Broadleaf Weed Control with Clomazone in Pickling Cucumber (<i>Cucumis sativus</i>)

Al‐Khatib, Kassim; Kadir, Sorkel; Libbey, Carl

doi:10.1017/s0890037x00023125

Cited by 16 publications

(15 citation statements)

References 7 publications

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“…), common lambsquarters, common ragweed, and common purslane (Portulaca oleracea L.) (Brown and Masiunas 2002;Jordan et al 1994;Scott et al 1995), but is ineffective on yellow nutsedge (Cyperus esculentus L.), smooth pigweed, or nightshades (Solanum spp.) (Al-Khatib et al 1995;Nurse et al 2006;Trader et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Weed control and crop tolerance with S-metolachlor in seeded summer squash and cucumber

2020

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Abstract Residual herbicides remain the primary tool for efficient weed control in cucurbit crops because of the lack of crop tolerance to many POST herbicide options. Field experiments were conducted in New Jersey in 2018 and 2019 to determine weed control efficacy and tolerance of direct-seeded cucumber ‘Python‘ and summer squash ’Gold Prize‘ to S-metolachlor applied at 0.7 or 1.4 kg ai ha-1 at planting (PRE) or when crops reached the 2nd to 3rd leaf stage (EPOST). Regardless of applied rate, S-metolachlor PRE or EPOST provided 96 to 100% control 3 wk after planting (WAP) of smooth pigweed, large crabgrass, and giant foxtail. S-metolachlor PRE significantly improved American black nightshade and carpetweed control 3 WAP with respect to bensulide, and smooth pigweed with respect to clomazone + ethalfluralin. Summer squash showed excellent tolerance, regardless of S-metolachlor rate or timing of application, with stunting not exceeding 17% 4 WAP and 3% 7 WAP at the 1.4 kg ha-1 rate. Marketable yield decreased by 15% with S-metolachlor PRE or POST at 1.4 kg ha-1 with respect to clomazone + ethalfluralin, a reduction not noted when comparing to bensulide or the handweeded control. Marketable fruit number per plant and individual fruit weight were not affected by Smetolachlor applications. Conversely, cucumber was more sensitive to S-metolachlor than summer squash with 30% seedling emergence reduction and 36 to 43% stunting 4 WAP when S-metolachlor was applied PRE at 1.4 kg ha-1. EPOST application resulted in 15 to 26% cucumber injury 1 wk after treatment (WAT). Marketable yield declined by 21 and 39% with the 0.7 and 1.4 kg ha-1 rates of S-metolachlor, respectively, compared to clomazone + ethalfluralin. Therefore, S-metolachlor may be a novel alternative to already labeled residual herbicides for summer squash but would cause unacceptable injury and yield reduction for supporting its registration on cucumber.

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Section: Introductionmentioning

confidence: 99%

Weed control and crop tolerance with S-metolachlor in seeded summer squash and cucumber

2020

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“…In a greenhouse evaluation of selected accessions, the differences in tolerance were not as great as in the field screening experiment. Al-Khatib et al (1995) demonstrated differences in clomazone tolerance among five cucumber cultivars in greenhouse and field experiments. The greatest differences in tolerance were observed with injury ratings taken at 4 weeks after planting in the field and with leaf area and plant dry weights in the greenhouse.…”

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confidence: 95%

Identification of Citrullus lanatus Germplasm Accessions Tolerant to Clomazone Herbicide

Harrison¹,

Kousik²,

Levi³

2011

horts

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Clomazone herbicide is registered for use in watermelon; however, crop tolerance is marginal, and the recommended use rates (0.17 to 0.28 kg a.i./ha) are lower for watermelon than for other crops. In a greenhouse germplasm evaluation experiment including 56 germplasm accessions and watermelon cultivars, three Citrullus lanatus var. citroides PI accessions (PI 482324, PI 5003540, and PI 532624) were not injured by clomazone, whereas most of the other accessions and cultivars were moderately or severely injured. A greenhouse concentration response experiment demonstrated that the clomazone concentration required to cause moderate injury to the tolerant ‘PI 500354’ was approximately three times the concentration required to cause similar injury to the susceptible citroides accession ‘PI 244017’, and the concentration required to cause 50% shoot biomass reduction was approximately five times greater for ‘PI 500354’ than for ‘Charleston Gray’ watermelon. Subsequent field experiments demonstrated that two tolerant accessions (‘PI 500354’ and ‘PI 482324’) were injured less initially by clomazone and recovered more rapidly from clomazone injury than two susceptible accessions (‘PI 244017’ and ‘PI 271773’) and two watermelon cultivars (‘Charleston Gray’ and ‘Crimson Sweet’). Tolerant germplasm accessions like ‘PI 482324’ and ‘PI 500354’ may be useful as sources of clomazone tolerance in watermelon breeding. Chemical name used: clomazone {2-[(2-chlorophenyl)methyl]-4,4-dimethyl-3-isoxazolidinone}.

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“…Studies have been conducted on reduced doses and spray volumes (e.g., Schumacher and Hatterman-Valenti 2007), but not at the microscale. Dose-response relationships have been used most often for herbicide efficacy (e.g., Al-Khatib et al 1995) and more recently for detecting herbicide-resistant weeds (e.g., Riar et al 2011) and other less common weed control tools, such as flaming (Sivesind et al 2009), clove oil (Boyd and Brennan 2006), and mustard seed meal (Boydston et al 2011). More research is needed to evaluate the response of individual weed species to micro-rates and the efficacy of the equipment used for making targeted applications.…”

Section: Introductionmentioning

confidence: 99%

Targeted and Microdose Chemical Applications

Young

Giles

2013

Automation: The Future of Weed Control in Cropping Systems

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In cropping systems, the precise application of herbicides is important for efficacious weed control. By using plant recognition and precision application technology targeting individual plants, off-target movement can be eliminated and herbicide rates significantly reduced without sacrificing yields. Highly targeted applications of nonselective herbicides into a growing sensitive crop are novel operations, nonexistent before the development of plant-specific targeting. New application technologies are essential when spatial rather than chemical selectively is to be deployed. In many potential applications, the chemical delivery system becomes the spatial resolution and speed limiting factor in the system.

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Broadleaf Weed Control with Clomazone in Pickling Cucumber (Cucumis sativus)

Cited by 16 publications

References 7 publications

Weed control and crop tolerance with S-metolachlor in seeded summer squash and cucumber

Weed control and crop tolerance with S-metolachlor in seeded summer squash and cucumber

Identification of Citrullus lanatus Germplasm Accessions Tolerant to Clomazone Herbicide

Targeted and Microdose Chemical Applications

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