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| Registros recuperados: 114 | |
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| Strausbaugh, C.A.; Olsen L, Nora; Frazier J, Mary; Wambolt, C. |
| Preventing sucrose losses in storage is important to the economic viability of the sugar beet industry. In an effort to establish additional measures for reducing sucrose losses in storage, ten fungicide and/or biological treatments were evaluated on sugar beet roots in a commercial sugar beet storage building for their ability to limit fungal growth on roots harvested 2 Oct. Six of the treatments were applied as a direct spray to roots, but two treatments were applied as a cold fog and two others were applied as a thermal fog. The treated eight-beet root samples were arranged in a randomized complete block design with 6 replications on top of the commercial sugar beet pile inside a storage building. Roots were evaluated for fungal growth, root rot,... |
| Tipo: Article |
Palavras-chave: Resistance; Storage; Sugarbeet. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1603/1/1561.pdf |
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| Eujayl, Imad A.; Strausbaugh, C.A.; Chunsheng, Lu. |
| KDH13 is a sugar beet (Beta vulgaris L. ssp vulgaris) doubled haploid line (PI 663862) released as a genetic stock by USDA-ARS in cooperation with the Beet Sugar Development Foundation, Denver, CO. KDH13 is resistant to beet curly top (BCT) caused by Beet curly top virus which is transmitted by the beet leafhopper (Circulifer tenellus Baker). KDH13 was extracted from the BCT resistant C762-17 (PI 560130) parental line that segregates for BCT resistance and genetic male sterility. Intensive phenotypic screening was used for selecting plants from C762-17 that showed no symptoms under fully controlled infection conditions in the greenhouse. Seed from a single plant was used as a donor of floral buds for isolation of unfertilized ovaries to regenerate KDH13... |
| Tipo: Article |
Palavras-chave: Curly top; Genetics; Resistance; Sugarbeet. |
| Ano: 2016 |
URL: http://eprints.nwisrl.ars.usda.gov/1608/1/1566.pdf |
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| Strausbaugh, C.A.; Eujayl, Imad A.; Foote, P.. |
| Eighteen commercial sugar beet cultivars were grown in a commercial sprinkler-irrigated sugar beet field near American Falls, ID where potatoes were grown in 2007. The plots were planted on 21 Apr 08 and managed according to standard cultural practices. Plants were free of foliar and root disease symptoms. Four roots representative of each cultivar were hand topped and harvested on 1 Oct. The roots were then placed in a cold room at 3°C and 90% relative humidity until they were assayed on 7 Jan 09. The roots were washed, dipped in 0.6% sodium hypochlorite solution for 1 min, rinsed in sterile reverse osmosis water, and then air dried in a laminar hood. A cross section of the root 8-10 mm thick and 45-70 mm in diameter was cut just below the... |
| Tipo: Article |
Palavras-chave: Sugarbeet. |
| Ano: 2010 |
URL: http://eprints.nwisrl.ars.usda.gov/1379/1/1355.pdf |
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| Strausbaugh, C.A.; Camp, S.. |
| Transgenic (resistant to glyphosate) sugar beet cultivars were evaluated in a commercial sprinkler-irrigated sugar beet field near Heyburn, ID where winter wheat was grown in 2005. The field trial relied on natural infection of Verticillium dahliae. The plots were planted on 28 Apr to a density of 142,560 seeds/A, and thinned to 47,520 plants/A on 15-20 Jun. Plots were four rows wide (22-in. row spacing) and 34.5 ft long. The experimental design was a randomized complete block design with eight replications per cultivar. The field was cultivated on 8 and 20 Jun. The crop was managed by the grower according to standard cultural practices except for herbicide applications. Transgenic cultivars were sprayed with broadcast applications of glyphosate at... |
| Tipo: Article |
Palavras-chave: Verticillium wilt. |
| Ano: 2007 |
URL: http://eprints.nwisrl.ars.usda.gov/1225/1/1206.pdf |
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| Strausbaugh, C.A.; Rearick, E.; Eujayl, Imad A.; Foote, P.. |
| The Rhizoctonia-bacterial root rot complex can lead to yield loss in the field but may also lead to problems with sucrose loss in storage. Thus, studies were conducted to investigate if placing sugarbeet roots suffering from root rot together with healthy roots could compromise the ability of the healthy roots to retain sucrose. Over a three year period, root samples from three commercial cultivars were compared in storage as a healthy (eight healthy roots) or rotted (eight healthy roots + one rotted root) treatment inside an outdoor storage pile. The experiment was arranged as a split block (healthy in one half of block and rotted in the other) with the whole blocks arranged in a randomized complete block design with four replications. Samples were... |
| Tipo: Article |
Palavras-chave: Root rots; Sugarbeet; Bacteria. |
| Ano: 2011 |
URL: http://eprints.nwisrl.ars.usda.gov/1484/1/1406.pdf |
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| Strausbaugh, C.A.; Eujayl, I.A.. |
| Curly top caused by Beet curly top virus is a widespread disease problem vectored by the beet leafhopper in semiarid sugar beet production areas. Host resistance is the primary defense against this problem, but resistance in commercial cultivars is only low to intermediate. In order to identify novel sources of curly top resistance, 14 sugar beet lines were screened in a disease nursery in 2015. The lines were arranged in a randomized complete block design with six replications. A curly top epiphytotic was created by releasing six viruliferous beet leafhoppers per plant at the four-to six-leaf growth stage on 24 Jun. Foliar symptoms were evaluated on 13 and 20 Jul using a scale of 0-9 (0 = healthy and 9 = dead) in a continuous manner. Curly top... |
| Tipo: Article |
Palavras-chave: Curly top; Resistance; Sugarbeet. |
| Ano: 2016 |
URL: http://eprints.nwisrl.ars.usda.gov/1616/1/1573.pdf |
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| Strausbaugh, C.A.; Eujayl, Imad A.; Foote, P.. |
| The Rhizoctonia-bacterial root rot complex continues to be a concerning problem in sugar beet production areas. To investigate resistance to this complex in 26 commercial sugar beet cultivars, field studies and greenhouse studies with mature roots from the field were conducted with Rhizoctonia solani AG-2-2 IIIB strains and Leuconostoc mesenteroides. Based on means for the 26 cultivars in the 2010 and 2011 field studies, fungal rot ranged from 0 to 8%, bacterial rot ranged from 0 to 37%, total rot ranged from 0 to 44%, and surface rot ranged from 0 to 52%. All four rot variables resulted in significant (P < 0.0001) cultivar differences. Based on regression analysis, strong positive relationships (r2 from 0.6628 to 0.9320; P < 0.0001) were present... |
| Tipo: Article |
Palavras-chave: Root rots; Sugarbeet; Bacteria. |
| Ano: 2013 |
URL: http://eprints.nwisrl.ars.usda.gov/1475/1/1440..pdf |
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| Strausbaugh, C.A.; Eujayl, Imad A.; Wambolt, C. |
| Rhizomania caused by Beet necrotic yellow vein virus (BNYVV) and storage losses are serious sugar beet production problems. To identify sugar beet cultivars with resistance to BNYVV and evaluate storability, 30 experimental cultivars were screened by growing them in a sugar beet field infested with BNYVV in Kimberly, ID during the 2014 growing season in a randomized complete block design with 6 replications. At harvest on 24-25 September 2014, roots were dug and evaluated for symptoms of rhizomania and also placed in an indoor commercial sugar beet storage building. After 138 days in storage, samples were evaluated for surface rot, weight loss, and sucrose loss. Surface root rot ranged from 6 to 82%, weight loss ranged from 9.1 to 17.5%, sucrose losses... |
| Tipo: Article |
Palavras-chave: Resistance; Rhizomania; Sugarbeet. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1601/1/1559.pdf |
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| Strausbaugh, C.A.; Eujayl, Imad A.. |
| The Rhizoctonia-bacterial root rot complex in sugarbeet caused by Rhizoctonia solani and Leuconostoc mesenteroides can cause significant yield losses. To investigate the impact of different tillage systems on this complex, field studies were conducted from 2009 to 2011. Split blocks with conventional and strip tillage as main plot treatments were arranged in a randomized complete block design with four replications. Within main plots, there were seven treatments (non-inoculated check and six R. solani AG-2-2 IIIB strains). Regardless of tillage, the roots responded in a similar manner for fungal rot (conventional 8% versus strip 7%), bacterial rot (26% versus 34%), total rot (33% versus 41%), neighboring roots infected (1.7 roots versus 1.5 roots),... |
| Tipo: Article |
Palavras-chave: Root rots; Sugarbeet; Bacteria. |
| Ano: 2012 |
URL: http://eprints.nwisrl.ars.usda.gov/1472/1/1437.pdf |
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| Strausbaugh, C.A.. |
| Rhizomania is a serious yield limiting viral disease in sugarbeet first identified in California, USA in 1984. The disease has since spread to all major production areas in the United States. Rhizomania is caused by Beet necrotic yellow vein virus (BNYVV) and vectored by the plasmodiophorid (a fungal-like organism), Polymyxa betae. The virus survives inside the thick-walled resting spore of the vector in the soil, which can remain viable for many years. As a result, once a field is infested, using crop rotation and non-host crops will not be effective for controlling the disease. In the spring with near saturated soil conditions, the resting spore will germinate to release zoospores when in close proximity to sugarbeet roots. The zoospores will... |
| Tipo: Article |
Palavras-chave: Rhizomania; Storage; Sugarbeet. |
| Ano: 2013 |
URL: http://eprints.nwisrl.ars.usda.gov/1498/1/1461.pdf |
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| Strausbaugh, C.A.. |
| Rhizoctonia root and crown is an important disease problem in sugar beet caused by Rhizoctonia solani and also shown to be associated with Leuconostoc. Since, the initial Leuconostoc studies were conducted with only a few isolates and the relationship of Leuconostoc with R. solani is poorly understood, a more thorough investigation was conducted. A total of 203 Leuconostoc isolates were collected from recently harvested sugar beet roots in southern Idaho and southeastern Oregon during 2010 and 2012: 88 and 85% L. mesenteroides, 6 and 15% L. pseudomesenteroides, 2 and 0% L. kimchi, and 4 and 0% unrecognized Leuconostoc sp., respectively. Based on 16S rRNA sequencing, haplotype 11 (L. mesenteroides isolates) comprised 68 to 70% of the isolates both... |
| Tipo: Article |
Palavras-chave: Rhizomania; Root rots; Sugarbeet. |
| Ano: 2016 |
URL: http://eprints.nwisrl.ars.usda.gov/1620/1/1577.pdf |
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| Strausbaugh, C.A.; Eujayl, I.A.. |
| Rhizomania caused by Beet necrotic yellow vein virus (BNYVV) and storage losses are serious sugar beet production problems. To investigate the influence of BNYVV on storability, six sugar beet cultivars varying for resistance to BNYVV were grown in 2005 and 2006 in southern Idaho fields with and without BNYVV infested soil. At harvest, samples from each cultivar were placed in an outdoor pile as a randomized complete block design with 4 reps in Twin Falls, ID and were removed on 40-day intervals starting the end of October. After 144 and 142 days in storage, sugar reduction across cultivars averaged 20 and 13% without and 68 and 21% with BNYVV for the 2005 and 2006 roots, respectively. In the December samplings, frozen root area was 1 and 2% without... |
| Tipo: Article |
Palavras-chave: Sugarbeet. |
| Ano: 2008 |
URL: http://eprints.nwisrl.ars.usda.gov/1277/1/1254.pdf |
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| Strausbaugh, C.A.; Camp, S.. |
| Commercial sugar beet cultivars were evaluated in a commercial sprinkler-irrigated sugar beet field near Heyburn, ID where winter wheat was grown in 2005. The field trial relied on natural infection of Verticillium dahliae. The plots were planted on 28 Apr to a density of 142,560 seeds/A, and thinned to 47,520 plants/A on 15-20 Jun. Plots were four rows wide (22-in. row spacing) and 34.5 ft long. The experimental design was a randomized complete block design with eight replications per cultivar. The field was cultivated on 8 and 20 Jun. The crop was managed by the grower according to standard cultural practices. The percentage of plants with leaves that had dead vein delimited sectors was recorded for the center two rows on 6 Sep. The center two rows... |
| Tipo: Article |
Palavras-chave: Verticillium wilt. |
| Ano: 2007 |
URL: http://eprints.nwisrl.ars.usda.gov/1223/1/1204.pdf |
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| Strausbaugh, C.A.; Neher, Oliver T.; Rearick, E.; Eujayl, Imad A.. |
| Root rots in sugar beet storage can lead to million dollar losses because of reduced sucrose recovery. Thus, studies were conducted to establish better chemical control options and a better understanding of the fungi involved in the rot complex. A water check and three fungicides (Mertect, Propulse, and Stadium) were investigated for their ability to control fungal rot on sugar beet roots held in long term storage during both the 2012 and 2013 storage seasons. At the end of September into October, roots were collected on five subsequent weeks, treated, and placed on top of a commercial indoor storage pile until early February. Both Propulse and Stadium performed well, by reducing fungal growth and rot on roots versus the check by an average of 84 to... |
| Tipo: Article |
Palavras-chave: Root rots; Storage; Sugarbeet. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1607/1/1565.pdf |
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| Strausbaugh, C.A.; Eujayl, Imad A.. |
| The Rhizoctonia-bacterial root rot complex on sugarbeet caused by Rhizoctonia solani and Leuconostoc mesenteroides can cause significant yield losses. To investigate the impact of different tillage systems on this complex, field studies were conducted from 2009 to 2011. Split blocks with conventional and strip tillage as main plot treatments were arranged in a randomized complete block design with four replications. Within main plots, there were seven treatments (non-inoculated check and six R. solani AG 2-2 IIIB strains). Regardless of tillage, the roots responded in a similar manner for fungal rot (conventional 8% versus strip 7%), bacterial rot (26% versus 34%), total rot (33% versus 41%), neighboring roots infected (1.7 roots versus 1.5 roots),... |
| Tipo: Article |
Palavras-chave: Root rots; Sugarbeet; Tillage. |
| Ano: 2012 |
URL: http://eprints.nwisrl.ars.usda.gov/1471/1/1436.pdf |
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| Strausbaugh, C.A.; Eujayl, I.A.; Rearick, E.; Foote, P.. |
| Rhizomania caused by Beet necrotic yellow vein virus (BNYVV) and storage losses are serious sugar beet production problems. To identify sugar beet cultivars with resistance to BNYVV and evaluate storability, 22 commercial cultivars were screened by growing them in a commercial sugar beet field naturally infested with BNYVV in Declo, ID during the 2009 growing season in a randomized complete block design with 4 replications. At harvest on 13 October 2009, roots were dug and evaluated for symptoms of rhizomania and also placed in an indoor commercial sugar beet storage building. Storage samples were evaluated for fungal growth known to correlate with sucrose loss. Depending on cultivar, surface fungal growth ranged from 5 to 42% by 18 February 2010. Overall,... |
| Tipo: Article |
Palavras-chave: Sugarbeet. |
| Ano: 2010 |
URL: http://eprints.nwisrl.ars.usda.gov/1396/1/1368.pdf |
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| Neher, Oliver T.; Strausbaugh, C.A.. |
| Bacterial root rot initiated by lactic acid bacteria, particularly Leuconostoc, occurs every year in Idaho sugarbeet fields. Hot fall weather seems to make the problem worse. Although Leuconostoc initiates the rot, other bacteria and yeast frequently invade the tissue as well. The acetic acid bacteria, particularly Gluconobacter, are what give the rotted tissue a fermented vinegar-like smell. The bacteria gain entry into the root through wounds caused by rodents, growth cracks, and fungal lesions such as those associated with Rhizoctonia root rot. No definite management practices for bacterial root rot in sugarbeet have been established, but minimizing problems with rodents and fungal root rots would be advisable. |
| Tipo: Article |
Palavras-chave: Root rots; Sugarbeet. |
| Ano: 2013 |
URL: http://eprints.nwisrl.ars.usda.gov/1530/1/1452.pdf |
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| Registros recuperados: 114 | |
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