Incidence, severity, and distribution of pests in potato (Solanum tuberosum L. cv. 'Gazelle')

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Ileana Miranda Cabrera
Rolisbel Alfonso de la Cruz
Danay Infante Martínez
Lázaro Cuellar Yanes
Lizandra Guerra Arzuaga
Adayakni Sánchez Castro
Miguel Ángel Hernández
Heyker L. Baños Díaz
María de los Ángeles Martínez Rivero
Moraima Suris Campos

Abstract

To determine the incidence and severity of late blight (Phytophthora infestans (Mont.) de Bary), early blight (Alternaria solani Sor.), and vector insect distribution in a plot of potato (Solanum tuberosum L. cv. 'Gazelle'), samplings were carried out from 28 days after planting during the 2021-2022 and 2022-2023 campaigns. The study was conducted at the variety garden of the National Institute of Agricultural Sciences of Cuba. Integrated pest management was used following the technical instructions, and irrigation was by a mechanized sprinkler system. Disease progress curves were developed, and the insect spatial arrangement (distribution pattern) and the relationship between population density and meteorological variables were evaluated. Progression of both blights was observed to be delayed by the periodic application of fungicides. Nevertheless, in the 2022-2023 campaign, the distribution of early blight exceeded 80% from 56 days after sowing (DDP) and reached 100% at 70 DDP. Late blight was already observed in 100% of the plants sampled at 63 DDP; probably due to an increase in the number of days with rain. The insects identified were the aphid Myzus persicae Sulzer, the whitefly Bemisia tabaci Gennadius, and in the case of thrips, a complex of species was observed. Aphids with a high aggregation index were predominant in the 2021-2022 campaign, while a higher density of whiteflies with non-gregarious behavior was present in the 2022-2023 campaign, which implied a greater dispersal of plants with viral infection symptoms. It is evident that, even with crop management, there is an increase in pests as a result of climate change.

Article Details

How to Cite
1.
Miranda Cabrera I, Alfonso de la Cruz R, Infante Martínez D, Cuellar Yanes L, Guerra Arzuaga L, Sánchez Castro A, Hernández M Ángel, Baños Díaz HL, Martínez Rivero M de los Ángeles, Suris Campos M. Incidence, severity, and distribution of pests in potato (Solanum tuberosum L. cv. ’Gazelle’). Rev. Protección Veg. [Internet]. 2025 Nov. 25 [cited 2026 Apr. 24];40:https://cu-id.com/2247/v40e16. Available from: https://censa.edicionescervantes.com/index.php/RPV/article/view/1451
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ORIGINAL ARTICLES

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