyralid soil residues affect rotational vegetable crops in Florida

Fast, Brandon J.; Ferrell, Jason A.; MacDonald, Gregory E.; Sellers, Brent A.; Macrae, Andrew; Krutz, L. Jason; Kline, William N.

doi:10.1002/ps.2119

Cited by 12 publications

(8 citation statements)

References 13 publications

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“…Since increasing the aminopyralid rate may also provide residual control of other weed species (Ferrell, Mullahey, Langeland, & Kline, 2006; Renz, 2010), it may be appropriate to apply higher rates of aminopyralid. However, aminopyralid use may need to be avoided where pastures are rotated into vegetable or other sensitive crops, as it has been shown to cause injury (Fast et al., 2011). Therefore, applications of dicamba + 2,4‐D would provide producers with an option for Nuttall's thistle control in the year prior to planting sensitive crops such as tomato ( Solanum lycopersicum L.).…”

Section: Discussionmentioning

confidence: 99%

Control of Nuttall's thistle in perennial grass pastures

Dias

Sellers

2020

Crop Forage & Turfgrass Mgmt

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Nuttall's thistle (Cirsium nuttalli DC) is a biennial species that deters grazing during dry seasons in Florida when forage is limited. Although management of other thistle species has been extensively studied, information on Nuttall's thistle control is limited. Field studies were conducted to compare the effectiveness of aminopyralid, dicamba, and 2,4‐D for Nuttall's thistle control applied at two different timings (rosette vs. bolting). A second experiment was conducted to determine the most effective aminopyralid rate through field dose–response studies. Although control of bolting plants was initially greater than control of rosette thistle at 15 d after treatment (DAT), no differences were detected between growth stages at 30 and 60 DAT. Excellent control (>90%) was achieved at 60 DAT with both rates of dicamba + 2,4‐D [4.0 + 11.4 and 6.0 + 17.2 oz acid equivalent (ae) acre−1] and aminopyralid at 0.77 oz acre−1, whereas aminopyralid at 0.26 oz ae acre−1 and both rates of 2,4‐D (7.0 and 14.0 oz ae acre−1) provided 82, 80, and 78% control, respectively. The dose–response field experiment indicated that the aminopyralid effective dose required for 90% control (ED90) was 0.34 and 0.94 oz ae acre−1 for rosette and bolting thistle at 30 DAT, respectively. No difference between timings was detected at 60 DAT and the aminopyralid ED90 value was 0.27 oz acre−1. These data indicate that dicamba + 2,4‐D (6.0 + 17.2 oz ae acre−1) effectively controlled Nuttall's thistle; similar performance can be obtained with low aminopyralid rates (0.27 oz ae acre−1).

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Section: Discussionmentioning

confidence: 99%

Control of Nuttall's thistle in perennial grass pastures

Dias

Sellers

2020

Crop Forage & Turfgrass Mgmt

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“…Aminopyralid (AM) purity 96% (Shanghai Tianfu Chemical Ltd, Hong Kong, China) and herbicide Mustang Forte (MF) (Dow Chemical Company, Midland, USA), active substances 2,4-D (180 g/L), AM (10 g/L), and florasulam (5 g/L), was applied at corresponding doses: C1 = 3.75, C2 = 7.5 and C3 = 15 g/ ha of AM. We relied primarily on similar studies (Fast et al, 2011;Soukupova and Koudela, 2023).…”

Section: Methodsmentioning

confidence: 99%

“…However, if the origin of the straw used is unknown, it may contain residues of various herbicides used in grain cultivation, which can hinder the growth of strawberry plants. These residues are released from straw used as mulch by rain and can harm sensitive plants, even in very small amounts (Fast et al, 2011;Soukupova and Koudela, 2023).…”

Section: Introductionmentioning

confidence: 99%

“…These modern herbicides are used to control broadleaf weeds in crops and grassland. The disadvantage of these non-toxic substances for animals and humans (Commission, 2013;EFSA, 2013) is that they decompose slowly in the soil (Gilbert et al, 2010) and their residues attach to the plant tissues of the treated crops (Ferrell et al, 2020) having a problematic effect when subsequently growing sensitive crops, especially from the Fabaceae and Solanaceae families (Fast, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Effects of Two Herbicides on Strawberry Plants

Soukupová,

Koudela

2024

Acta Univ. Agric. Silvic. Mendelianae Brun.

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Herbicide substances aminopyralid and pyroxsulam are used to control broadleaf weeds in cereals. Disadvantage of this herbicides is fact, that their residues remain not only in the soil, but are also translocated to the plant tissues of the treated crops. Herbicide residues released from straw used like mulch by the way of decomposition and leaching can damage strawberry. In this study the response of strawberry plants to aminopyralid at doses of 3.75, 7.5 and 15 g/ha and pyroxsulam at dose 3, 15 and 30 g/ha was evaluated. With the increased concentration of both herbicides, plants injury also increased. A reduction in fruit yield was noted with both herbicides and cultivar 'Elsanta' was more sensitive than cultivar 'Karmen'. Mustang Forte herbicide at the highest rate reduced the yield of the 'Elsanta' cultivar by 52% and the 'Karmen' cultivar by 47% in the first year. However, in the second year, the decrease in yields of both varieties leveled off at 30% compared to the control. Similarly, in the case of pyroxsulam, the yield of cultivar 'Elsanta' decreased by 70% in the first year, while yield of cultivar 'Karmen' only decreased by 55%, but here the difference between cultivars remained until the second year.

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“…Aminopyralid is an herbicide labeled for POST control of western ragweed in pasture and rangeland (Anonymous 2013) and is known to have soil activity on some plants for at least 215 d after treatment (DAT;Fast et al 2011;Ferrell et al 2006;Mikkelson and Lym 2011;Rhodes and Phillips 2011). It has been successfully used as a PRE treatment for medusahead [Taeniatherum caput-medusae (L.) Nevski], a problematic, invasive grass (Kyser et al 2012).…”

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confidence: 99%

Evaluation of Aminopyralid Applied PRE to Control Western Ragweed (Ambrosia psilostachya) in Oklahoma Pastureland

2014

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Western ragweed is problematic in Oklahoma pasture and rangeland. There are no labeled PRE herbicides for western ragweed control in pastures to allow ranchers the flexibility of extending the spray season or the ability to spray before emergence of sensitive crops in bordering fields. Field studies were conducted in four locations during a 2-yr period to determine the effects of applying aminopyralid PRE for control of western ragweed. Good to excellent control of western ragweed was obtained when aminopyralid rates of 89 g ae ha−1 or greater were applied PRE. Control was season long and equal to that obtained with a formulated mixture of 2,4-D and aminopyralid applied POST at a rate of 457 + 57 g ae ha−1. Sward height at time of PRE application had little to no effect on the efficacy of the treatment, but time after application before a significant rainfall event did influence the aminopyralid rate needed to achieve acceptable PRE control.

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Aminopyralid soil residues affect rotational vegetable crops in Florida

Cited by 12 publications

References 13 publications

Control of Nuttall's thistle in perennial grass pastures

Control of Nuttall's thistle in perennial grass pastures

Effects of Two Herbicides on Strawberry Plants

Evaluation of Aminopyralid Applied PRE to Control Western Ragweed (Ambrosia psilostachya) in Oklahoma Pastureland

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