Publications by authors named "Mauricio A Lolas"

The European hazelnut (Corylus avellana) is an important fruit crop cultivated in Chile, with over 17,000 ha planted (46%) in the Maule region, central Chile. During a routine orchard survey in seasons 2020-2021 and 2021-2022, in the Maule region, canker and dieback symptoms were observed in two commercial orchards of European hazelnut cv. Tonda Di Giffoni in San Rafael (8-year-olds) and Linares (15-year-olds), with an incidence between 10% and 36%, respectively, based on external symptoms.

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During the harvest of 2020 and 2021, sweet cherry (Prunus avium) fruit showed a firm rot with irregular pale to dark brown lesions on the fruit surface, with green to light brown fungal growth resembling Alternaria-like infection (Simmons, 2007). Diseased cherries (n= 80 fruit) were collected at harvest in mature (over 10-year-old) commercial orchards of cherry tree varieties Lapins, Regina, Santina, Skeena, and Sweetheart planted in four localities of the regions O´Higgins (33°59´ S, 70°42´W; San Francisco de Mostazal and Graneros) and Maule (35°00'S, 71°23´W; Curicó and Sagrada Familia), Central Chile. The incidence of black rot was 1.

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Article Synopsis
  • The English walnut (Juglans regia), cv. Chandler, is the most widely cultivated tree nut in Chile, with significant expansion in the Maule Region over the last five years.
  • During a 2019 survey, a concerning 45% to 65% of trees in two commercial orchards showed symptoms of branch and twig dieback.
  • Laboratory analysis of affected branches identified fungal isolates, morphologically likened to Dothiorella sp., which were confirmed using molecular methods involving specific primers.
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Apple (Malus × domestica) is an important fruit crop in Chile, with a cultivated area of 32,313 ha concentrated (63%) in Maule Region (35°25' S). Unusual core rot on 'Fuji' apples was observed at harvest in a commercial orchard in Curicó, Maule Region, with an incidence ranged between 22 to 35% in 2018 and 2019. Previously, in 2017, an incidence of 30% was estimated on 'Fuji' fruits destined to the Asian market.

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