A Survey of Beet Leafhopper Populations on Sugar Beets in the Imperial Valley, California, 1953–19581

Flock, R. A.; Deal, A. S.

doi:10.1093/jee/52.3.470

Cited by 5 publications

(1 citation statement)

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“…plutella is also a parasite of Aceratagallia sp. and C. tenellus, both of which can become abundant on certain plants in the area (Flock and Deal, 1959;Flock et al, 1962). A portion of the asynchrony evident between this 1.…”

Section: Parasitesmentioning

confidence: 93%

Bionomics ofEmpoasca solanadelong on cotton in southern California

Moffitt¹,

Reynolds²

1972

Hilg

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This study was initiated (1963) to obtain bionomical knowledge of Empoasca solana -DeLong, the southern garden leafhopper, which could help ImproveIntegrated control meas.;ures on cotton.' The followingsubjects were investigated in the field: relationship of populations on cotton to those on other crops in the area; sea-"~\ ..,.... sonaroccurrence and abundance; damage,to cotton; association 'of parasites and predators with l E. solana; seasonal occurrence and abundance of the,parasites; effects of various control measures upon E. solana and the parasites. -Laboratory investigations supplemented {the field studies, with particular emphasis being placed upon the development of E. solana under~ntrolled environmental condi-'t ions, .the differentiation of all species of Empoal'ca found in California cotton fields, and the establishment of thetypes of injury I inflicted upon cotton by the three species 'most commonly found hi . C Iif . on t 1S crop m a 1 orrua, -It was found that populations of E. solana overwinter in sugar beet fields in California's southern desert valleys. High population levels are reached in late spring on sugar beets, and the populations move into adjacent rcotton fields as sugar b~ts becomeunattractive to the leafhoppers:\Population levels in ,cotton fields generally peak in early and mid-summer. ,,/ (Continued inside back cover)

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Section: Parasitesmentioning

confidence: 93%

Bionomics ofEmpoasca solanadelong on cotton in southern California

Moffitt¹,

Reynolds²

1972

Hilg

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Role of Circulifer/Neoaliturus in the Transmission of Plant Pathogens

Klein

1992

Advances in Disease Vector Research

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A Tomato-Free Period Delays and Reduces Begomovirus Disease in Processing Tomato Fields in a Complex Agroecosystem in Central Brazil

de Macedo,

Gilbertson,

Rojas

et al. 2024

Plant Disease

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A mandatory tomato-free period (TFP) was implemented in the state of Goiás, Brazil, in 2007 to help manage diseases caused by whitefly-transmitted begomoviruses. The impact of the TFP was examined in five locations across three states in Central Brazil from 2013-2016. Surveys revealed significant differences in begomovirus disease incidence among locations, i.e., low in Guaíra-TFP and Patos de Minas-TFP, moderate-high in Itaberaí-TFP and Morrinhos-TFP, and high in the non-TFP (NTFP) control, Cristalina-NTFP. PCR tests and DNA sequencing were used to validate the symptoms, and showed that all collected symptomatic plant samples were infected with tomato severe rugose virus (ToSRV), a common indigenous bipartite begomovirus. Early season surveys (20-40 days after transplants [DAT]) in Itaberaí-TFP and Morrinhos-TFP revealed significantly less begomovirus disease in fields established sooner after the TFP (0-2 months) compared with incidences in (i) equivalent early-planted fields in the Cristalina-NTFP control; and (ii) in fields established longer after the end of the TFP (>2-5 months). Whitefly infestation of crops was detected year-round in all locations and years, and all tested adults were classified in the Bemisia tabaci MEAM1 cryptic species. Infestation levels were significantly higher during the summer, but did not vary significantly among locations. Results of monthly monitoring of adult whiteflies for general begomovirus and ToSRV detection was positively correlated, and was an indicator of disease incidence in the field. Notably, ToSRV was not detected in whiteflies collected from non-tomato plants during the TFP, and there was a longer lag period before detection in whiteflies collected from processing tomatoes for Itaberaí-TFP and Morrinhos-TFP compared with Cristalina-NTFP. Taken together with the low levels of ToSRV infection detected in potential non-tomato reservoir hosts at all locations, our results revealed low levels of primary inoculum during the TFP. Thus, even in a complex agroecosystem with year-round whitefly infestation of crops, the TFP was beneficial because of delayed and reduced begomovirus disease pressure during a critical stage of plant development (first month) and for favoring low levels of primary inoculum. Thus, we concluded that the TFP should be part of a regional IPM program targeting ToSRV in Brazil.

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A Survey of Beet Leafhopper Populations on Sugar Beets in the Imperial Valley, California, 1953–19581

Cited by 5 publications

References 0 publications

Bionomics ofEmpoasca solanadelong on cotton in southern California

Bionomics ofEmpoasca solanadelong on cotton in southern California

Role of Circulifer/Neoaliturus in the Transmission of Plant Pathogens

A Tomato-Free Period Delays and Reduces Begomovirus Disease in Processing Tomato Fields in a Complex Agroecosystem in Central Brazil

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