Torres Burgos, Yaneris L.

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    Marchitez súbita de la sandía (Citrullus lanatus): Hospederos y manejo
    (2024-05-08) Torres Burgos, Yaneris L.; Estévez de Jensen, Consuelo; College of Agricultural Sciences; Cabrera Asencio, Irma; Hernández Heredia, Ermita; Department of Agro-Environmental Sciences; Velázquez Augusto, Wesley
    One of the challenges that farmers face to achieve an optimal (or desirable) performance in their production is the management or control of diseases caused by phytopathogenic organisms, as well as those caused by viruses. The production of watermelon [Citrullus lanatus (Thunb) Matsun & Nakai] in the southwestern area of Puerto Rico has been challenged by the management of viral diseases such as the Watermelon vine decline (WVD) caused by the Squash vein yellowing virus (SqVYV). This virus is transmitted by the whitefly (Bemisia tabaci). In this research, the presence of this virus and others such as Papaya ringspot virus (PRSV), Zucchini yellow mosaic virus (ZYMV), Cucumber mosaic virus (CMV), Watermelon mosaic virus (WMV) was evaluated in seedlings germinated in three nurseries, in three watermelon producer farms, and surrounding weeds in watermelon and other cucurbit fields. The presence of Potyvirus was detected in the seedlings in one of the nurseries even though they did not show virus symptoms. The percentage of symptoms caused by viruses on the three farms was considerably different for each one. Regarding the weeds and other cucurbits, the virus that prevailed was PRSV. Additionally, at the Fortuna Experimental Station in Juana Díaz Puerto Rico, experiments were carried out in two different times where the incidence of the disease in a sowing (DBCA) of watermelon of the “Crimson Sweet” variety was evaluated. Different treatments were used to control the whitefly (Bemisia tabaci). Only the presence or absence of vectors was considered, and in both experiments the presence of Bemisia tabaci and Aphis gossypii was observed. The presence of SqVYV and other viruses such as PRSV was detected. As for the yield, it was higher in the second experiment compared to the first. These results demonstrate that it was possible to reach the harvest stage despite the presence of different viruses on the field.