Ovipositional antixenosis to Phyllocnistis citrella Stainton in Citrus genotypes and related genera

Santos, Mônica Silva; Vendramim, José Djair; Dias-Pini, Nívia da Silva; Lourenção, A. L.; Bogorni, P. C.; Ribeiro, Leandro do Prado

doi:10.1007/s12600-020-00814-7

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…We found that P. citrella prevalence was greater on some varieties of citrus than others. This is consistent with Santos et al (2020) who found differences in attack by P. citrella among citrus genotypes, although not the same ones as included in this study.…”

Section: Discussionsupporting

confidence: 93%

Abiotic and cultivar effects on the incidence of pest arthropods in 16 citrus scion varieties grafted on two rootstocks

Varón-Devia¹,

Flórez-Cárdenas²,

Jaramillo-Barrios³

et al. 2021

Citrus Res. Technol.

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Interactions among pests could differ among types of citrus hosts. Also, the climate factors may affect the population fluctuation of these pests. Therefore, the aim of this study was to establish the potential vulnerability of citrus cultivars to pest pressure over time as an aid to pest management. During 48 months between 2017 and 2020, pest arthropods from the families Aphididae, Liviidae, Gracillariidae, Aleyrodidae, Diaspididae and the order Acari were sampled bi-weekly in a common orchard with 32 cultivars [(16 citrus scion varieties of three citrus types (9 oranges, 4 mandarins, and 3 limes-lemons) grafted onto two rootstocks (CPB 4475 and SxE)]. Percentage of presence of each arthropod taxon was determined by visually inspecting five leaf buds or five leaves or five fruits, or combination of those, in two of six randomly sampled trees, in each one of three 210 m 2 plots established for each cultivar, for a total of 192 trees in each sampling. Percentages of presence of each arthropod taxon on each tree among cultivars were compared and correlations between these percentages and the climatic factors temperature, relative humidity, and rainfall recorded on a daily basis, were calculated. Among the three citrus types, mandarins had the greatest presence of aphids; oranges had the greatest presence of whiteflies, leafminers and Diaphorina citri, and limes-lemons had the greatest presence of mites. Presence of mites, aphids, D. citri and leafminer were positively correlated to relative humidity. Among mandarin varieties aphids had higher percentage of presence on Oneco and Owari Satsuma and among orange varieties Pineapple had a higher presence of it than the other varieties in study. Leaf miner had higher presence on Orange Sweet variety grafted on SxE rootstock than on any other orange cultivar.

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Section: Discussionsupporting

confidence: 93%

Abiotic and cultivar effects on the incidence of pest arthropods in 16 citrus scion varieties grafted on two rootstocks

Varón-Devia¹,

Flórez-Cárdenas²,

Jaramillo-Barrios³

et al. 2021

Citrus Res. Technol.

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Impact of Insecticide Treatments for Phyllocnistis citrella (Lepidoptera: Gracillariidae) on Growth and Yield of Young Citrus reticulata Mandarins

Grafton-Cardwell

Daugherty

2021

Journal of Economic Entomology

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The citrus leafminer, Phyllocnistis citrella Stainton, is an invasive pest of citrus whose larvae damage developing leaves, which can impact tree photosynthetic capacity and may ultimately reduce tree growth and yield. Damage is most pronounced in young trees due to their greater propensity for production of new foliage, which supports P. citrella oviposition and larval development. We studied P. citrella damage and tree growth and yield among different insecticide treatment regimes to gauge their effectiveness at protecting young citrus trees. Three levels of insecticide treatments were applied over 3 yr to ‘Tango’ mandarin (Citrus reticulata Blanco) citrus trees planted in the prior summer, which were inspected regularly along with untreated trees. Leaves suitable for oviposition by P. citrella were available during all census dates, though their numbers fluctuated in the summer months. Phyllocnistis citrella were suppressed for 2–3 wk by systemic or foliar treatments of insecticides. The higher number of treatments provided more sustained suppression of larvae. Trunk diameter was unchanged and canopy volume affected by only the most aggressive treatment regime. However, citrus yield was 2–2.5 times higher following the second year of treatments and 1.2- to 1.8-fold times following the third year of treatments for trees in the treatment regimes that included systemic imidacloprid plus 2–3 or 4–5 foliar applications, respectively, relative to untreated controls. Suitable leaf flush and larval densities declined over the 3 yr of the study. These data support the use of insecticidal control of P. citrella to protect young ‘Tango’ mandarin trees, but demonstrated that frequent applications are necessary to suppress populations.

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Ovipositional antixenosis to Phyllocnistis citrella Stainton in Citrus genotypes and related genera

Cited by 2 publications

References 17 publications

Abiotic and cultivar effects on the incidence of pest arthropods in 16 citrus scion varieties grafted on two rootstocks

Abiotic and cultivar effects on the incidence of pest arthropods in 16 citrus scion varieties grafted on two rootstocks

Impact of Insecticide Treatments for Phyllocnistis citrella (Lepidoptera: Gracillariidae) on Growth and Yield of Young Citrus reticulata Mandarins

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