Spread and Control of Potato Leafroll Virus in Minnesota

Hanafi, A.; Radcliffe, Edward B.; Ragsdale, David W.

doi:10.1093/jee/82.4.1201

Cited by 85 publications

(35 citation statements)

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“…the abundance of Myzus persicae and the percent infection of plants with PLRV (Hanafi et al, 1989), and confirmed by many researchers. Furthermore, Gabriel et al (1975) found a strong correlation between the numbers of winged forms of some aphid vectors of PVY trapped by yellow pan traps and potato infestation with the virus, while no effect of wingless aphids was detected by the 100 leaf count method on PVY tuber infection.…”

Section: Factors Leading To a Decision On Early Termination Of Haulm supporting

confidence: 58%

The effects of monitoring the abundance and species composition of aphids as virus vectors on seed potato production in Serbia

Milošević¹,

Milenkovic

Perić

et al. 2014

PESTIC PHYTOMED

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SUMMARYAphids are the most important vectors of potato viruses during the crop's growing season. The most widespread and damaging viruses, the potato virus Y and potato leaf roll virus, are transmitted by aphids in non-persistent and persistent manner, respectively. The two viruses cause the greatest concern of potato producers and a great constraint to seed potato production in Serbia, the region and across the world. Potato virus Y is particularly harmful, given its distribution and spreading rate.Seed potato production systems under well-managed conditions involve a series of virus control measures, including the monitoring of outbreaks of winged aphids, their abundance and species composition, in order to forecast virosis, i.e. potential plant and tuber infection periods. Monitoring the aphid vectors of potato viruses enables determination of optimum dates for haulm destruction when higher than normal numbers of winged aphids as vectors of economically harmful diseases have been observed. Haulm destruction in a potato crop reduces the risk of plant infection and virus translocation from the aboveground parts to tubers, thus keeping the proportion of infected tubers within tolerance limits allowed for certain categories of seed potatoes. This practice has positive effects if used in combination with other viral disease control measures; otherwise, it becomes ineffective.This paper provides an integral analysis of the effects and role of monitoring outbreaks of aphids, their abundance and species composition in timing haulm growth termination to prevent plant infection, virus translocation and tuber infestation in potato crops in Serbia and the wider region.

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Section: Factors Leading To a Decision On Early Termination Of Haulm supporting

confidence: 58%

The effects of monitoring the abundance and species composition of aphids as virus vectors on seed potato production in Serbia

Milošević¹,

Milenkovic

Perić

et al. 2014

PESTIC PHYTOMED

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“…where N i is the total number of aphids on a plant at a given evaluation date i, N i+1 is the total number of aphids on the same plant on the subsequent evaluation date, and T is the number of days between the two evaluation dates [14]. As described above, evaluations were performed for 21 days.…”

Section: Antibiosis Evaluationmentioning

confidence: 99%

Categories of Resistance to Greenbug and Yellow Sugarcane Aphid (Hemiptera: Aphididae) in Three Tetraploid Switchgrass Populations

et al. 2014

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Switchgrass, Panicum virgatum L., has been targeted as a bioenergy feedstock. However, little is currently known of the mechanisms of insect resistance in this species. Here, two no-choice studies were performed to determine the categories (antibiosis and tolerance) and relative levels of resistance of three switchgrass populations (Kanlow-lowland ecotype, Summer-upland ecotype, and third generation derivatives between Kanlow×Summer plants, K×S) previously identified with differential levels of resistance to the greenbug, Schizaphis graminum (Rondani), and yellow sugarcane aphid, Sipha flava (Forbes). No-choice studies indicated that Kanlow possessed multi-species resistance, with high levels of antibiosis to both aphid species, based on aphid survival at 7 and 14 days after aphid introduction and cumulative aphid days, while K×S possessed low-to-moderate levels of antibiosis to S. flava. Further, functional plant loss indices based on plant height and biomass indicated that tolerance is an important category of resistance for Summer plants to S. graminum. These studies also indicated that Summer lacks both tolerance and antibiosis to S. flava, relative to the other switchgrasses tested, whereas K×S lack tolerance and antibiosis to S. graminum. These studies are the first attempt to analyze the categories of resistance in switchgrass and provide critical information for characterizing the biological mechanisms of resistance and improving our knowledge of the plant-insect interactions within this system.

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“…However, insecticides tend to be much more effective in preventing spread of persistently transmitted viruses, than in preventing spread of nonpersistently transmitted viruses (Perring et al 1999). Previous Minnesota research demonstrated that spread of the persistently transmitted PLRV could be prevented by maintaining densities of M. persicae apterae below 3-10 per 100 leaves by foliar application of methamidophos (O, S-dimethyl phosphoramidothioate) (Hanafi et al 1989;Flanders et al 1991). In contrast, insecticides were found to be of no benefit in preventing spread of the nonpersistently transmitted PVY (Ragsdale et al 1994).…”

Section: Introductionmentioning

confidence: 99%

Border Treatment to Reduce Insecticide Use in Seed Potato Production: Biological, Economic, and Managerial Analysis

et al. 2008

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Worldwide, Myzus persicae (Sulzer) is considered the key vector of Potato leafroll virus (PLRV). In the northern Great Plains, introduction of PLRV into seed potato fields is coincident with mid-summer dispersal of winged M. persicae from local crop and weed hosts. Initial colonization of potato fields tends to occur at field margins. In 2003, experiments were conducted in 23 seed potato fields to evaluate effectiveness of targeted methamidophos applications for M. persicae control. These applications provided excellent control (>94%) of colonizing aphids in the borders, slowed subsequent within field spread, and necessitated treatment of 95% fewer hectares than would treating entire fields. Across entire fields, control costs averaged $4.22 per ha for border treatments compared to a hypothetical $58.91 per ha for applying methamidophos to entire fields. Thus targeted insecticide applications can provide effective M. persicae control in seed potato fields while greatly lowering insecticide use and application costs overall.Resumen Myzus persicae (Sulzer) es considerado a nivel mundial el vector clave del virus del enrollamiento de la papa (PLRV). En el norte de las Grandes Llanuras, la introducción de PLRV en campos de semilla coincide con la dispersión a mitad del verano de M. persicae alado a partir de cultivos locales y maleza hospedante. La colonización inicial de los campos de papa tiende a realizarse en los bordes de los campos. En 2003, se realizaron experimentos en 23 campos de semilla de papa para evaluar la efectividad del metamidofos para el control de M. persicae. Las aplicaciones dieron un excelente control (> 94%) de los áfidos colonizadores en el borde de los campos, retardaron la posterior diseminación dentro del campo y necesitaron el tratamiento de 95% hectáreas menos que para el tratamiento de campos íntegros. En todos los campos, el costo del control promedió $ 4.22 por ha para el tratamiento de los bordes comparado con un hipotético $ 58.91 por ha, para aplicar metamidofos a todo el campo. De este modo, las aplicaciones dirigidas de un insecticida pueden proporcionar un control efectivo de M. persicae en campos de semilla de papa disminuyendo enormemente el uso del insecticida y los gastos totales de aplicación.

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Spread and Control of Potato Leafroll Virus in Minnesota

Cited by 85 publications

References 0 publications

The effects of monitoring the abundance and species composition of aphids as virus vectors on seed potato production in Serbia

The effects of monitoring the abundance and species composition of aphids as virus vectors on seed potato production in Serbia

Categories of Resistance to Greenbug and Yellow Sugarcane Aphid (Hemiptera: Aphididae) in Three Tetraploid Switchgrass Populations

Border Treatment to Reduce Insecticide Use in Seed Potato Production: Biological, Economic, and Managerial Analysis

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