Selective Weed Control with EPTC-Treated Seed of Alfalfa (<i>Medicago sativa</i>)

Dawson, J. H.

doi:10.1017/s0043174500025935

Cited by 9 publications

(4 citation statements)

References 4 publications

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“…The consistent control of grass seedlings in bands 2 to 4 em wide when EPTC -treated alfalfa seed was seeded in rows (3) indicates that EPTC consistently moved away from the treated seed rapidly. EPTC controls barnyardgrass by entering the emerging shoot (1).…”

Section: Discussionmentioning

confidence: 95%

“…Recently, Dawson (2,3) demonstrated that alfalfa tolerates exposure to extremely high concentrations of EPTC applied close to the sown seed or directly to the seed before sowing. Although such applications initially expose alfalfa to rates of EPTC as great as 250 times normal, the seedlings were not injured appreciably more than from conventional applications.…”

Section: Introductionmentioning

confidence: 99%

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Tolerance of Alfalfa (Medicago sativa) to EPTC

Dawson¹

1983

Weed sci.

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EPTC (S-ethyl dipropylthiocarbamate) did not reduce emergence of alfalfa (Medicago sativaL. ‘Vernal’) seedlings at 3 to 81 kg/ha in the greenhouse nor at 3 to 243 kg/ha in the field. No rate injured roots, but temporary foliar symptoms were present at all rates. Soaking seeds for 40 days in technical grade EPTC or for 8 days in water saturated with EPTC before seeding in untreated soil did not reduce emergence or injure the seedlings. Seedlings from seeds germinated in paper towels moistened with water saturated with EPTC grew normally when transferred to untreated soil. Alfalfa was injured if seedlings were exposed to EPTC after emergence, but it tolerated exposure to high concentrations during imbibition and germination of the seeds and elongation of the seedlings before they emerged from the soil. EPTC delayed seedling emergence by about 1 day. This effect was separate from that causing typical foliar symptoms.

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Tolerance of Alfalfa (Medicago sativa) to EPTC

Dawson¹

1983

Weed sci.

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“…Commercial seed treatments with fungicides or insecticides are commonly used in modern agriculture. In contrast, several cases of the use of herbicide-treated seeds have been reported only for control of alfalfa (Medicago sativa L.) (Dawson 1981(Dawson , 1987, grass weeds (Dale 1983), and witchweed (Striga spp.) in cowpea (Vigna unguiculata L.) (Berner et al 1994(Berner et al , 1997 or maize (Zea mays L.) (Kanampiu et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Pronamide Applied to Sunflower Seeds for Orobanche cumana Control¹

Diaz-sanchez¹,

Jurado-Expósito²,

López‐Granados³

et al. 2003

Weed Technology

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Field and laboratory studies were conducted from 1993 to 1997 to determine the feasibility of controlling nodding broomrape in sunflower by treating crop seeds with pronamide. Soaking sunflower seeds for 5 min in 50% pronamide solution or coating at the equivalent of 2 kg/ha with pronamide did not impair seed germination or seedling growth, and controlled nodding broomrape 49 to 68% and 51 to 77%, respectively, up to 105 d after planting. Studies of the effect of treated sunflower seeds on germination and seedling growth, at several time intervals after the herbicide application (0, 30, 60, and 90 d after treatment [DAT]), were conducted. Soaking with 50% solution or coating at 2 kg/ha reduced seedling growth by 20 and 24% 60 DAT, respectively, compared with the control.

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“…Thiocarbamate herbicides, first synthesized in 1954, have been utilized to control perennial grasses, including bermudagrass, in a variety of agronomic crops (Csinos et al 2000;Dawson 1981;Grey 1975;Harvey et al 1987). These herbicides are highly volatile, which necessitates their incorporation immediately after application (Ashton and Crafts 1981).…”

mentioning

confidence: 99%

Conversion of ‘Tifway’ Bermudagrass Stands to ‘Zorro’ Zoysiagrass Turf using Combinations of Dazomet and EPTC

et al. 2011

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Field experiments were conducted to evaluate the efficacy of herbicides and soil sterilants for the fairway conversion of ‘Tifway’ bermudagrass to ‘Zorro’ zoysiagrass. Treatments included glyphosate (4.48 kg ae ha−1), EPTC (7.84 kg ai ha−1), dazomet (338 kg ai ha−1), siduron (13.4 kg ai ha−1), glyphosate plus ETPC (4.48 + 7.84 kg ha−1), glyphosate plus dazomet (4.48 + 338 kg ha−1), EPTC plus siduron (7.84 + 13.4 kg ha−1), and dazomet plus siduron (338 + 13.4 kg ha−1). Glyphosate treatments were applied 5 wk prior to establishment (WPE), dazomet and EPTC treatments were applied 3 WPE, and siduron was applied at establishment. Dazomet and EPTC treatments were incorporated to a depth of 10 to 15 cm with a rotary tiller and rolled with a weighted roller to reduce losses from volatilization after application. Zorro zoysiagrass was established in June 2008 and 2009 using a mixture of rhizomes and stolons at a rate of 76 cm3m−2. Results indicate that glyphosate + dazomet, glyphosate + EPTC, dazomet + siduron, and EPTC + siduron were equally effective at controlling Tifway bermudagrass. EPTC and dazomet controlled bermudagrass more effectively when used in combination with glyphosate or siduron. There were no significant differences in bermudagrass cover between the EPTC combinations with glyphosate or siduron and dazomet applied with glyphosate or siduron. Comparing EPTC- and dazomet-alone, EPTC yielded less bermudagrass cover (32%) than dazomet (71%). At present, research is limited on using EPTC for controlling perennial grasses in turfgrass systems. Data from these studies demonstrate the potential use of EPTC as a preplant soil herbicide to control hybrid bermudagrass during zoysiagrass renovation.

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Selective Weed Control with EPTC-Treated Seed of Alfalfa (Medicago sativa)

Cited by 9 publications

References 4 publications

Tolerance of Alfalfa (Medicago sativa) to EPTC

Tolerance of Alfalfa (Medicago sativa) to EPTC

Pronamide Applied to Sunflower Seeds for Orobanche cumana Control¹

Conversion of ‘Tifway’ Bermudagrass Stands to ‘Zorro’ Zoysiagrass Turf using Combinations of Dazomet and EPTC

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Selective Weed Control with EPTC-Treated Seed of Alfalfa (Medicago sativa)

Cited by 9 publications

References 4 publications

Tolerance of Alfalfa (Medicago sativa) to EPTC

Tolerance of Alfalfa (Medicago sativa) to EPTC

Pronamide Applied to Sunflower Seeds for Orobanche cumana Control1

Conversion of ‘Tifway’ Bermudagrass Stands to ‘Zorro’ Zoysiagrass Turf using Combinations of Dazomet and EPTC

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Product

Resources

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Pronamide Applied to Sunflower Seeds for Orobanche cumana Control¹