Common Buckwheat (<i>Fagopyrum esculentum</i>) Tolerance to Herbicides

Friesen, G. H.; Campbell, C. G.

doi:10.1017/s004317450006714x

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…Compared with the other four tested weeds, shepherd's-purse and flixweed were more sensitive to fluorochloridone in both PRE and POST application (Figure 1). Similar results have been reported that fluorochloridone provided high efficacy against cruciferous weeds (Friesen 1987;Friesen and Clayton 1986). Wild oat was more tolerant than any other weed in our experiment (Table 3).…”

Section: Resultssupporting

confidence: 91%

Evaluation of Weed Efficacy and Crop Safety of Fluorochloridone in China

Cong

Wang

et al. 2014

Weed technol.

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Dinitroaniline and amide herbicides have been continually applied in garlic in China, leading to the change of weed community and dominant weed species. Catchweed bedstraw, shepherd's-purse, and flixweed have become major troublesome weeds. Crop safety of fluorochloridone to 18 crops (at rates of 500 and 1,000 g ai ha−1) and weed efficacy against 35 weeds (at rates of 125 and 250 g ha−1) were determined in greenhouse studies. Visual estimate indicated that fluorochloridone was not safe to many crops, especially cruciferous crops. Among all of the trial crops, garlic was the only crop which was not injured in both PRE and POST application at rate of 500 g ha−1, even when treated with 1,000 g ha−1. Fluorochloridone showed high efficacy against most weeds tested in this experiment when applied PRE, but could not offer a satisfactory control when applied POST. Further rate-response study of fluorochloridone to garlic and six weeds was also investigated. PRE application of fluorochloridone to garlic was safer than POST, and the rates for 10% growth reductions (GR10s) were 1,959 g ha−1for PRE and 537 g ha−1for POST. When applied PRE, GR90s of shepherd's-purse and flixweed were 19.2 and 70.3 g ha−1, respectively. Though GR90of catchweed bedstraw was 541 g ha−1, it could be totally controlled without injuring garlic. On the basis of these results, fluorochloridone has an excellent prospect for weed control in garlic fields.

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Section: Resultssupporting

confidence: 91%

Evaluation of Weed Efficacy and Crop Safety of Fluorochloridone in China

Cong

Wang

et al. 2014

Weed technol.

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Wild Mustard,Sinapis arvensis, Control in Common Buckwheat,Fagopyrum esculentum, with Desmedipham and Fluorochloridone

Friesen¹

1988

Weed technol.

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Desmedipham applied at 0.5 kg ai/ha at the 4-leaf stage of common buckwheat controlled wild mustard over 90%. Desmedipham at 1.0 kg/ha at the 2- and 6-leaf stages also controlled wild mustard approximately 90%, at least in 1985, but significantly injured the crop. Fluorochloridone controlled wild mustard over 90% when applied preplant incorporated at 1.0 kg ai/ha or preemergence at 0.28 to 0.56 kg/ha. Fluorochloridone applied postemergence at 0.10 to 0.20 kg/ha also controlled wild mustard over 90% but injured common buckwheat by 41 to 57%.

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Doublecropping Seed and Forage Crops with Small Grains in the Upper Midwest

Moomaw¹,

Mader

1991

Journal of Production Agriculture

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Sequential doublecropping is a standard agronomic practice in the Southeast and Southern Plains of the USA. Soybean [Glycine max (L.) M err.] and grain sorghum [Sorghum bicolor (L.)] are the seed crops most frequently doublecropped following small grain. Yields have been variable in the Upper Midwest, even when the small grain is removed for forage rather than harvested for grain. This irrigated experiment was conducted in northeast Nebraska at 42° N and 97° W to evaluate doublecropping of several early maturing seed crops and summer annual forages after removal of barley (Hordeum vulgare L. ‘Hazen’) forage (first date) or winter wheat (Triticum aestivum L. ‘Cody’) for grain (second date). The seed crops used were buckwheat (Fagopyrum esculentum Moench ‘Mancan’), dwarf corn (Zea mays L. ‘Cargill 1077’), ‘DK‐18’ grain sorghum, proso millet [Panicum miliaceum (L.) ‘Rise’], ‘Elgin’ soybean, sunflower (Helianthus annus L. ‘Sunwheat 101’), and rapeseed (Brassica campestris L. ‘Tobin’). Forage crops evaluated were foxtail millet [Setaria italica (L.) Beauv. ‘Snofox’], pearl millet, [Pennisetum americanum (L.) ‘NK Millex 24’], ‘Cargill Morcane’ forage sorghum, ‘Cargill Sweet Sioux V’ sorgho‐sudangrass, and turnip (Brassica rapa L. ‘Purpletop Globe’). With 23 June the first date of planting, dwarf corn, grain sorghum, and soybean yielded 179, 446, and 188% more grain, respectively, than with the later 7 July average planting date. Rapeseed produced low seed yield with either planting date. Buckwheat yield with the first date was 57% of the late date yield, due to herbicide injury. Pest control problems limited firm conclusions about the suitability of sunflower and proso millet for doublecropping. None of the grain doublecrops showed more promise than soybean or grain sorghum. Among forage crops, pearl millet, forage sorghum, and sorghum sudangrass forage yields were 115, 102, and 117% respectively, with the early vs. late planting dates. Forage sorghum produced the highest forage, digestible dry matter, and protein yields. First date of planting yields of foxtail millet and turnip were 91 and 76% compared with later planting; herbicide injury reduced first planting date turnip root yield 1 yr.

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Common Buckwheat (Fagopyrum esculentum) Tolerance to Herbicides

Cited by 4 publications

References 6 publications

Evaluation of Weed Efficacy and Crop Safety of Fluorochloridone in China

Evaluation of Weed Efficacy and Crop Safety of Fluorochloridone in China

Wild Mustard,Sinapis arvensis, Control in Common Buckwheat,Fagopyrum esculentum, with Desmedipham and Fluorochloridone

Doublecropping Seed and Forage Crops with Small Grains in the Upper Midwest

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