Greenhouse Assessment of Differences in Clomazone Tolerance among Sweetpotato Cultivars

Harrison, Howard F.; Jackson, D. Michael

doi:10.1614/wt-d-10-00132.1

Cited by 12 publications

(11 citation statements)

References 10 publications

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“…Because relatively few herbicides are registered for sweetpotato, chemical weed management is challenging (Harrison and Jackson, 2011b). Flumioxazin, S-metolachlor, and clomazone are PRE herbicides registered for application on sweetpotato that control troublesome weeds, such as Amaranthus palmeri and annual grasses (Kemble, 2017;Meyers et al, 2010).…”

mentioning

confidence: 99%

In Vitro Safening of Bentazon by Melatonin in Sweetpotato (Ipomoea batatas)

Caputo¹,

Wadl²,

McCarty³

et al. 2020

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Weed competition is a main factor limiting sweetpotato [Ipomoea batatas (L.) Lam] production. Yellow nutsedge (Cyperus esculentus L.) is a problematic weed to control due to its ability to quickly infest a field and generate high numbers of tubes and shoots. Compounding this is the lack of a registered herbicide for selective postemergence control of yellow nutsedge. Research was conducted to evaluate the bentazon dose response of two sweetpotato cultivars and one advanced clone and to evaluate the plant hormone melatonin to determine its ability to safen bentazon post emergence. Bioassays using Murashige and Skoog (MS) media supplemented with melatonin (0.232 g a.i./L and 0.023 g a.i./L) and bentazon (0.24 g a.i./L) were conducted to evaluate the effect of bentazon on sweetpotato and to determine the interactive response of the Beauregard cultivar to bentazon and exogenous applications of melatonin. Beauregard swas the most tolerant cultivar and required dosages of bentazon that were two-times higher to cause the same injury compared with other cultivars. MS media containing melatonin and bentazon showed fewer injuries and higher plant mass than plants treated with bentazon alone. These results indicate that sweetpotato injury caused by bentazon may be reduced by melatonin.

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mentioning

confidence: 99%

In Vitro Safening of Bentazon by Melatonin in Sweetpotato (Ipomoea batatas)

Caputo¹,

Wadl²,

McCarty³

et al. 2020

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“…Four PI accessions were determined to be duplicates; they were ‘Tainung 57’ (PI 531147 and PI 573295), ‘Wagabolige’ (PI 595888 and PI 633966), IITA TIS 9101 (PI 599385 and PI 606278) and ‘Helena’ (PI 606268 and PI 612696), with the first listed PI being used in this study. The leaves of NG7570 (PI 564142) showed severe bleaching symptoms throughout the season that apparently were due to clomazone injury (Harrison and Jackson, 2011), so data from that accession were not used. Although some clomazone injury was apparent in several other PIs soon after transplantation (online Supplementary Table S1) (Jackson et al ., 2018b), these symptoms were absent by the time the leaf samples were taken for colour analyses.…”

Section: Resultsmentioning

confidence: 99%

Phenotypic analysis of leaf colours from the USDA, ARS sweetpotato (Ipomoea batatas) germplasm collection

Jackson

Harrison

Jarret

et al. 2019

Plant Genet. Resour.

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Leaf colour characteristics of 730 sweetpotato, Ipomoea batatas (L.) Lam. (Convolvulaceae), plant introduction (PI) accessions from the USDA sweetpotato germplasm collection were evaluated during 2012–2014. Colorimetry data for the abaxial and adaxial leaf surfaces were recorded using a tristimulus colorimeter and the CIE 1976 L*a*b* and CIE L*C*h* colour spaces. Most accessions (725 of 730 PIs) had dark-to-medium green leaves, but two PIs had totally purple leaves, and three PIs had yellow or yellow-green (chartreuse) leaves. For mature, field-grown green leaves, values for the red-green coordinate (a*) averaged −12.4 for the adaxial and −10.4 for the abaxial leaf surface. Values for the blue-yellow coordinate (b*) averaged 17.2 for the adaxial and 17.3 for the abaxial leaf surface. Hue angle (h*) for green leaves averaged 120.9° for the adaxial and 126.2° for the abaxial leaf surface. Colour saturation (Chroma, C*) averaged 21.3 for the adaxial and 20.2 for the abaxial leaf surface. Lightness (L*) averaged 35.4 for the adaxial and 47.2 for the abaxial leaf surface of green leaves. Late in the season, over one-half (53.9%) of the 730 PIs showed some level of purple pigmentation in the leaf lamina. Late-season purple leaves were collected and colour coordinates were recorded for 118 PIs grown in the field. For purple leaves, values for a*, b*, C*, L* and h* averaged 2.3, 6.2, 7.9, 28.2 and 64.4° for the adaxial surface and −1.0, 12.7, 13.9, 43.1 and 87.0° for the abaxial leaf surface, respectively.

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“…2004), soybean (Ross et al 2015), and sweet potato [ Ipomoea batatas (L.) Lam.] (Harrison and Jackson 2011) cultivars following herbicide applications.…”

Section: Resultsmentioning

confidence: 99%

Clomazone and Starter Nitrogen Fertilizer Effects on Growth and Yield of Hybrid and Inbred Rice Cultivars

et al. 2017

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Cultivar and/or application of early-season (starter) nitrogen (N) fertilizer may influence rice tolerance to clomazone. Field studies were conducted to compare the response of hybrid and inbred rice cultivars to applications of clomazone and starter N fertilizer treatments. The inbred cultivar ‘Cocodrie’ and the hybrid cultivar ‘XL723’ were treated with clomazone at 0, 420, or 672 g ai ha−1immediately after seeding, and starter N fertilizer was applied at 0 or 24 kg N ha−1when rice reached the two-leaf growth stage. Pooled across clomazone rates and starter N fertilizer treatments, height of Cocodrie 1 week after emergence (WAE) was greater than that of XL723 in 1 of 3 yr. The difference in height between Cocodrie and XL723 resulted from greater clomazone injury 1 WAE on XL723 compared with Cocodrie. No differences in rice height 3 WAE were detected between Cocodrie and XL723 in 2 of 3 yr. when data were pooled across clomazone rates and starter N fertilizer treatments. Injury 3 WAE was similar for Cocodrie across the 3 yr., but injury on XL723 was greater in 1 of 3 yr. Rough rice yield was lower in plots treated with either rate of clomazone where no starter N fertilizer treatment was applied; however, in plots receiving a starter N fertilizer treatment, no effect of clomazone rate on rough rice yield was observed. Clomazone rate did not influence rough rice yield of Cocodrie in any single yr., but rough rice yields of XL723 were lower in plots receiving clomazone compared with plots that received no clomazone in 1 of 3 yr. Therefore, differential susceptibility to clomazone between Cocodrie and XL723 exists based on early-season response and rough rice yield. Starter N fertilizer treatments were beneficial for overcoming yield reductions due to clomazone injury.

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Greenhouse Assessment of Differences in Clomazone Tolerance among Sweetpotato Cultivars

Cited by 12 publications

References 10 publications

In Vitro Safening of Bentazon by Melatonin in Sweetpotato (Ipomoea batatas)

In Vitro Safening of Bentazon by Melatonin in Sweetpotato (Ipomoea batatas)

Phenotypic analysis of leaf colours from the USDA, ARS sweetpotato (Ipomoea batatas) germplasm collection

Clomazone and Starter Nitrogen Fertilizer Effects on Growth and Yield of Hybrid and Inbred Rice Cultivars

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